screwfitmentdatabase

3D Printing, CNC & Robotics screw sizes

149 items with confirmed screw specs.

2020 extrusion T-nuts (light duty)M3slide-in nuts for the 6mm slot on 20x20 profile2020 extrusion T-nuts (standard)M5the most common structural T-nut for 2020 framing2020 T-slot hammer head boltsM5Standard T-nut and hammer-head bolts for the 2020 slot2020/2040 extrusion end tapM52020 profile with 4.2mm core hole taps to M52040 extrusion T-nutsM5standard drop-in nut for the 2040 6mm slot3030 extrusion T-nuts (heavy duty)M6for the 8mm slot on 3030 profile framing3030/4040 extrusion end tapM6Larger extrusion with 5mm core hole taps to M63D printer & CNC enclosuresM4panel and bracket screws3D printer hotend to X-carriageM4attaches the hotend assembly to the carriageActobotics servo horn / hubM2fixes a servo horn or hub to the boreArduino Mega 2560 mounting holesM3Mechanical drawing places M3-class holesArduino shield stacking standoffsM3adds rigidity when stacking shieldsArduino Uno / Mega mounting holesM3board mounting into enclosures (one hole near USB is oversized)Arduino Uno / shield mounting holesM3Official mechanical drawing shows M3-class mounting holesAvid CNC Laser KitM4 / M6Assembly instructions call out M4x16 (SHC), M4x6 (SHC) alignment screws, and an M4 grease fitting threaded into the linear bearing blockAvid CNC router mountM5router body to base adapter, socket head cap screwBambu Lab AMS unitM3holds the filament unit housing togetherBambu Lab printers (common screw guide)M3Chassis and toolhead assembly screws documented in the official screw tableBambu Lab X1 / P1 / A1 frame and toolheadM3frame, gantry and toolhead assembly screwsBambu Lab X1 / P1 series printersM3Bambu Lab's official screw guide documents metric M-series machine screws as the standard fastener throughout their printersBambu Lab X1/P1 General machine screws throughout the printerM3Official screw wiki documents M3x10 notation plus red/blue threadlocker coding; M screws must not be swapped with BT/ST self-tapping screwsBambu Lab X1/P1 heatbed transport anchorsM3Heatbed anchor screws reported as M3-20 or M3-23Bambu Lab X1/P1/AMS spare screw kitM3Official spares kit is predominantly M3 sizesBigTreeTech Manta M8P printer mainboardM4Board uses M4 standoff/mounting hole pattern to secure into printer enclosuresBlue Robotics T200 Thruster (used on BlueROV2 and other ROVs)M3Blue Robotics community forum thread confirms 'there are four M3 threaded holes on the cowling of the thruster at 4 points on a 19 mm diameter circle' for mounting the thrusterBondtech 17-tooth steel gearM3set screwBondtech extruder primary drive gear (5mm bore)M3grub/set screw for drive gearBondtech primary gear (8mm bore)M4grade 12.9 set screwCarbide 3D 80mm VFD spindle mount kitM6spindle mount socket head cap screws (Shapeoko)Carbide3D proximity switch upgrade kitM3Assembly guide lists M3 screws for mounting proximity switch bracketsCarbide3D Shapeoko 5 Pro CNC routerM3 / M4 / M5 / M6M3x6mm Socket Head Screws used repeatedly to secure the drag chain at both ends and to the Y-Left carriageCNC / V-slot limit switches & sensorsM3microswitch, sensor and cable-chain brackets on extrusion framesCNC router spindle clampM5clamps the spindle collar to the Z gantryCR-10 Max heat-block cooling shroudM3Build notes: 2x M3 x 8 socket head screws to mount the heat block cooling partCreality K1/Ender extrusion corner bracketsM4M4/M5 corner brackets on 2020-class printer framesCreality Sprite Extruder Pro kitM3hex socket round head mounting screws (x5)E3D V6 and clone hotend nozzlesM6Nozzle-to-heater-block interface is an M6 thread (V5/V6 blocks)E3D V6 hotend fixing kitM3Kit contains M3x3 and M3x10 socket dome screwsE3D-style hotend nozzlesM6standard M6x1 nozzle body thread used across printersEnder 3 V2 hotend and hotend coverM3Guide: 2x M3 x 6 button head for the cover, 2x M3 