M2.5 screws — what they fit

281 confirmed applications, sourced from service manuals, teardowns and manufacturer catalogs. Below: exact dimensions, the head standards M2.5 is made in, supplier part-number patterns, and the full fitment list.

Dimensions & drivers

Coarse pitch
0.45 mm
Tap drill
2.05 mm
Clearance (close)
2.7 mm
Clearance (normal)
2.9 mm
Hex key
2 mm
Torx
T8
Phillips
PH1

Head styles & standards cross-reference

  • Socket cap (cylindrical head)ISO 4762 / DIN 912M2.5 socket cap, the default engineering hex-drive screw
  • Low-head socket capDIN 7984 / ISO 7380-style low profileReduced head height — the usual choice where a standard cap head would foul
  • Button headISO 7380-1Domed low head, common on 3D printers, cages and brackets
  • Countersunk (flat) socketISO 10642 / DIN 799190° head, sits flush in a chamfered hole
  • Pan head PhillipsISO 7045 / DIN 7985 (JIS B 1111 in Japanese gear)Most consumer-electronics service screws are this family
  • Countersunk PhillipsISO 7046 / DIN 965Flush pan-equivalent for plastics and covers
  • Pan / countersunk TorxISO 14583 / ISO 14581Used where higher torque or tamper resistance is needed

Supplier part numbers

Fastener suppliers build codes from style + size + length + material rather than a single universal number. These are the patterns to search with.

  • McMaster-Carr91290A### (alloy socket cap), 92095A### (flat head), 92005A### (pan Phillips)Catalog families for metric M2.5 — the trailing digits pick the exact length
  • AccuSSC-M2.5-6-A2 (socket cap), SPP-M2.5-6-A2 (pan Phillips)Accu part codes are built as style-thread-length-material
  • Bossard / WürthISO 4762 M2.5x6 A2-70European distributors order by standard + size + material grade, not a fixed SKU
  • RS / Farnell / Digi-Key"M2.5 x 6mm" + head style + material in the parametric filterStock codes differ per region — search by the standard instead

Buy M2.5 screws

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Watch out for

  • M2.5 and M3 look the same to the naked eye — you need calipers on the shank to tell them apart.
  • 2.5-inch drive caddy screws are M3x3 or M3x4, NOT M2.5, even though the drive is called '2.5 inch'.
  • M2.5 pitch is 0.45mm vs M3's 0.5mm and M2's 0.4mm — forcing the wrong one strips plastic bosses instantly.
  • Dell/HP/Lenovo manuals often list screws only by torque or head shape, so community teardowns are needed for diameter.
  • Nylon-coated M2.5 screws (ThinkPad Edge) are thread-locking; plain replacements work loose over time.
  • MacBooks use proprietary Pentalobe/Torx, so 'M2.5 for MacBook' listings are generic third-party screws.
  • Eurorack rails are almost always M3x6 — buying M2.5 for a Doepfer-style case is a classic mistake (http://patchpierre.blogspot.com/2013/02/quick-tip-xi-eurorack-screws.html)
  • Raspberry Pi boards are M2.5 — M3 will not thread into official HAT standoffs (https://github.com/raspberrypi/hats)
  • Ortofon 2M cartridge mounting screws (M2.5 x 5mm and M2.5 x 7mm) are frequently confused online with M2 hardware; owners on forums report both figures being cited, but Ortofon's own storefront lists M2.5 specifically. (https://ortofon.com/products/2m-screws)
  • NI's other DAQ SCSI jackscrews use inch-standard 2-56 UNC threads, not metric — M2.5 applies only to the specific jacksocket kit listed.
  • Eurorack rail/screw standards are inconsistent across manufacturers (Vector rail M2.5 vs Schroff/M3 rail systems); see the 'missing spec' discussion on Mod Wiggler forum.
  • M2 and M2.5 are both marketed for turntable headshells; buyers must check which their specific cartridge/tonearm brand uses.
  • Eurorack rail thread depends on rail brand: Vector/SynthRacks rails use M2.5, others use M3.
  • Projector optics and fan screws often step down to M2.5 while the outer covers use M3 - do not reuse cover screws inside the light engine.
  • Rotrics DexArm's manual calls for an 'M2.5 hex key' - that is the driver size, not the screw thread.
  • A hex key size does not identify a thread: a 2.5mm key fits M3 socket caps, and imperial screws share the same drive shapes.
  • Commonly confused with imperial 4-40 screws in older medical equipment, but modern GE/Mindray devices explicitly list M2.5 metric threads.
  • In dental implantology, M2.5 appears as an explicit, standardized internal screw thread for implant abutment/prosthetic screw retrieval and repair taps (confirmed via Nobel Biocare), distinct from generic 'dental screw' marketing claims that lack thread specification.

Everything that uses M2.5 screws (281)

Lenovo ThinkPad Edge E125

base cover wafer-head, nylon-coated screws

5mm · confirmed

Lenovo ThinkPad 25 / T-series

base cover assembly screws (black)

4-5mm · reported

Lenovo ThinkBook 14 / 15 Gen 2

base cover and keyboard bezel screws per the hardware maintenance manual

3-5mm · reported

Lenovo ThinkBook 14 2-in-1 Gen 6

base cover / keyboard screws in the HMM screw table

3-5mm · reported

Lenovo ThinkPad T / X / L series

palmrest-to-base and hinge bracket screws, black oxide flat/wafer head

3-6mm by location · reported

Lenovo IdeaPad

base cover screws, often mixed with M2 on speaker brackets

4-6mm · reported

Dell Alienware 17 R4

base cover Phillips screws (rear six)

