screwfitmentdatabase

Cameras & Optics screw sizes

278 items with confirmed screw specs.

1.25" eyepiece/diagonal/SCT visual back thumb screwM3Replacement M3-0.5mm thread pitch set/thumb screws explicitly sold for 1.25" diagonal eyepiece and SCT visual back thumbscrews, and some finder/guide scope shoesAimpoint Comp M4 / M4s LRP & TNP mountM5Aimpoint OEM spare part: Screw M5 x 15, 2 pieces, for Comp M4 / M4s mount.Aimpoint Micro T-1/T-2/H-1/H-2 standard mountM3M3x4 mount screws for Micro series sightsAimpoint Micro T-1/T-2/H-1/H-2 standard mount screwM3Official Aimpoint spare part 11866, M3x4 screwsAimpoint SM-2001/2007 Micro T1/T2 mountM3Mount manual: five M3 x 6 Torx T10 screws attach the sight to the mount.Airsoft red dot sight mounting screw set (Laylax/Quintes Sence)M3'M3 Flat Head Screw Set... Includes a set of 2 each: M3x7.5 / M3x8 / M3x8.5 / M3x9 / M3x10, Design for Fitting Various Optics Securely'Airsoft/firearm red-dot sight optic mounting screws (Vortex Viper, Swampfox patterns)M3Mounting instruction sheet: 'Sight Manufacturer: Swampfox / Vortex Viper... Screws Used: M3 x 8', torque to 12 in/lbAlpine and touring ski bindings (Binding Freedom inserts)M5Binding Freedom Pozi low-head M5 binding mounting screwsArca-style quick-release plateM3secures the plate to a camera baseplateARRI plate for Sony VENICE 1/2M4M4 threads for right/left side brackets on the camera plateArtesky 340mm Vixen Dovetail BarM6threaded mounting holes for camera/telescope attachment on Vixen dovetailAstromania finder scope dovetail baseM4Dovetail mounting base uses two M4 screws for red dot / optical finderscope attachmentATC (Advanced Transportation Controller) traffic signal cabinet standardM4City of Suffolk ATC Traffic Signal Controller Cabinet standard specification explicitly calls for M4 fasteners on the load switch and terminal facility mounting panels within the cabinetAV equipment rack cage-nut kitM6M6x16mm lens-head screws with cage nuts for square-hole rack railsBasler ace 2 / racer 2 SM3M3 mounting screws, tightened in the documented order to keep optical alignment.Basler ace 2 / racer 2 S camera body mounting screwsM3Official mounting instructions include a 'Tightening the M3 screws' sequence; length not statedBasler ace 2 / racer 2 S industrial camerasM3M3 body mounting screws with a specified tightening sequenceBasler ace 2 industrial camera housingsM2some housing variants additionally use M2 mounting screwsBasler ace classic industrial cameraM2camera-body mounting hole pattern for tripod adapterBasler ace Classic/U USB 3.0M2M2 mounting screws on the camera housing (order of tightening depends on screw size).Basler ace L USB 3.0M3M3 mounting screws of different lengths depending on model.Basler dart M industrial camera mount kitM2Manufacturer datasheet explicitly specifies the M-mount attachment nut kit as 4x M2 stainless steel hex nutsBasler dart M screw kit (order no. 2200002092)M24x M2 hex nuts for lens mount attachmentBinocular hinge / bridgeM1.4the central hinge that sets eye spacingBosch MicroDome 200 Series cameras (NDC-274/284 series)M3camera and base unit mounting to ceiling or surface, 2.5mm pilot holesBurris Fast Fire 3 optic mounting screwM3M3 x 0.5 x 7mmCamera cage accessory armsM5auxiliary mounting points distinct from the 1/4-20 camera threadCamera cage shells (SmallRig-style)M3internal cage assembly screws — the tripod-facing ports are 1/4-20, not M3Camera cages & rigsM2.5small bracket and accessory mount points (baseplates are mostly M3)Camera hot shoe base plateM2.5secures the accessory shoe to the camera top plateCamera lens assembliesM1.6lens barrel and aperture ring retaining screwsCamera lens focus ring set screwM2grub screw locking the focus or zoom collar to the barrelCamera lens grub/set screws (rangefinder & vintage lens mounts)M1.2Grub set screw M1.2 x 2mm and M1.2 x 3mm cone point, sold by camera-repair specialist for lens mount/helicoid set screwsCamera lens mount flangeM2.5secures the lens mount to a mirrorless or DSLR bodyCamera lens/body low-profile 'JIS Micro Profile' fastenerM1.4Polar Bear Camera lists 'JIS Micro Profile Screw