x 12 button head for the hotendEnder 3 V3 KE cooling fan bracketsM3Replacement bracket hardware specified as M3 x 8 (with M2 x 8 secondary)ESP32 DevKit boardsM3corner mounting holes on common dev boardsEurorack modular synth cases (e.g. Make Noise Skiff)M2.5M2.5 module screws with sliding square nuts used by some case makersFDM hotend and extruder mounts (general)M3Creality/Prusa/Voron hotend and extruder bolts are M3Genmitsu 3018-PROVer CNC routerM3Assembly manual documents M3 hardware for control-box and board mountingGimatic MFI-A374-A/B mounting flange for Mechatronics grippers on UR robotsM6Flange with screws for mounting grippers onto robot with ISO 9409-1-50-4-M6 interface (robot side and gripper side)goBILDA thru-hole REV to threaded pattern adaptorM416 mm pattern mounting screws, counterbored for socket headGT2 pulley grub screwsM3locks the timing pulley onto the motor shaftGT2 timing pulley grub screwsM3M3 x 4 hex socket set screws clamping pulley to motor shaftHeated bed leveling screwsM4holds the bed to the Z carriage over springsHeated bed to Y-carriageM3bed mounting over levelling springsHusqvarna Automower 305 / 308 robotic mowerM5Cover and bumper screws, parts list states Screw M5x12InMoov open-source robotM3 / M4structural joints, servo brackets, printed part fastening (Allen countersunk, ~50 qty)Inventables X-Carve 300W 24VDC spindle kitM4spindle-to-carriage mount screws (3x socket head cap)ISO 9409-1-50-4-M6 robot tool flangeM6standard 4x M6 low-head socket cap screws on the 50mm robot tool-flange bolt circleitem T-Slot Nut F (line 8) fastening set with hexagon socket head cap screwM6item24 product page for Fastening Set 8 6-8mm lists Hexagon Socket Head Cap Screw DIN 912-M8x18 with matching T-Slot Nut 8 St, and separately the T-Slot Nut F line 8 product explicitly offers Thread option M6 (grub screw DIN 916 M6x6) for T-slot aluminum profile systemsKlipper toolhead PCBs (Voron/BTT boards)M2.5PCB-to-mount standoff screwsLDO Voron 2.4 300/350 kitM3 / M5motion system, bearing blocks, idlers, extrusion assemblyLEGO Technic-compatible threaded metal axleM4Aftermarket metal Technic-compatible axle explicitly sold as '45L THREADED M5 Metal Axle' -- note this specific listing is M5, included here for cross-reference to the M4/M5 family used in metal Technic-style axle replacementsLeRobot SO-101 armM3structural link and gripper assemblyLinear rail carriage blockM3attaches a toolhead plate to the sliding blockMakeblock cap screw round head hex M4 (catalog part)M4Manufacturer catalog entry explicitly lists 'CAP SCREW ROUND HEAD HEX M4' as a Makeblock platform componentMakeblock mBot Neo/mBot2 assembly kitM2.5 / M4Official parts list for building the robot explicitly includes 'Screw M2.5*12mm'MASSO CNC homing sensorM3Official docs state easy mounting using M3 screwsMaytronics Dolphin Supreme M4 Robotic Pool/Pond CleanerM4Assembly instructions manual for the Supreme M4 motor unit and diaphragm assembly explicitly documents M4-threaded fasteners used to secure the motor housing and caddy componentsMetal Technic-compatible axle/shaft (LEGO Technic-style robotics building system)M5Product explicitly named 'Technic Compatible 45L THREADED M5 Metal Axle Bar Shaft' -- a metal drop-in axle for Technic-style beams with a real M5 external thread for locking/attachmentMG996R servo mounting tabsM3through-holes in the standard-size servo bodyMGN12 linear railM3countersunk bolts fixing the rail to a gantry plateMGN9 linear railM3countersunk bolts fixing the small rail to the frameMicro Swiss probe bracket (3D printer BLTouch-style)M3metal probe bracket to print-head carriagemicro:bit enclosure mountingM2.5mounting the board into cases and kitsNEMA 17 stepper motor (Novanta/IMS)M2Optional rear-shaft face mounting holes, M2 tapped 5.1mm deepNEMA 17 stepper motor faceM3four tapped holes, 31mm bolt spacing, 4.5mm