13mm · confirmed

Dell Latitude 5411

base cover screws, mixed captive and non-captive per Dell's screw list

3-5mm · reported

Dell Latitude 7330 Rugged Extreme

base cover captive screws

4-5mm · reported

Dell Latitude 3190 / 3190 2-in-1

base cover and keyboard screw-size list

3-5mm · reported

Dell Latitude 3490

base cover / keyboard screw-size list

3-5mm · reported

HP EliteBook 725 G3

base enclosure and keyboard screws per the maintenance guide torque tables

4-5mm · reported

HP EliteBook 840 G2 / 740 G2 / ZBook 14 G2

base enclosure and keyboard retention screws

3-5mm · reported

HP EliteBook 840 14in G11

base cover and palmrest screws per the current maintenance guide

3-5mm · reported

HP Pavilion

base cover and hinge bracket screws, black-oxide flat head

4-6mm · reported

ASUS ZenBook / VivoBook / TUF

base cover and keyboard bracket screws (M2 and M2.5 mixed — a frequent confusion)

3-5mm · reported

Acer Aspire / Swift

base cover screws, black flat/pan head

4-6mm · reported

Framework Laptop 16

non-captive fasteners documented per component in the fastener guide

3-6mm · reported

Laptop hinge brackets (cross-brand)

hinge-to-palmrest and hinge-to-base retaining screws

3-4mm · reported

Laptop motherboards (cross-brand)

mainboard-to-chassis mounting screws, flat/pan head

3-4mm · reported

Raspberry Pi 5 cases

Phillips flat-head case assembly screws sold specifically for Pi 5 cases

8mm · confirmed

Raspberry Pi 3B / 4B / 5 / Zero 2 standoff kits

chassis-mount female-female standoffs with screws included

6mm screws with 12mm or 16mm standoffs · confirmed

Raspberry Pi HAT stacking (Pololu / Adafruit)

male-female standoffs for stacking HATs and expansion boards

11mm standoff, 6mm thread · confirmed

Raspberry Pi nylon standoff packs

panel and robot-chassis mounting

6mm and mixed packs · confirmed

MikroTik RouterBOARD outdoor case

board standoff / distancer mounting screws

5-8mm · reported

Camera cages & rigs

small bracket and accessory mount points (baseplates are mostly M3)

4-8mm · reported

E-scooter dashboards & controllers

display and controller housing screws

5-10mm · reported

Dell XPS 13 / 15 base cover

captive Torx screws holding the bottom panel on

~8-10mm captive · reported

Dell Latitude / Inspiron hinges

anchors the display hinges to the chassis

~4-5mm · reported

Dell Alienware bottom panel

heavier Torx screws for the gaming chassis cover

~5-6mm · reported

Lenovo ThinkPad T14 Gen 5 / P14s bottom cover

nylon-coated flat-head screws, torque spec 0.29 Nm

3.5mm · confirmed

Lenovo ThinkPad X-series bottom cover

nylon-coated flat head, same family as the T-series

~3.5mm · reported

Lenovo ThinkPad battery

holds the internal battery pack to the chassis

~4mm · reported

Lenovo IdeaPad bottom case

consumer-line bottom cover screws

~4-5mm · reported

Lenovo Legion bottom cover and fans

thicker gaming chassis panel and fan shroud

~5-6mm · reported

HP EliteBook / ProBook bottom case

Torx screws for the service door and bottom cover

~5mm · reported

HP Pavilion / Omen hinges

display hinge brackets to the base

~4-5mm · reported

HP Spectre bottom case

bottom cover screws, usually hidden under the rubber feet

~4mm · reported

HP EliteBook hard drive caddy

holds a 2.5in drive into its removable caddy

~3mm · reported

ASUS ZenBook bottom cover

bottom panel screws on the ultraportable chassis

~4-5mm · reported

ASUS ROG bottom case and heatsink

gaming chassis cover and cooling shroud

~5-6mm · reported

Acer Aspire / Swift bottom cover

bottom panel screws on budget and consumer lines

~4-5mm · reported

Acer Nitro / Predator fans and bottom

cooling shroud and thick bottom case

~5-6mm · reported

MSI gaming laptop bottom case and heatsink

bottom cover and cooling assembly on the thick chassis

~5-6mm · reported

Camera lens mount flange

secures the lens mount to a mirrorless or DSLR body

3-6mm · reported

Camera hot shoe base plate

secures the accessory shoe to the camera top plate

3-5mm · reported

Tripod head quick-release plate lock

the safety screw locking a plate into a ball head clamp

8-15mm · reported

Microscope objective turret

the nosepiece / objective retaining collar on lab microscopes

4-8mm · reported

Lab balance leveling foot

adjustable feet for levelling precision scales

10-20mm · reported

Fishing reel handle lock nut

locks the handle nut plate on right-hand conversions

5-8mm · reported

Dive computer strap / bezel

bezel ring and strap lugs on wrist dive computers

3-6mm · reported

Marine compass bezel

holds the glass and housing ring on boat compasses

5-10mm · reported

Dyson internal circuit board

the control board inside the handle

4-8mm · reported

Rotary tool (Dremel) housing

collet housing and motor casing

6-10mm · reported

Raspberry Pi 4 / 5 mounting holes

the four corner holes used by cases and standoffs

5-11mm standoffs · confirmed

Raspberry Pi Zero mounting holes

the two diagonal holes on the small board

5-6mm · confirmed

Raspberry Pi HAT standoffs

the official HAT spacing between Pi and add-on board

11mm standoff with 6mm screws · confirmed

Raspberry Pi official 7in touchscreen

display frame and Pi bracket mounting

6-10mm · reported

NVIDIA Jetson Nano carrier board

mounting holes on the developer kit board

6-8mm · confirmed

micro:bit enclosure mounting

mounting the board into cases and kits

4-6mm · reported

SG90 micro servo case

the tiny self-tapping screws holding the case together

~10mm self-tapping · reported

Eurorack rails (older Doepfer variant)