M1.4 x 4mm' used in camera bodies and lenses to hold together top/bottom coversCaptive pan-head miniature screw for precision instruments (NBK SSCZS series)M1.4Manufacturer part number 'SSCZS-M1.4' explicitly encodes the M1.4 thread; product family described as 'Pan head captive machine screws for precision instruments (miniature screws)' — a generic fastener aimed at compact instrument/medical-device housings, not a named consumer device.Celestron 1.25" 2x Ultima Barlow 'shorty' set screwM3Screw-size database lists this Barlow's thumb/set screw explicitly as M3-0.5Celestron 1.25" 2x Ultima Barlow ('shorty', 1999) retaining screwM3Database entry: 'Celestron 1.25" 2x Ultima Barlow "shorty," 1999 (1) M3-.5'Celestron 1.25in Ultima Barlow (1999)M3locking/retaining screw, M3-0.5Celestron C11 Schmidt-Cassegrain OTA secondary mirror collimation screwsM3Official Celestron reference lists M3 x 0.5, 12mm collimation screws for the C11 tube.Celestron C14 Schmidt-Cassegrain OTA secondary mirror collimation screwsM3Official Celestron reference lists M3 x 0.5, 18mm collimation screws for the C14 tube.Celestron C6 Schmidt-Cassegrain OTA secondary mirror collimation screwsM3Official Celestron reference lists M3 x 0.5, 10mm collimation screws for the C6 tube.Celestron C8 Schmidt-Cassegrain OTA secondary mirror collimation screwsM3Official Celestron reference lists M3 x 0.5, 8mm collimation screws for the C8 tube.Celestron C9.25 Schmidt-Cassegrain OTA secondary mirror collimation screwsM3Official Celestron reference lists M3 x 0.5, 10mm collimation screws for the C9.25 tube.Celestron collimation screws, C5/C6/C8 SCT optical tubesM3secondary mirror collimation screws, thread spec M3 x 0.5Celestron collimation screws, C8/C9.25/C11 SCT optical tubesM4secondary mirror collimation screws on Schmidt-Cassegrain optical tubesCelestron EdgeHD 11" OTA secondary mirror collimation screwsM3Official Celestron reference lists M3 x 0.5, 12mm collimation screws for the 11" EdgeHD tube.Celestron EdgeHD 14" OTA secondary mirror collimation screwsM3Official Celestron reference lists M3 x 0.5, 18mm collimation screws for the 14" EdgeHD tube.Celestron EdgeHD 8" OTA secondary mirror collimation screwsM3Official Celestron reference lists M3 x 0.5, 12mm collimation screws for the 8" EdgeHD tube.Celestron EdgeHD 9.25" OTA secondary mirror collimation screwsM3Official Celestron reference lists M3 x 0.5, 10mm collimation screws for the 9.25" EdgeHD tube.Celestron NexStar 8 eyepiece holderM4eyepiece holder thumb screw, M4-0.7 round tipCelestron NexStar 8 eyepiece holder set screwM4M4 x 0.7 x 12mm stainless round-tip set screw per ScopeStuff size databaseCelestron NexStar 8 eyepiece holder set screwsM4Crowdsourced screw-size database explicitly lists the Celestron NexStar 8 eyepiece holder thread as M4-0.7 x 12mm stainless steel round-tipChristie HS / Jazz Series UST lens bracketM4Socket-head screws with spring and flat washers fasten the lens fixture to the bracketChristie HS / Jazz Series UST lens supportM6Roll-angle fine adjustment screw turned with a hex wrenchCinema camera cheese plates & cagesM6auxiliary accessory thread alongside 1/4-20 and 3/8-16Cognex In-Sight 9000 machine vision systemM4housing mounting screws — max insertion 8mm rear, 3mm near lens, 4.5mm near connectorsCompact & action camerasM1.4lens ring and small housing retention screwsDashcam / action-cam suction mount ball jointM4Mount ball joint locked by an M4 grub screw; the 1/4"-20 is the separate camera threadDiscovery DHQ 8" dob 1.25" rack-and-pinion focuser eyepiece screwM4ScopeStuff database: 'Discovery DHQ 8" dob 1.25" rack and pinion focuser eyepiece screw (2) = M4'DJI Mavic Pro gimbal/camera mounting screwsM2iFixit repair guide for gimbal/camera replacement documents multiple small screw sizes; DJI Mavic Pro gimbal frame screws are commonly specified in third-party screw kits as M1.4/M2 metric fasteners for the yaw/roll/pitch armsDJI Mini 2 gimbal camera arm screwsM1.4iFixit teardown guide for gimbal camera replacement on DJI Mini 2 involves multiple very small fasteners; DJI's published spare-part gimbal arm screws for