M2.5 x 8mm screws — what they fit & where to buy

63 sourced applications in this database list a M2.5 screw at 8 mm (or a length range that includes it), most of them in drones, rc & gimbals. A M2.5 x 8mm screw has a 0.45 mm coarse pitch, so a fully engaged 8 mm shank gives about 17.8 thread turns (3.2× the diameter).

Buy M2.5 x 8mm screws

TechSpareWarehouse stocks 14 M2.5 x 8mm listings (black, Phillips flat/low-profile head), most named for the exact device they fit.

On eBay: Universal PC Laptop Bottom Chassis Replacement Screws M2.5x8mm 8-Pack

Search tip: stores list these as “M2.5 x 8mm screw”. Check the thread and length against your old screw before ordering.

Disclosure: TechSpareWarehouse is our own parts store — we earn from these sales. As an Amazon Associate we also earn from qualifying purchases. Fitment data on this site is not changed by what we stock.

M2.5 x 8mm specs

Thread
M2.5 × 0.45
Length
8 mm
Thread turns
≈ 17.8
Length ÷ diameter
3.2×
Tap drill
2.05 mm
Clearance (close)
2.7 mm
Phillips
PH1
Torx / hex
T8 / 2 mm

Length is measured from under the head for pan, wafer and button heads, and overall for flat (countersunk) heads. Neighbouring sizes we track: M2.5 x 6 mm (87 applications).Going 0.5 mm too long can bottom out in a blind boss or touch a board underneath.

Where M2.5 x 8mm screws are used

  • Drones, RC & Gimbals10
  • Vehicles, Marine & Mobility9
  • 3D Printing, CNC & Robotics8
  • Displays, TVs & Mounts7
  • Electronics, Racks & Enclosures7
  • Cameras & Optics5
  • Laptops & PCs5
  • Standards & References3

More M2.5 x 8mm listings named for specific devices

Devices that use M2.5 x 8mm screws (63)

Raspberry Pi 5 cases

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

8mm · confirmed · source

MikroTik RouterBOARD outdoor case

board standoff / distancer mounting screws

5-8mm · reported · source

Camera cages & rigs

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

4-8mm · reported · source

E-scooter dashboards & controllers

display and controller housing screws

5-10mm · reported · source

Dell XPS 13 / 15 base cover

captive Torx screws holding the bottom panel on

~8-10mm captive · reported · source

Tripod head quick-release plate lock

the safety screw locking a plate into a ball head clamp

8-15mm · reported · source

Microscope objective turret

the nosepiece / objective retaining collar on lab microscopes

4-8mm · reported · source

Fishing reel handle lock nut

locks the handle nut plate on right-hand conversions

5-8mm · reported · source

Marine compass bezel

holds the glass and housing ring on boat compasses

5-10mm · reported · source

Dyson internal circuit board

the control board inside the handle

4-8mm · reported · source

Rotary tool (Dremel) housing

collet housing and motor casing

6-10mm · reported · source

Raspberry Pi 4 / 5 mounting holes

the four corner holes used by cases and standoffs

5-11mm standoffs · confirmed · source

Raspberry Pi official 7in touchscreen

display frame and Pi bracket mounting

6-10mm · reported · source

NVIDIA Jetson Nano carrier board

mounting holes on the developer kit board

6-8mm · confirmed · source

Model aircraft control horns

Control-surface horn screws

6-8mm · 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 · source

Amazon Echo (full size) drivers

Driver and board assembly screws

6-10mm · reported · source

Compact projector internals

Board and lens assembly retention

5-10mm · reported · source

Drone remote controller internals

Board and case assembly screws

5-10mm · reported · source

Raspberry Pi HAT standoffs

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

4-11mm · confirmed · source

Raspberry Pi Compute Module 4 carrier/IO board

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

5-11mm · reported · source

NVIDIA Jetson Orin Nano / Xavier NX carrier

Jetson carrier mechanical specs document M2.5 mounting holes

5-8mm · reported · source

PCB standoffs for compact electronics

M2.5 standoffs common across the Raspberry Pi ecosystem

5-15mm · confirmed · source

Raspberry Pi camera module mounts

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

4-8mm · reported · source

Intel NUC / mini PC internal boards

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

4-8mm · reported · source

RC servo horn retaining screw (Hitec/Futaba style)

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

8mm · confirmed · source

DIN 912 socket-head cap screw

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

4-20mm · confirmed · source

DIN 965 / ISO 7046 countersunk Phillips screw

Head 4.7mm diameter, 1.5mm high

4-20mm · confirmed · source

Axial Racing crawler/buggy kits

Button head chassis/link screw, shorter length variant

8mm · confirmed · source

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 · source

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 · source

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 · source

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 · source

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 · source

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 · source

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 · source

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 · source

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 · source

Hitec / Futaba RC servo horn

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

8mm · confirmed · source

Lenovo ThinkPad W700 screw kit

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

7-9mm · confirmed · source

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 · source

Voron StealthBurner toolhead with Dragon hotend

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

8mm · reported · source

Audio MusiKraft cartridge mounting screw kit

phono cartridge/headshell mounting, pitch 0.45

3-10mm · confirmed · source

VinylPro aluminium cartridge kit

turntable headshell cartridge hardware

6/8/10/12/15mm · confirmed · source

Pioreactor Raspberry Pi HAT assembly

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

6-12mm · confirmed · source

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 · source

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 · source

TEKTELIC Kona Photon Gen-2 LoRaWAN gateway

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

8mm · confirmed · source

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 · source

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 · source

OpenFlexure Delta Stage v1.1.0 motor mounts

8x M2.5x8mm screws secure the stepper motors

8mm · confirmed · source

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 · source

Hitec / Futaba servo horn retaining screw

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

8 · confirmed · source

Klipper toolhead PCBs (Voron/BTT boards)

PCB-to-mount standoff screws

5, 8mm · reported · Source: Voron StealthBurner Assembly Manual toolhead PCB section

Wurth Elektronik WA-SSTIE steel spacer stud

PCB-to-enclosure standoff stud

5-70mm · confirmed · Source: we-online.com spacer studs page

Wurth Elektronik WA-SPAIE plastic spacer stud

plastic PCB standoff stud

5-65mm · confirmed · Source: we-online.com spacer studs page

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

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

8mm · confirmed · source

HP 250R G9 / 256R G9

chassis feet screws (4x)

8.0mm · confirmed · source

GE HealthCare Maternal Infant Care Equipment

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

8 mm · confirmed · source

Acer Aspire 5332 / 5732Z

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

8mm · confirmed · source

Turntable headshell / phono cartridge mounting

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

3-10 mm · confirmed · source