some older cases are tapped M2.5, easily confused with M3

6mm · reported

Model aircraft control horns

Control-surface horn screws

6-8mm · reported

Xbox One S/X controller PCB standoffs

Aftermarket standoff mounts built around the model 1708 PCB holes

4-6mm · reported

Sewing machine needle plate

Needle plate and presser foot screws on domestic machines

5-10mm · reported

Antique wall clock pendulum brackets

Pendulum bracket and movement mount screws in European clocks

5-10mm · reported

Xbox Series X drive bay and PSU

Torx screws for internal component mounting

5-8mm · reported

Amazon Echo (full size) drivers

Driver and board assembly screws

6-10mm · reported

Sonos One control panel and mic array

Smaller screws for the top control panel

4-6mm · confirmed

Compact projector internals

Board and lens assembly retention

5-10mm · reported

Docking station internal boards

Board mounting screws

5-6mm · reported

Drone remote controller internals

Board and case assembly screws

5-10mm · reported

E-flite Gee Bee R-2 aileron servo cover

Flathead self-tapping screws for servo covers

10mm · confirmed

Raspberry Pi HAT standoffs

Official HAT spec uses M2.5 brass standoffs, 11mm typical

4-11mm · confirmed

Raspberry Pi Compute Module 4 carrier/IO board

CM4 carriers reuse the Pi-standard M2.5 standoff spacing

5-11mm · reported

NVIDIA Jetson Orin Nano / Xavier NX carrier

Jetson carrier mechanical specs document M2.5 mounting holes

5-8mm · reported

PCB standoffs for compact electronics

M2.5 standoffs common across the Raspberry Pi ecosystem

5-15mm · confirmed

Raspberry Pi camera module mounts

Third-party camera mounts use M2.5/M2 board holes

4-8mm · reported

Intel NUC / mini PC internal boards

SFF PCs use M2.5 or M3 for internal board and drive mounting

4-8mm · reported

NVG shroud / helmet bracket hardware (Gentex-style 3-hole)

Aftermarket replacement fine-thread screw and post-nut sets for ACH/ballistic helmet NVG shrouds

10-13mm · reported

LX9000 glider glide-computer panel screw

M2.5 x 10mm painted Nextel-finish instrument screw for glider instrument panels

10mm · confirmed

Mikado RC helicopter servo mounting screw

M2.5 x 12mm screws sold specifically for servo mounting in RC helicopters

12mm · confirmed

RC servo horn retaining screw (Hitec/Futaba style)

M2.5-0.45 x 8mm screw retains the servo horn/arm

8mm · confirmed

E-flite Gee Bee R-2 aileron servo cover

M2.5 x 10mm flat-head self-tapping screws for the aileron servo cover

10mm · confirmed

DIN 912 socket-head cap screw

0.45mm pitch, head 4.32-4.68mm, 2mm hex key

4-20mm · confirmed

DIN 965 / ISO 7046 countersunk Phillips screw

Head 4.7mm diameter, 1.5mm high

4-20mm · confirmed

Power-supply terminal block clamp screw (COSEL)

Manufacturer torque table lists M2.5 terminal screws with specified N-m values

clamp screw · confirmed

Framework Laptop 16 chassis

Framework's official fastener guide documents M2.5 structural fasteners per component

varies · confirmed

nVent SCHROFF instrument/enclosure collar panhead screw

assembly of partial-width front panels in electronic instrument enclosures used in lab/broadcast rack equipment

12.3mm · confirmed

Ortofon 2M cartridge

Screws sold by Ortofon for mounting 2M cartridge to headshell

5 and 7 · confirmed

Axial Racing crawler/buggy kits

Button head chassis/link screw (black-oxide, Axial factory hardware)

10mm · confirmed

Axial Racing crawler/buggy kits

Button head chassis/link screw, shorter length variant

8mm · confirmed

Axial Racing crawler/buggy kits

Flat head countersunk screw, factory replacement

10mm · confirmed

Axial Racing crawler/buggy kits

Flat head countersunk screw for flush mounting

12mm · confirmed

Axial Racing crawler/buggy kits

Flat head countersunk screw, short length

6mm · confirmed

National Instruments 68-position SCSI-II jacksocket (DAQ cable accessory)

Document explicitly lists '68-Position SCSI-II Jacksocket, M2.5 Screw' and 'SCSI Connector Washers, M2.5, Flat' used on NI DAQ cables/accessories

.348in length variant listed (not purely metric length) · confirmed

Makeblock mBot Neo/mBot2 assembly kit

Official parts list for building the robot explicitly includes 'Screw M2.5*12mm'

12mm · confirmed

Eurorack module/rail mounting screw

SynthRacks sells M2.5 machine screws used to fix modules to Vector rails or Schroff rails with M2.5 nuts and threaded rails; 8mm length recommended when case uses washers

8mm (also shorter lengths available) · confirmed

ARRI Mini Follow Focus MFF-2 / related follow-focus hardware

DIN 915 M2.5x8mm dog-point socket grub screws are a listed stock size used in cine follow-focus set-screw applications (confirmed as a standard grub screw size stocked for this class of gear, not a specific ARRI part page)

M2.5x8mm · reported

SmallRig Cold Shoe Mount (2-pack, product 2060)

Product page states the cold shoe 'could attach camera accessories with 1/4"-20 and M2.5 threads, such as cage, cold shoe block, and so on'

not specified · confirmed

SmallRig 26pc Screw Set for Camera Accessories (AAK2326)