Mini-series drones are catalogued at M1.4 metric thread by third-party parts suppliersDJI O3 Air Unit camera moduleM220 x 21.2mm camera module mounts with M2 screwsDJI Ronin 4D 6KM2OEM M2x4 screw sold as an individual gimbal/camera repair partDJI RS 5 / RS 4 / RS 3 / RSC 2 gimbal camera mountM4DJI RS Screw Kit lists four M4 x 10 mm screws for mounting a camera to the gimbal cradleDJI RS gimbal accessory screws (RS2/RS3/RS4/RS5)M4Official DJI RS Screw Kit includes four M4 x 10mm screws for axis-arm and accessory mounting (camera plate itself is 1/4-20)DJI RS series gimbals (RS 5, RS4 Pro, RS4, RS3 Mini/Pro/3, RS2, RSC2)M4DJI RS Screw Kit (official DJI Store part) includes four M4 screws, 10mm long, plus 1/4"-20 D-ring camera screwsDJI RS upper quick-release plateM4Plate carries both 1/4-20 and M4 threads for baseplate accessoriesDSLR & mirrorless camerasM1.2button, mode-dial and control-plate retaining screwsEchoMaster PCAM-JP3 spare-tire mount cameraM3 / M6camera body to mounting plate (2, with lock washers)Edmund Optics 30mm Universal Cage PlateM3through-holes for mounting to 30mm cage rod system, tapped M3 x 0.5, 3x/8x/4x hole patternsEdmund Optics metric post holdersM6Metric post holder line uses an M6 x 1 base thread; 50.8mm holder stock 58-972Edmund Optics metric post kitM4Post kit supplied with an M4 mounting studEM-Tec SEM sample holder screw setM1.6M1.6 x 4mm and M1.6 x 6mm socket cap screws for electron-microscope stage insertsExplore Scientific / Meade style finder shoeM4mounting slots take M4 (or imperial 8-32)Eyeglass eyewire/rim screw (Tabco SM411)M1.6slotted rim screw holding lens in frame, 2.0mm headEyeglass frame hinge/temple screws (industry standard)M1.2M1.2 thread, 2.0mm head, 8.7mm length small-head Phillips optical screw stocked as a standard eyewear repair sizeEyeglass frame screw (largest ISO spectacle size)M2heavy-duty rimless mountsEyeglass hinge / eyewire screwM1.2 / M1.4hinge barrel and rim tension on plastic framesEyeglass hinge screw (heavier frames)M1.6thick acetate and rimless frame hinges, per ISO 11381Eyeglass hinge screw (the most common size)M1.4standard hinge screw on most metal and plastic framesEyeglass spring hinge barrelM1.4holds the spring-loaded hinge on flexible templesEyeglasses/optical hinge screws (also used in miniature electronics)M1.2Tabco Optical catalog lists Phillips small-head screw, thread M1.2 (1.2mm), 2.0mm head, 8.7mm length, stainless steelEyewire/optical and precision-instrument screws (representative of hearing aid / camera size class)M1.4Tabco Optical catalog lists numerous Phillips M1.4 (1.4mm) thread screws with 2.0mm head diameter and lengths from 3.5mm to 6.8mm, stainless steel, used in eyewire/precision assembliesFPV camera lens mountsM1.2micro board-camera lens retaining screwsFPV camera mounts (Caddx and similar)M2M2 hex screws are the standard FPV camera mounting fastenerGeissele Super Precision Optic Mount for Aimpoint CompM4M4optic retaining screws, tightened with 4mm hex keyGeneral eyewear/smart-glasses hinge and temple screwsM1.4 / M1.6Eyeglass repair screw kits explicitly cover M1, M1.2, M1.4 and M1.6 metric threads used in standard spectacle-style hinges, the same hinge platform used by camera smart glasses (e.g., Ray-Ban Meta style frames)Gimbal / quick-release plate clampM3secures the camera plate in a gimbal or cage clampGimbal stabilizer arm clampM4secures the camera plate onto the gimbal handle armGlock Gen6 optic-ready slideM4Slide has two tapped hole pairs: 6-32 and M4 x 0.7 for red dot mountingGlock MOS adapter plate to slide (Docter/Meopta/Insight/Vortex/Burris footprint)M3Official Glock MOS adapter sheet lists M3 for this adapter groupGlock MOS adapter plate to slide (Leupold/Eotech footprint)M4Official Glock sheet lists M4 for this adapter groupGlock MOS cover plate screwM3M3 x 0.5 x 8mmGlock MOS optic-to-plate mounting screwM3M3 x 0.5 x 6mm TorxGoPro (all standard mounts, Hero series)M5GoPro thumb screw for mount/fold-clip attachment; length ranges 18.5-19mmGoPro HERO action camera mounting thumb screwM5Standard GoPro thumb screw thread size is stated as M5, used across GoPro