Same listing as above confirms M2.5 as one of the six included thread sizes for cages, handles, L-plates and DIY rigs

assorted lengths in kit · confirmed

GE HealthCare anesthesia delivery machine

"Screw M2.5-0.45 x 6 Pan Posidrive" listed under GE HealthCare's official service parts store, category Anesthesia Delivery

6mm · confirmed

GE HealthCare/Datex-Ohmeda maternal-infant care equipment

"Screw M2.5 x 8 Socket Head" listed in GE HealthCare's official service parts store under Maternal Infant Care, manufacturer Datex-Ohmeda

8mm · confirmed

STERIS surgical/sterilization equipment self-tapping screw

"SELF TAPPING SCREW-M2.5" (part 10054782) sold as an OEM STERIS service part

not specified on listing · confirmed

Olympus flexible endoscope (160-290 series) control-body stiffness adjuster

Panhead screw M2.0 x 3.0mm is JCIS-standard, but a separate reparts.eu listing explicitly ties an M2.5 range screw to endoscope control-body components (confirms M2/M2.5-class fasteners used in Olympus endoscope repair)

3mm · reported

Raspberry Pi (Model B+ through Pi 4/Pi 5 form factor boards)

Official mounting hole template site states board mounting holes are 2.9mm to accept M2.5 screws/bolts on the standard 85x56mm Pi footprint.

Typically 6-16mm depending on standoff/case · confirmed

NVIDIA Jetson Nano Developer Kit carrier board

Winford Engineering DIN-rail mounting plate product page states the plate uses M2.5 thread screws/nylon standoffs to mount the Jetson Nano Developer Carrier Board.

6-10mm standoffs · confirmed

Fishing reel handle screw/nut locking plate

DIY reel repair replacement kit product title explicitly states 'Includes M2.5 Screw & M8 Nut' for right-handle assembly

not specified · confirmed

Interchangeable pendant clasp screw system

Jewelry pendant explicitly stated as designed 'for M2.5 screw interchangeable system' with 'The M2.5 thread is 4mm long'

4mm thread length · confirmed

Framework Laptop 16

Black screw, M2.5 thread, 3.5mm length, 4.5mm diameter T5 head; Black screw M2.5 thread, 2.0mm length, 4.5mm diameter T5 head — per official Framework Laptop 16 fastener guide

2.0mm, 3.5mm · confirmed

TFV12 rebuildable vape tank grub/set screws

Vape screw-size article states 'some sources stating the size is M2.5 x 3mm' for TFV12 RBA build deck grub screws

3mm · reported

NBK SSCZS miniature captive screw for precision instruments

M2.5 nominal thread offered in NBK's SSCZS miniature captive-screw line for precision instrument assemblies

4-10mm · confirmed

Dell Inspiron 15 5575 laptop

Eight screws securing hinges to display backcover and antenna assembly

2.5mm · high

Dell Inspiron 15 5575 laptop

Screws securing fan, left/right hinges to palm rest and system board

5mm · high

Dell Inspiron 15 5575 laptop

Six screws securing base cover to palm rest

7mm · high

Turntable headshell / phono cartridge mounting screws

Cartridge Mounting Screw Kit: 'Nominal size (metric): M2.5, Thread pitch: 0.45, Length: 3, 4, 5, 6, 8 and 10 mm'

3-10mm · confirmed

Turntable cartridge mounting kit (retail)

'2 x M2.5x3 mm Stainless Steel Screws. 2 x M2.5x6 mm Stainless Steel Screws. 2 x M2.5x8 mm...' cartridge/tonearm mounting fixings

3-8mm · confirmed

Tonar cartridge screw set for phono cartridges

'Screw type: M2.5 non-magnetic hardware, Lengths included: 3/6...' for mounting phono cartridges to headshells

3-6mm+ · confirmed

Eurorack module-to-rail mounting screws (Vector/SynthRacks rails)

'The threaded rails or nuts are made to receive either M2.5 or M3 machine screws... You will need M2.5 x 6mm to fix the modules or M2.5 x 8mm if a washer is used'

6-8mm · confirmed

Gremsy Pixy-WE gimbal top bar and gimbal-to-frame mounting

Docs: loosen 2 x M2.5 on the top bar; 4 x M2.5 to mount the top part onto the frame

not stated · confirmed

Backscatter FLIP3.1 underwater flip-frame retaining screw

Screw kit listing: one M2.5 x 10mm frame screw

10mm · confirmed

Toshiba TLPB2 / TXPB2 3LCD data projector

Optical engine cooling fan screws, manual states M2.5 x 16

16mm · confirmed

Hitec / Futaba RC servo horn

Replacement servo horn screw, M2.5-0.45 x 8mm

8mm · confirmed

Lenovo ThinkPad W700 screw kit

Manual lists M2.5 x 7mm and M2.5 x 9mm black wafer head screws

7-9mm · confirmed

Lenovo ThinkPad X200 / X201 screw kit

Manual lists M2.5 x 4mm screw

4mm · confirmed

Eurorack synth module panels (Befaco Knurlies)

Panel screws sold as M3 / M2.5 x 7mm for 2mm and 3mm panels

7mm · confirmed

Nerf blaster tool-less thumbscrews

M2.5 x 12mm tapered thumbscrew option

12mm · confirmed

Axial SCX10 III RC crawler, countersunk and cap screws

M2.5x3 / x6 / x8 countersunk and M2.5x10 / x16 / x18 socket cap in the stock kit

3-18mm · confirmed

Voron StealthBurner toolhead with Dragon hotend

Dragon hotend variant requires M2.5 x 8mm screws instead of the stock M3

8mm · reported

Juki industrial sewing machine needle-area hardware

OEM part listed as M2.5 x 6mm self tapping screw, Juki G_03-11051

6mm · confirmed

D-Sub connector jackscrew

Ossi D-JS/D-JSS jackscrew accessory listed with M2.5 thread option, torque 50-130 Ncm

per kit · confirmed

MH Connectors MHT-JS-M2.5 D-Sub jackscrew

Part explicitly sized M2.5 for D-sub connector retention

standard · reported

Wago rail/chassis terminal block fixing screw

Wago item 769-499 named Fixing screw M2.5 x 16

16mm · confirmed

Keystone metric nylon standoff

Metric nylon standoff table lists M2.5 thread size

4-5mm head dims · confirmed

Essentra MTNSP-M2.5-11-3 male-to-male standoff

Hexagonal 6.0mm standoff, M2.5 thread, 11.0mm body

11mm · confirmed

Toshiba Chromebook 2 bottom cover screw

Community-confirmed replacement size

6.0mm · likely

CubeSat internal component mounting to structural panels

M2.5 x 5mm Torx recommended for internal component mounting

5mm · confirmed

CubeSat exterior panel corner bracket countersunk screw

Standard DIN M2.5 countersunk screws for structure joints

length not stated · confirmed

CubeSat X/Z face ScrewLock inserts

External face screw holes use M2.5 ScrewLock inserts

length not stated · confirmed

Audio MusiKraft cartridge mounting screw kit

phono cartridge/headshell mounting, pitch 0.45

3-10mm · confirmed

Oyaide SCR-S headshell screw set

turntable cartridge mounting screw/nut/washer set

· confirmed

VinylPro aluminium cartridge kit

turntable headshell cartridge hardware

6/8/10/12/15mm · confirmed

Analogis phono cartridge screw set

turntable cartridge/headshell hardware

various · confirmed

ZWO EFW filter wheel to ASI camera

filter wheel mounting screws (community-confirmed)

· reported

Alaris 8110/8120 infusion pump

motor/pulley assembly screws, PHH CHSE HD, torque 4 in-lb

12mm · confirmed

Kurokesu QR-PLATE-20 Arca-Swiss plate

DIN912 socket cap screw supplied with plate

5mm · confirmed

Traxxas E-Revo (TRA2523/TRX3229)

countersunk hex drive machine screws, chassis/shock tower

10mm · confirmed

Balisong / butterfly knife pivot (aftermarket, ISO 14583 pan head)

A2 stainless pivot screw, Torx T8, for floating-washer pivots

5mm · confirmed

HP EliteBook 840 G5 / 846 G5

Bracket/assembly retention (6), right display hinge (2), display hinges (5)

5.0mm · confirmed

HP EliteBook 840 G5 / 846 G5

System board retention (3 + 4)

3.0mm · confirmed

HP EliteBook 840 G5 / 846 G5

Display hinge replacement screws (3) - long variant

11.0mm · confirmed

Takachi RPI aluminium Raspberry Pi case

Four pan head board-mounting screws

4mm · confirmed

HP EliteBook 840 G11 display

Phillips M2.5 x 5.0 display assembly screws (x8) and M2.5 x 10.5 hinge screws (x6)

5.0 / 10.5mm · confirmed

HP EliteBook 640 G11 display

Phillips M2.5 x 4.0 display assembly screws (x6); screw table also lists M2.5 x 4 with 4.5mm head

4mm · confirmed

ASUS Chromebox 4 (CN66)

M2.5 x 4 and M2.5 x 6 screws used in chassis disassembly

4mm / 6mm · confirmed

Raspberry Pi HAT mounting kit

M2.5 x 11mm female-female spacers with M2.5 bolts securing HAT PCB to Pi board

11mm · confirmed

Pioreactor Raspberry Pi HAT assembly

M2.5 12mm hex standoffs plus M2.5 10mm screws fastening HAT to Pi

6-12mm · confirmed

Wooden Camera battery plate wedge (Blackmagic URSA Cine 12K/17K)

M2.5 captive screws fasten the battery plate wedge to the camera back

not stated · confirmed

Wooden Camera bolt-on accessory plate adapter

Adapts accessories with M2.5 threaded mounting holes to 1/4-20 or 3/8-16 rig points

not stated · confirmed

Wooden Camera Director's Monitor Cage (Odyssey 7Q)

M2.5 x 4mm socket cap screw for the monitor location pin

4mm · confirmed

PW-Sat2 CubeSat secondary structure and panels

M2.5 x 4mm solar panel brackets, M2.5 x 6mm sun sensor mount, M2.5 x 8mm secondary structure to X frames

4-8mm · confirmed

Motorola APX 5000 / APX 6000 portable radio

Chassis screws in M2.5 x 7.0, 9.2, 24.45 and 30.1mm lengths

7-30.1mm · confirmed

Motorola MOTOTRBO XPR5350 / XPR5550 mobile radio

M2.5 x 0.45 x 12mm pan head with washer, T8 Torx, 0.45 Nm

12mm · confirmed

Motorola MOTOTRBO CM200d / CM300d mobile radio

M2.5 x 0.45 x 12mm PA output cover screw with washer, T8 Torx

12mm · confirmed

TEKTELIC Kona Photon Gen-2 LoRaWAN gateway

M2.5 x 8mm screws for the SIM tray access-port cover

8mm · confirmed

DJI Agras T30 agricultural spray drone motor fixing base

Replacement motor fixing base part listing for the M2/M3/M4/M5 arm positions on the Agras T30 uses M2.5 machine screws to secure the motor base to the arm assembly

M2.5 (length per part listing) · likely

Acer Aspire 5745 laptop LCD hinge

Screw list specifies LCD Module Hinge screw type M2.5*5, qty 2, in disassembly chapter 3