HERO mount bucklesGoPro HERO action-camera mount thumbscrew/buckle systemM5Independent screw-size research and forum measurement both state the GoPro mount thumbscrew is 'M5 bolt x 0.8' thread, used in the standard two-prong GoPro buckle mountGoPro HERO mount thumbscrewM5Standard GoPro mounting thumbscrew is M5 x 0.8 (metric equivalent of 10-32); aftermarket thumbscrews sold at this sizeGoPro mount thumbscrewM5M5x0.8 pivot thumbscrew for GoPro housings and mountsGoPro thumbscrew/nut (scope mount project)M5Photographed and measured M5-0.8 thumbscrew and matching nut used on GoPro mount hardware; screw length 18mmGoPro Universal Car MountsM5Standard thumbscrew for connecting the camera to various automotive mounts.Gremsy Pixy-WE gimbal camera cover screws (4x)M3Docs: the camera cover is secured with 4 x M3Hikvision DS-1271ZJ-130-TRL pendant bracketM4six tapped bracket base holes for turret camera pendant assemblyHolosun 507k/407k screw, Glock 43X/48 MOS shim plateM4M4 x 0.7 x 12mmHolosun EPS Carry screw, Glock 43X/48 MOSM4M4 x 0.7 x 10.25mmHolosun SCS mounting screw (Walther PDP)M3M3 x 0.5 x 6.5mmHolosun SCS-MOS optic mounting screw (Glock)M3M3 x 0.5 x 6mmHP 8569B Spectrum Analyzer (Laboratory/Imaging)M1.2Metric screws used for front panel rotary switch repairsi-PRO / Panasonic WV-QWL100 camera mount bracketM3 / M4M3 screw used on the camera side of the wall mount bracket assemblyIdeal Scope Mounting System rifle scope mountM4Manual lists M4 Tx20 screws for rings, interfaces and tensioningIDS Imaging uEye SE camera module mounting threads (4x)M3Mechanical drawing labels 4x thread M3iOptron Carbon Fiber Tripod (#8061/8061A)M6Tripod tray has 10 M6 threaded mounting holes plus M12 center-post hole for attaching accessory rails/heads used with astronomy mounts (SkyGuider Pro, SkyTracker Pro, SkyHunter, HEM15, etc.)ISMS (Sweden) ISMS scope mount clamping screws (Torx T20)M5Manual states M5 Tx20 clamping screwsISMS (Sweden) ISMS scope mount rings and interface screws (Torx T20)M4Rare metric exception; most rail and optic hardware is imperial #4-48/#6-40/#8-32ISMS Picatinny scope mount rail clampM5Manual states M5 Torx-20 clamping screws to clamp the mount to the railISMS Picatinny scope mount rings and red-dot interfacesM4Manual states M4 Torx-20 screws for rings and optic interfaces (Aimpoint Micro, RMR, Deltapoint)JIS/ISO metric camera and lens internal screws (JCIS #0 driver family)M1.4Precision JIS HSS-E tap & drill set advertised specifically as 'M1.4 x 0.30mm' for camera and lens repair taps, and referencing JCIS-standard camera screws being metric-threadedKayak and canoe accessory rail trackM5Track mount hardware kits specify M5 x 20 mm screws with track nutsKurokesu QR-PLATE-20 Arca-Swiss plateM2.5 / M3DIN912 socket cap screw supplied with plateLab microscope adjustment screwsM2Fine adjustment and stage clamp screwsLeica M-series stereo microscopes (M165/M205)M3 / M42x M3 screws release the stage holder during mechanical-stage removalLeica M125/M165/M205 stereo microscope stageM3 / M4Manual: remove the two M3 screws and the holder from the mechanical stageMain barrel / eyepiece extension tube holder set screwsM4ScopeStuff database: 'Main Barrel, eyepiece extension tube holder (2) = M4-.7'Meade 1.25" diagonal prism, Telenegative Barlow #122, 2" diagonalM3Multiple Meade eyepiece-accessory retaining screws listed as M3-.5 in the ScopeStuff databaseMeade 2" to 1.25" eyepiece adapter / 1.25" visual backM4ScopeStuff database: 'Meade 2" to 1-25" adapter (1) = M4-.7' and 'Meade 1.25" visual back (where the prism goes in) (1) = M4-.7'Meade LX200 Barlow / eyepiece retaining screwM3M3 x 0.5 retaining screw reported for Meade 1.25in 2x Ultima BarlowMetabones/Wooden Camera Unified BMPCC4K camera cage lens support clampM4The manufacturer's official installation guide instructs users to 'Loosen M4 screws holding lens support clamp' when configuring the lens support rod on the Unified BMPCC4K cage.Micro FPV / tiny-whoop dronesM1.2FPV camera and flight-controller stack screwsMicroscope objective turretM2.5the nosepiece / objective retaining collar on lab microscopesMicroscope objective turret and stageM3Turret and stage mounting screwsMicroscope stage clip / condenserM1.6holds the specimen stage clips or condenser assemblyMiniature board camera (M12/S-mount) lens holder mounting screwM1.6M12x0.5 lens holder with 20mm hole spacing is compatible with M1.6 mounting screwsNBK SSCZS-M1.4 miniature captive screwM1.4Pan-head captive machine screw catalogued for precision medical and optical instrumentsNEMA TS-2 traffic signal control cabinet (roadside traffic controller cabinet)M4NY DOT NEMA Traffic Signal Cabinet specification explicitly requires M4 screws for securing terminal and distribution assembly panels within the NEMA 3R traffic cabinet per its hardware detail sectionNewBeeDrone action camera mount kitM5M5 mounting hardware set for action cam mountsNewport M-FAM4 fixed angle adapterM44° fixed angle optical mount adapter with M4 mounting threads.Newport M-HM-2 edge-grip filter mountM4M4 mounting thread, for 50.8 mm optics.Newport M-RPR-410-8 optical tableM6Metric M6 holes on a 25mm gridNewport M-RPR-46-8 optical tableM6Listed with M6 tapped hole patternNewport M-RS2000-410-8 optical tableM6Metric M6 holes on a 25mm gridNewport M-SA2-06X18 solid aluminium optical breadboardM6M6 tapped through-holes on 25 x 25mm gridNewport M-SG-36-2 honeycomb optical tableM6M6 tapped mounting grid across a 900 x 1800mm tableNewport M-SP-2 / M-SP-4 optical postsM4 / M6M4 tapped hole at one end of the post (M6 at the other)Newport M-SP-2 optical postM4 / M6M4 tapped hole in one end (M6 in the other), 50.8 mm post.Newport M-SP-4 optical postM4 / M6M4 tapped hole one end, M6 the other; 101.6 mm post.Newport M-SP-4 optical post, 101.6mm height, 12.7mm diameterM4 / M6M4 tapped hole in one endNewport M-ST-UT2-410-8 SmartTableM6Metric M6 holes on a 25mm gridNewport M-TSP-1 miniature postM2 / M4M2 tapped hole on one end, M4 on the other; 38.1 mm post.Newport M-UCS-310-8 cleanroom optical tableM6Table top has metric M6 tapped holesNewport MM-050-HEX-M platform optical mountM3M3 hex adjustment screws give plus/minus 11 degrees of tiltNextbase Dashcam Universal MountM6Suction cup base thread compatible with most dash cameras.Nodal Ninja Ultimate M2 panoramic headM3screws for modular rotator/bracket assembly on camera panoramic mountOakley O Matter / steel frame hingeM1.4common replacement on Holbrook Ti and steel-line hingesOlympus BH-2 / BH2-5RE microscope nosepieceM2M2 x 3mm and M2 x 4mm pan head and countersunk screws hold the objective turret retaining ringOlympus BH-2 / MIC-D microscope frameM2Parts codes 3PUK2X8SA, 3PUK2X7SA, 3PUK2X10SA, 3PUTB2X6SA indicate M2 screws at 6-10mmOlympus BH-2 microscope frameM3Parts code AWU 3X4SA = M3x4mm frame screw; AB3X10SA = M3x10mm; AHU3X8SA = M3x8mmOlympus BH-PRE microscope nosepieceM2M2 x 3mm screws on the nosepiece assembly (same assembly also uses out-of-range M2.6 x 5mm screws)OpenFlexure Delta StageM33x M3x8mm screws in the official bill of materialsOpenFlexure Delta Stage frameM46x M4x6mm button head screws hold the printed frame togetherOpenFlexure Delta Stage v1.1.0 motor mountsM2.58x M2.5x8mm screws secure the stepper motorsOpenFlexure Microscope AMS translation stageM3M3x8mm socket head cap screw, ISO 4762 / DIN 912, A2 stainlessOphthalmic instrument service hardware (Duclos Lenses)M2M2 x 2mm slotted set screw sold as instrument service partOptic/scope ring mounting screw manufactured to engineering drawing (fastener supplier drawing, generic optics mount hardware)M4Fastener manufacturer engineering drawing for a screw explicitly dimensions the thread as "M4X0.7", used on an optics-mount tapped-hole assembly with a nylon-tipped set screw "for securing of mounted optic"Optical breadboard / optical table (metric)M6Metric breadboards are tapped M6 on a 25mm grid — the metric alternative to 1/4-20 on 1in centersOptoSigma OBC-4560-M6 optical breadboardM6M6 tapped through-holes on 25mm spacing (M4 variant also offered)Orion 60mm dovetail finder bracket #05041M5ScopeStuff database: 'Orion 60mm dovetail finder bracket #05041 (6) = M5-.8 x 12mm'Orion StarMax 127 base mount boltsM6ScopeStuff database: 'Orion