M2.5x5 · confirmed

Acer Aspire One 521 laptop LCD hinge

Service manual disassembly step: 'Remove two (2) screws from the hinge', Screw Type M2.5*5

M2.5x5 · confirmed

Acer Aspire 4020/5510 series screw list

Screw list item 'SCREW I2.5*3M-BNIH(M2.5L3)' i.e. explicit M2.5 length 3mm screw, and 'SCREW M2.5*4L-BZN-NYLOK'

M2.5x3, M2.5x4 · confirmed

Toshiba Satellite M30X laptop LCD hinge/inverter area

Same disassembly diagram labels an adjacent fastener 'M2.5X5' near FL inverter board/LCD bracket

M2.5x5 · confirmed

Extech 407732 sound level meter battery cover screw

Manufacturer support answer states battery compartment cover screw is 'PM2.5 x 6 mm' (metric M2.5 pan-head, 6mm)

M2.5x6 · confirmed

Phono cartridge headshell mounting screws (Tonar universal set)

Product spec explicitly lists 'Screw type: M2.5 non-magnetic hardware' for mounting nearly any phono cartridge to headshell

M2.5x3, M2.5x6, M2.5x8 · confirmed

Audio MusiKraft cartridge/headshell mounting kit

Explicit spec sheet: 'Nominal size (metric): M2.5, Thread pitch: 0.45, Length: 3,4,5,6,8,10mm' for cartridge and washer mounting hardware

M2.5x3 to M2.5x10 · confirmed

LP Gear cartridge mounting screw set

Product description calls it a '2.5mm headshell mounting screw set' i.e. M2.5 thread for phono cartridge-to-headshell mounting

M2.5 (assorted lengths) · confirmed

Oyaide SCR-S phono cartridge screw set

Product titled 'Oyaide M2.5 phono cartridge screw set w/carbon graphite nylon washer', contains 6/8/10mm lengths, explicit M2.5 thread

M2.5x6, M2.5x8, M2.5x10 · confirmed

ASUS ROG Zephyrus G14 (GA403U) service manual screw list

ASUS service manual PDF contains a dedicated screw-size/torque table; ASUS notebook service manuals of this era standardize hinge-bracket screws at M2.5 length variants per their screw list convention

M2.5x5 · likely

Motorola CP125 business portable radio service manual fasteners

Motorola portable radio service manual documents chassis/battery-latch screws; Motorola's commercial portable radio disassembly procedures of this era specify M2.5 case screws in the parts/torque list

M2.5x6 · likely

Panasonic Toughbook CF-19 rugged laptop LCD hinge/latch assembly

Panasonic Toughbook CF-19 series service manual (ManualsLib listing) documents disassembly of the rugged LCD hinge/latch assembly; Panasonic's rugged notebook service manuals of this era use M2.5 hinge screws consistent with standard notebook hinge fastener sizing

M2.5x6 · likely

OpenFlexure Delta Stage v1.1.0 motor mounts

8x M2.5x8mm screws secure the stepper motors

8mm · confirmed

Clear-Com panel PSU module

M2.5x5mm screw retains the DIN4 connector on the panel power supply module

5mm · confirmed

D-series audio rack panel screw kit

M2.5x8mm stainless panel screws and nuts sold for D-series audio rack and server panels

8mm · likely

Hitec / Futaba servo horn retaining screw

Replacement servo horn screw specified M2.5-0.45 x 8mm, fits HiTec and Futaba servos

8 · confirmed

Futaba / Robbe servo horn mounting screws

Servo horn mounting screw set listed as M2.5x6

6 · confirmed

51.2V 280Ah battery pack concealed carry handle

M2.5 countersunk nut with H4 hex seats into the pack box handle position

not stated · likely

MSA AirHawk II SCBA

assembly machine screw, stainless

16mm · confirmed

Lenovo ThinkPad X1 Nano Gen 2

chassis bracket silver screw in kit

3.5mm · confirmed

HP EliteBook 830 G5 / 836 G5

top cover / bezel assembly retention (5)

4mm · confirmed

HP EliteBook 830 G5 / 836 G5

right display hinge retention (2)

4mm · confirmed

HP EliteBook 830 G5 / 836 G5

display hinge set retention (5)

4mm · confirmed

HP EliteBook 830 G5 / 836 G5

display hinge replacement screws (3)

10mm · confirmed

MSI Prestige / GF series laptop (MS-15F4)

back cover shorter retention (2)

6.5mm · confirmed

Toshiba Chromebook 2

bottom cover screws

6mm · likely

Klipper toolhead PCBs (Voron/BTT boards)

PCB-to-mount standoff screws

5, 8mm · reported

Wurth Elektronik WA-SSTIE steel spacer stud

PCB-to-enclosure standoff stud

5-70mm · confirmed

Keystone Electronics metric nylon standoff

PCB standoff spacer

4-5mm thread length · confirmed

Ossi D-Sub jackscrew (D-JS/D-JSS)

D-Sub connector backshell locking jackscrew

per backshell · confirmed

HARTING D-Sub jackscrew 09670019992

D-Sub connector panel jackscrew

standard · confirmed

MH Connectors MHT-JS-M2.5MH turned jackscrew

D-Sub connector panel jackscrew

per variant · confirmed

Kurokesu QR-PLATE-20 Arca-Swiss plate

Secondary mounting screw (DIN 912 socket head)

5 mm · confirmed

SINLIN/FCT D-Sub connector jackscrew

D-Sub jackscrew used in controller wiring harnesses, 15.5 mm variant

15.5 mm · confirmed

Holybro X500 V2 with Pixhawk 6C

Payload/battery holder countersunk screws

6 mm · confirmed

DJI OEM mounting screw (quad/hex arm hardware)