Starmax 127 base mount bolts (2) = M6-1 x 16 Rosette'Panasonic WV-NF5C outdoor camera housingM3Cover fixing screws, manual states M3 x 3Partizan / Pilotix PT10 V3 FPV frameM2 / M3camera and small hardware screwsPrecision instrument hex socket head screws (used in cameras/electronics repair)M1.6NBK catalog SNSS miniature hex socket head cap screw series explicitly offers M1.6 nominal thread with selectable lengths 2-12mmPrimaLuceLab PLUS dovetail bar interconnection screwsM6PrimaLuceLab's official support article states PLUS dovetail plates connect to other PLUS elements 'with standard M6 screws' for rigidity.Raspberry Pi Camera ModuleM2the two small holes on the camera boardRaspberry Pi camera module mountsM2.5Third-party camera mounts use M2.5/M2 board holesReally Right Stuff style P-5 Arca-Swiss plate (tripodhead.com)M3safety stop socket head cap screws, qty 2Refrigerator light cover and shelf clipsM3interior light lens and shelf supportsRiflescope ring capM4clamps the scope ring halves around the tubeRiflescope turret capM2holds the elevation and windage caps to the scope bodyRimless eyewire tension screwM1.4clamps the lens edge into the rimless bracketRucker Machine Tall 10/22 optics mountM3optic-to-mount screws (4x)RunCam Micro Swift 2 / Micro Sparrow 2 / Racer Nano 2 / Micro Eagle FPV camerasM2camera case side mounting holesSamsara CM33 / CM34 dashcam mountM3Hex mount locking screw on each side of the bracketScopeStuff nylon thumbscrew kitM3 / M4 / M5 / M6telescope diagonal/barlow/accessory thumbscrews, M3-0.5Self-aligning spring hinge screw (Tabco Optical)M1.4Spring-hinge screw with unthreaded guide point, 2.0mm headShield Sights Dove Tail optic mountM3Manufacturer's recommended screw torque table explicitly lists 'M3 Screw Torque - 0.8Nm' for the mount's fixing screwsShield Sights Optic Ready (MOS) MountM4Manufacturer's recommended screw torque table explicitly lists 'M4 Screw Torque - 2Nm' alongside M3 for the mount's fixing screwsShield Sights optic-ready / dovetail red dot mountsM3 / M4optic-to-mount fixing screw, torque 0.8 NmSIG SAUER ROMEO-RS reflex sight, mounting to SIG P365 pistol optic cutM3Operator's manual torque table specifies "M3X0.5-15MM" mounting screw for "SIG P365 (WITH M3 MOUNT HOLES)"SIG SAUER ROMEO-RS reflex sight, mounting to SIG Pro-cut slides / P365 slides with M4 mount holesM4Operator's manual torque table specifies "M4X0.7-12.5MM" for "SIG PRO CUT SLIDES, SIG P365 SLIDES WITH M4" and "M4X0.7-12MM" for other listed mounting surfacesSig Sauer ROMEO1 Pro mounting screwM4SHCS M4 x 0.7 x 8.5mm per vendor writeup, not the Sig manualSig Sauer ROMEOZero screw, P322-footprint slideM4Owner's manual: (2) M4 x 0.7 screwsSig Sauer ROMEOZero screw, P365-footprint slideM3Owner's manual: (2) M3 x 0.5 screwsSlim optical drives (9.5 / 12.7mm)M3bezel and mounting bracket screws, unlike desktop 5.25in baysSmallRig 2245 SSD Clamp for BMPCC 4K/6K cagesM4SmallRig's official operating instructions state the SSD Holder mount 'is fixed to the top left corner of the cage by two M4 screws,' with M5 knob screws locking the SSD itself.SmallRig 4261 cage (Nikon Z f)M2.5secondary anti-twist locking screwSmallRig BSS2710 gimbal mounting plateM4Plate mounts via two captive M4 screws for DJI Ronin-S/SC and RS2/RSC2SmallRig camera cages and rigsM2 / M2.5 / M3Older-version gear lock screws take four M2; the 26-piece set covers M2-M4 plus 1/4in and 3/8inSmallRig camera cages, handles, L-plates and accessoriesM2SmallRig 26-piece screw set (AAK2326/MB2734) for camera accessories explicitly lists included metric sizes: M2, M2.5, M3, M4 (plus 1/4" and 3/8")SmallRig CCP2525 cage (Panasonic S5)M2.5anti-twist locking screwSmallRig CCP2646 cage (Lumix GH5/GH5 II/GH5S)M2.5side anti-twist locking screwSmallRig Cold Shoe Mount (2-pack, product 2060)M2.5Product 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'Some Nikkor lens mountsM2Repair-forum contributor (calvin83) states 'The M2 screws are used on some of the Nikkors,' with suggested length around 4mmSpectacle frame hinge/temple screws (ISO 11381 standard)M1.2ISO 11381:2016 defines spectacle-frame screw threads including M1.2 x 0.25 as a standard ophthalmic optics thread sizeStrobe-enhanced microscopy stage (Wenzel Lab open hardware)M3M3 x 20mm stainless steel screw listed in mechanical partsSunglasses temple tip / end pieceM1.2adjustable temple tips on sport sunglassesTelescope accessory thumb screwsM3Anodized accessory thumb screws explicitly sold in M3 and M4, with M3 commonly used for smaller eyepiece/accessory threadsTelescope dovetail rail / mounting plateM6Dovetail bars offer M6 plus 1/4in and 3/8in camera thread optionsTelescope eyepiece fixing set-screwM4Set-screw explicitly listed as M4x12 for eyepiece fixing in eyepiece holders/focusersTelescope finder-scope shoe / base (TS-Optics)M4Finder shoe with 14mm hole spacing sized for M4 screws into the telescope tubeTelescope metric thumb screw for telescope partsM3Listing: 'Metric Thumb Screws M3 M4 Telescope Parts... Size: M3 x 8mm'Telescope thumb screws for diagonals, adapters and focusersM3'TS Optics M3 thumb screw 7mm ... Suitable for many diagonal mirrors, adaptors and focusers'Telescope Vixen dovetail saddle clampM6Countersunk bores accept M6/M8 bolts alongside imperial camera threadsThorlabs 25mm pedestal pillar postsM4Page states 8-32 (M4) taps on both ends of the metric postsThorlabs 25mm pedestal pillar posts (large tap option)M6Same page lists 1/4-20 (M6) taps as the metric large-thread optionThorlabs cage system adapters (16 to 30mm, 30 to 60mm)M4Adapters available with 8-32 (M4) tapped holes for post mountingThorlabs CCM1-BS013/M cage cube beamsplitterM4M4 tap on the 30mm cage-cube-mounted beamsplitterThorlabs CCM1-BS028/M 90:10 cage cube beamsplitterM4M4 tap for post mountingThorlabs CCM5-BS017/M 16mm cage cube beamsplitterM4M4 tap on the 16mm cage cube variantThorlabs circular solid aluminum breadboards (MBR /M)M6Metric versions are through-tapped with M6 holesThorlabs CP08/M SM1-threaded cage plateM4Metric variant uses M4 mounting tap where imperial uses 8-32Thorlabs CP14/M 30mm cage plateM4M4 tap for post mounting of the double-bore cage plateThorlabs CPMA4/M snap-on 30mm cage bracketM4Bracket named for its M4 tap, mounts cage assemblies to postsThorlabs DDR25/M direct drive rotation mountM4SM05-threaded bore with M4 tapsThorlabs DLM1/M dual rotation mountM4M4 tap for 1-inch optics dual rotation mountThorlabs ELL21/M rotation mountM4Product spec states M4 x 0.7 tap for post mountingThorlabs FBTB/M kinematic mount for 5mm cube opticsM4M4 tap for post mountingThorlabs FW103/M motorized filter wheelM4Metric variant listed with M4 taps for post or breadboard mountingThorlabs KM100CP/M kinematic mirror mountM4Catalog data lists M4 mounting for the metric SM1-threaded variantThorlabs KM200CP/M kinematic mount for 2-inch opticsM4M4 taps for post mountingThorlabs KMS/M compact kinematic mirror mountM4Listed with M4 taps for post mountingThorlabs KS05T/M SM05 kinematic mirror mountM4Three adjusters with M4 tapsThorlabs LCP35/M 60 mm cage plateM4M4 tap for Ø2" double-bore optic mount cage plate.Thorlabs LCP35/M 60mm cage plateM42in optic double-bore mount tapThorlabs LCP35/M 60mm cage plate with Ø2" double-bore optic mountM4M4 tapThorlabs LCPMA4/M 60mm cage bracketM4M4 tap for 60mm cage bracket post mountingThorlabs MB2090/M aluminum optical breadboardM6Metric breadboard with M6 double-density tapped mounting gridThorlabs nested rotation mountsM4Page lists 8-32 (M4) tap for post mounting on metric variantsThorlabs QM1/M kinematic flexure mountM4M4 tap for 1-inch mirror flexure mountThorlabs SMR1/M Ø1" lens mount with SM1 internal threadsM4M4 tap for cage rod attachmentTilta TA-RF-LPL adapter ring support (RED KOMODO cage)M4M4x8 secures the LPL adapter; M4x12.5 mounts it to the camera cageTripod head quick-release plate lockM2.5the safety screw locking a plate into a ball head clampTS Optics Losmandy-style dovetail bar, 254mm long flat base (PSL2)M6Six + two holes for 1/4" and M6 Allen screws, countersunkTS-Optics 2" Crayford focuser (Newtonian version)M4Focuser is fixed to the telescope tube with four countersunk screws explicitly specified as M4TS-Optics Losmandy-style dovetail plate, 200mm (L-UP7)M610x