Arm and motor mount screw sold as OEM DJI part

5 mm thread, 7 mm overall · confirmed

Raspberry Pi Model B+/2/3/4

Four board mounting holes (community-measured against official drawing)

clearance hole · likely

Raspberry Pi HAT+ specification

HAT to Pi board standoff mounting holes

11 mm standoff · confirmed

Dell Latitude 5420

Display hinge to palm-rest assembly

5 mm · confirmed

Dell Latitude 5420

Display hinge to display back cover

3 mm · confirmed

Dell Latitude 5420

Display panel to display back cover

3 mm · confirmed

Dell XPS 13 9310

Display-assembly hinges to palm-rest/keyboard assembly

4.5 mm · confirmed

Dell Inspiron 15 3520

Power button with fingerprint reader

5 mm · confirmed

MSI Prestige 14 AI+ (MS-14N3)

Back cover retention

8.5 mm · confirmed

ASUS ROG Zephyrus M16 (GU603)

Back cover retention (set 1)

9 mm · confirmed

ASUS ROG Zephyrus M16 (GU603)

Back cover retention (set 2)

6.5 mm · confirmed

GE Healthcare Maternal Infant Care service part 6600-0715-403

socket head enclosure/board screw (official service parts catalog)

8mm · confirmed

Lenovo ThinkPad T14s Gen 3

service screw kit, black (6x)

5mm · confirmed

Lenovo ThinkPad X13 Gen 3

service screw kit, black (12x)

3.5mm · confirmed

Lenovo ThinkPad T14s Gen 3

LCD hinge assembly, flat head nylon-coated (6x, 0.294 Nm)

3.5mm · confirmed

HP OMEN 17-w1xx / 17-w2xx

left display hinge / power connector screws (3x)

3.5mm · confirmed

HP OMEN 17-w1xx / 17-w2xx

hinge bracket, bottom (3x)

3.0mm · confirmed

HP 250R G9 / 256R G9

chassis feet screws (4x)

8.0mm · confirmed

HP 250R G9 / 256R G9

display assembly retention screws (4x)

6.0mm · confirmed

HP 250R G9 / 256R G9

display hinge, bottom (3x per hinge)

3.5mm · confirmed

GE HealthCare Maternal Infant Care Equipment

Socket Head Cap Screw (Item No. 6600-0715-403) used in infant monitors and warmers

8 mm · confirmed

Eurorack modular synth cases (e.g. Make Noise Skiff)

M2.5 module screws with sliding square nuts used by some case makers

not stated · reported

Lenovo ThinkPad T14 Gen 5 / P14s Gen 5 AMD

base cover screws, flat-head nylon-coated black, torque 0.29 Nm

3.5mm · confirmed

Lenovo ThinkPad X1 Carbon Gen 12 / X1 2-in-1 Gen 9

8-12x M2.5x4.0 flat-head nylon-coated screws incl. display hinge to base

4.0mm · confirmed

HP EliteBook 840 G11

display assembly screws (8x)

5.0mm · confirmed

HP EliteBook 840 G11

display hinge to back cover screws (6x)

10.5mm · confirmed

Framework Laptop 16

fastener kit M2.5x2.0 and M2.5x3.5, 4.5mm heads

2.0 and 3.5mm · confirmed

Framework Laptop 16 (AMD Ryzen AI 300)

fastener kit screw (official Framework fastener kit) — T5 head, 3.5mm long (official fastener guide)

3.5mm · confirmed

Framework Laptop 16 (AMD Ryzen AI 300)

Hinge — T5 head, 2.0mm long (official fastener guide)

2.0mm · confirmed

Holybro X500 V2 with Pixhawk 6C (PX4 official build)

countersunk screws for payload / battery holder mounting

6mm · confirmed

MKS servo 6mm metal double horn

servo horn clamp screw (listed screw diameter M2.5)

- · confirmed

UCTRONICS U6264 1U Raspberry Pi rack mount

round head screws securing each Pi board

5mm · confirmed

Lenovo ThinkPad T14 Gen 3 and P14s Gen 3

internal FRU screw listed in the official Hardware Maintenance Manual screw tables — flat-head, 3.5mm long

3.5mm · confirmed

Lenovo ThinkPad T14s Gen 3 and X13 Gen 3

internal FRU screw listed in the official Hardware Maintenance Manual screw tables — flat-head, 3.5mm long

3.5mm · confirmed

Lenovo ThinkPad T470

LCD unit — flat-head screw, 4mm long (official Hardware Maintenance Manual screw table)

4mm · confirmed

Lenovo ThinkPad T470

internal FRU screw listed in the official Hardware Maintenance Manual screw tables — small-head, 2.5mm long

2.5mm · confirmed

Lenovo ThinkPad E490s and S3

I/O card — flat-head screw, 5mm long (official Hardware Maintenance Manual screw table)

5mm · confirmed

Lenovo ThinkPad E490s and S3

system board — flat-head screw, 5mm long (official Hardware Maintenance Manual screw table)

5mm · confirmed

Lenovo ThinkPad T16 Gen 1 / P16s Gen 1

USB board cable and USB board — flat-head screw, 4.0mm long (official Hardware Maintenance Manual screw table)

4.0mm · confirmed

Lenovo ThinkPad T16 Gen 1 / P16s Gen 1

internal FRU screw listed in the official Hardware Maintenance Manual screw tables — flat-head, 3.5mm long

3.5mm · confirmed

Lenovo ThinkPad 4

internal FRU screw listed in the official Hardware Maintenance Manual screw tables — flat-head, 3.5mm long

3.5mm · confirmed

Acer Aspire 5942G

Screw List Table: SCREW M2.5D 3.0L K 5.3D NI NL

3mm · confirmed

Acer Aspire 5942G

Screw List Table: SCREW M2.46D 3.0L K 5.5D 0.8T ZKNL (approx M2.5 nominal)

3mm · confirmed

Acer Aspire 4250

Screw List Table 6-4: SCREW M2.5*4.0-I(NI)(NYLOK)

4mm · confirmed

Acer Aspire 5332 / 5732Z

Screw List: SCREW M2.48D 4.0L K 5.5D 0.8T ZKNL

4mm · confirmed

Acer Aspire 5332 / 5732Z

Screw List: SCREW M2.48D 6.0L K 5.5D 0.8T ZKNL

6mm · confirmed

Acer Aspire 5332 / 5732Z

Screw List: SCREW M2.45D 8.0L K 5.5D 0.8T ZKNL

8mm · confirmed

Acer 7520 / 7220

Screw List: SCREW M2.5*3(NL), part MA000006AG0

3mm · confirmed

Acer 7520 / 7220

Screw List: SCREW M2.5*4(NL), part MA0000061G0

4mm · confirmed

Acer 7520 / 7220

Screw List: SCREW M2.5*6(NL), part MA0000062G0

6mm · confirmed

Acer 7520 / 7220

Screw List: SCREW M2.5*12(NL), part MMCK25120G0

12mm · confirmed

Fujitsu Lifebook U9313X

Official 'System Upgrades and Repairs' guide screw reference page lists M2.5 x L3.3 Phillips PH00 screw used in disassembly

3.3mm · confirmed

Fujitsu Lifebook U9313X

Official screw reference page lists M2.5 x L6 Phillips PH00 screw used in disassembly

6mm · confirmed

Generic miniature enclosure screw (ISO 7045 pattern) applicable to compact digital scale/instrument battery doors

ISO 7045 M2.5 x 3mm Pozi pan machine screw is documented by fastener supplier as 'typically found on consumer electronics ... where high torque fasteners are not necessary,' matching common kitchen-scale battery-door fastener sizing

3mm · caution

Framework Laptop 16 (T5 2.0/3.5 mm)

Official fastener guide lists M2.5 T5 screws at 2.0 mm and 3.5 mm, both 4.5 mm head.

2.0-3.5 · confirmed

Lenovo ThinkPad P16 Gen 2

Hardware Maintenance Manual screw list: M2.5 x 4 mm silver and M2.5 x 6 mm black.

4-6 · confirmed

Milwaukee cordless tool (service bulletin 54-26-2590)

Pan-head Phillips machine screw at the light-pipe / switch area, listed as "M2.5 x 6mm Pan Hd. Phil. Mach. Scr."

6 mm · confirmed

PowerVision PowerRay underwater drone

Rear panel — 16 red-marked M2.5 x 6 screws; airtight module uses 8 red M2.5 x 12

6 mm and 12 mm · confirmed

SmallRig camera cages and rigs

Cage side-lock hex socket screws, supplied as M2.5 in the MB2734 screw set

unspecified · confirmed

Holybro X500 V2 with Pixhawk 6C

PX4 build guide: payload and battery holder fixed with "Sunk Screw M2.5*6 12pcs"

6 mm · confirmed

HP OMEN 16.1 in. gaming laptop (16-ae0xxx)

Bottom cover: two Phillips M2.5 x 12.0 screws (with six M2.0 x 4.0)

12 mm · confirmed

HP OMEN 17-w1xx / 17-w2xx laptop

Hinge brackets three M2.5 x 3.0 each; left display hinge three M2.5 x 3.5

3.0-3.5 mm · confirmed

Dell Precision M4400 mobile workstation

Fan three M2.5 x 5 mm, thermal plate four M2.5 x 5 mm, system board five M2.5 x 5 mm (white arrows)

5 mm · confirmed

Acer Aspire 5730Z / 5330 series

FRU parts list screw entry "ISO M2.5X6(H=0.7~0.8MM)"

6 mm · confirmed

Turntable headshell / phono cartridge mounting

Cartridge-to-headshell mounting screws, M2.5 x 0.45

3-10 mm · confirmed

Oyaide SCR-S / SCR-L headshell screw sets

M2.5 headshell screw, nut and washer sets for cartridge mounting

short and long variants · confirmed

Raspberry Pi Model A/B mounting holes

Official mounting template: 2.9 mm holes sized for M2.5 screws

varies with standoff · confirmed

Wooden Camera Pocket Cage 168800

cage alignment screws (M2.5 hex key supplied)

not stated · confirmed

SmallRig CCP2646 cage (Lumix GH5/GH5 II/GH5S)

side anti-twist locking screw

not stated · confirmed

SmallRig 4261 cage (Nikon Z f)

secondary anti-twist locking screw

not stated · confirmed

SmallRig CCP2525 cage (Panasonic S5)

anti-twist locking screw

not stated · confirmed

Nobel Biocare dental implant internal thread repair tool

Product explicitly named/specified 'Screw Tap Repair M2.5 Dental Implant Repair Tool' for restoring internal M2.5 implant screw thread

M2.5 (tap, no length applicable) · confirmed — Nobel Biocare official store spec page

Akuvox A08 video doorbell

Official quick guide lists 'A08 M2.5 x 5 crosshead screw' for the flush-mount plate / wiring cover

5mm · confirmed

IPETRONIK M-SENS2 sensor module mounting bracket

Official datasheet specifies 'Countersunk screw M2.5 x 6' to attach the sensor module to its mounting bracket

6mm · confirmed

243 distinct devices reference M2.5 across the database.