M6 thread bores, slotted/countersunk for M6 and 1/4" screwsTS-Optics Losmandy-style dovetail plate, 200mm length (L-UP7)M310x M6 thread bores and countersunk bores; also slotted holes for M6 and 1/4" screws (note: main threads are M6, listed for cross-check)TS-Optics Vixen-EQ5 Style Dovetail Bar (255mm)M6mounting holes in dovetail bar for adapting telescopes/lenses to mountsUnderwater camera housing latch and portM4the latch and port hardware that keeps the seal tightUniversal eyeglass hinge screw (2.0mm head)M1.4Standard hinge/rim screw sold across optical suppliersUniversal Red Dot Pattern Mounting Plate (fits Vortex Viper, Burris Fast Fire 3, UTG Reflex Micro Dot, TruGlo Tru-Tec, Crimson Trace CTS-1250, Springfield Dragonfly)M3Manufacturer mounting instructions explicitly specify M3 x 8mm screws (torque 12 in-lb) for these optic footprints, which are also used on some archery bow-sight red-dot mounts sharing the same footprintVintage camera / electronics faceplatesM3Faceplate and knob screws in restorationVintage Japanese camera lens mounts (mixed brands)M1.4Forum poster documents purchasing and testing M1.4 screws, 2mm long, black finish, used on lens mount hardware sourced from a Japanese screw specialty shopVivotek AM-520 camera mounting capM6M6 socket set screws clamp the cap to the pipeVivotek IT9360-H / IT9380-H dome cameraM4Camera-to-bracket screws on the AM-21M mount, M4x8Vivotek IT9389-H / IT9389-HT dome cameraM3Camera-to-bracket screws on the AM-21M mount, M3x8Vixen POLARIE dovetail slide barM6threaded mounting holes on camera equipment dovetail plateVortex Viper enclosed micro red dot on Beretta 1301 Comp / Browning Maxus IIM4Vortex compatibility chart lists the mounting fastener thread as M4 x 0.7.Webcam lens housing and boardM2Small machine screws inside compact webcamsWimberley AP-502 lens foot plateM4M4 x 10mm socket head screws mount the replacement footWimberley AP-553 lens foot plateM34x M3 socket screws mount the Arca-Swiss replacement foot to a telephoto lensWimberley AP-600 / AP-604 lens foot platesM4M4 x 14mm socket head cap screws (x4) mount the Arca-Swiss plate to the lens footWimberley AP-602 replacement plateM44x M4 screws attach the plate to the lens footWimberley AP-606 Arca-Swiss lens foot plateM3Safety stop screws: "M3 x 3mm Socket Head Cap Screw (Qty 2)"Wimberley AP-609 lens foot plateM4M4 x 12mm socket head screws mount the replacement footWimberley AP-640 replacement lens footM34x M3 mounting screws plus 2x M3 safety-stop screwsWimberley Arca-Swiss replacement feet (AP-500/600 series)M3M3 x 6mm safety-stop / anti-rotation screws (x2)Wimberley P-20 Arca-Swiss style tripod lens plateM3Safety stop screws: M3 x 6mm socket head cap screws (qty 4)Wimberley P-5 camera body plateM32x M3 safety-stop screws (primary mount screw is imperial)Windshield ADAS camera bracketM6Driver-assist camera and sensor bracketsWooden Camera 153200 SSD Guard (RED SCARLET)M3socket caps securing SSD guard to camera bodyWooden Camera 153250 SSD Guard (RED EPIC)M3socket caps securing SSD guard to camera bodyWooden Camera ARRI ALEXA LF Sharkfin / Zip Box ProM3M3 replacement thumbscrew for 24V battery bracket and clamp-on matte box backWooden Camera battery plate wedge (Blackmagic URSA Cine 12K/17K)M2.5M2.5 captive screws fasten the battery plate wedge to the camera backWooden Camera bolt-on accessory plate adapterM2.5Adapts accessories with M2.5 threaded mounting holes to 1/4-20 or 3/8-16 rig pointsWooden Camera Pocket Cage 168800M2.5cage alignment screws (M2.5 hex key supplied)Wooden Camera Pocket Cage 168800 (Blackmagic Pocket Cinema)M3socket cap screws for cage top plateWooden Camera UMB-1 Universal Mattebox (Base/Clamp On/Swing Away/Pro)M4Replacement screw set lists 4x M4x16mm socket cap screws and 2x M4x8mm screws used to assemble the matte boxZeiss camera lens focus scale screwM1.4Genuine Zeiss factory screw pack explicitly listed as thread M1.4, length 2mm, slotted drive, used on Zeiss Super Speed focus scaleZWO EFW filter wheel to ASI cameraM2.5filter wheel mounting screws (community-confirmed)

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