min depthNEMA 17 stepper motor faceplateM3Four front mounting holes, M3 x 0.5 tapped 4.5mm deep minimumNEMA 17 stepper motor mountingM3bolts the stepper to its frame bracketNEMA 23 stepper motor faceM5four tapped holes, about 47.1mm bolt spacingNEMA 23 stepper motor, 3A variantM3Front mounting holes tapped M3, 3.18mm deepNEMA 23 stepper motor, 3A variant (Novanta/IMS)M2Rear-shaft option tapped M2, 3.18mm deepNVIDIA Jetson Nano carrier boardM2.5mounting holes on the developer kit boardNVIDIA Jetson Orin Nano / Xavier NX carrierM2.5Jetson carrier mechanical specs document M2.5 mounting holesOpenBeam / MakerBeam 15x15 mm extrusionM3T-slot fastener bolts for 10x10 and 15x15 mm beamOpenBuilds C-Beam MachineM5low-profile screws joining V-slot/C-Beam extrusions and gantry platesOpenBuilds gantry plate bracketsM3M3 for brackets, M5 for T-slot on C-Beam/V-Slot buildsOpenBuilds V-Slot T-nut boltsM5V-Slot 20x20/20x40 uses M5 T-slot boltsOriginal Prusa MK4 3D printerM3Prusa's own assembly guide: most assembly screws are M3 (2.5 mm hex key), frame screws are M5 (3 mm hex key)Original Prusa MK4 kitM3 / M5Frame and X-carriage fasteners (2.5 mm hex driver)PCB standoffs for compact electronicsM2.5M2.5 standoffs common across the Raspberry Pi ecosystemPoppy Humanoid robotM2 / M3Dynamixel servo horn mounting screwsPrinter / CNC extrusion frame boltsM5joins 2020 and 3030 extrusion with roll-in T-nutsPrusa frame-to-extrusion jointsM5frame corner brackets into aluminium extrusionPrusa i3 MK3S/MK4 (official fastener cheatsheet)M2M2x8 special screw listed in Prusa's official fastener identification cheatsheetPrusa i3 MK3S/MK4 frame and Y-rod holdersM5M5x10, M5x16, M5x20 and M5x85 screws listed in the official Prusa cheatsheetPrusa i3 MK3S/MK4 heatbed and frameM4M4 screws M4x5 through M4x25 listed in the official Prusa cheatsheetPrusa i3 MK3S/MK4 printed parts and extruderM3M3 machine screws from M3x4 to M3x40 listed by part code in the official Prusa cheatsheetPrusa i3 MK3S+ extruder sensor screwM2Prusa's official upgrade guide calls for a 1.5mm Allen key for the M2 extruder screwPrusa MINI frame and extruderM3frame, Y-carriage and extruder fastenersPrusa MK3S extruderM3extruder body, idler and Bondtech gear assembly are M3 throughoutPrusa MK3S/MK3.5 to MK4 upgrade kitM3frame and extruder mounting hardwarePrusa MK4 / MK4S kitM3Nextruder body, hotend fan and printed-part mountingPrusa MK4 NextruderM3hotend and fan shroud mountingPrusa Original MK4 Frame assembly structural screwsM3Assembly manual: 2.5mm Allen key for most of the M3 screws on the assemblyPrusa Original MK4 Main frame joint screwsM5Assembly manual: 3mm Allen key for M5 screws used on the frameRaspberry Pi 4 / 5 mounting holesM2.5the four corner holes used by cases and standoffsRaspberry Pi Compute Module 4 carrier/IO boardM2.5CM4 carriers reuse the Pi-standard M2.5 standoff spacingRaspberry Pi HAT standoffsM2.5the official HAT spacing between Pi and add-on boardRaspberry Pi nylon standoff packsM2.5panel and robot-chassis mountingRaspberry Pi Zero mounting holesM2.5the two diagonal holes on the small boardRatRig V-Core 3M6frame assembly washer/fastener setRatRig V-Core 3.1 (200x200)M3linear rail mounting to extrusion (28 screws)RatRig V-Core 3.1 (300x300)M3linear rail mounting to extrusion (38 screws)RatRig V-Core 3.1 X-axis assemblyM32020 extrusion to X-carriage fastenersREV Robotics hex standoffsM3M3 x 0.5mm pitch standoffs in 15/25/30/40/45/60/420mm lengths for robotics and electronics enclosuresRobotiq 2F-85 / 2F-140 gripperM5gripper-to-coupling screws (M5x0.8) and the fingertip retention screwRobotiq 2F-85 / 2F-140 gripper (Universal Robots)M6coupling-to-mounting-plate screws with tooth lock washers, and I/O coupling to flangeRobotiq low-profile gripper couplingM38x M3-0.5 low-head cap screws on the alternate coupling bolt patternSG90 micro servo caseM2.5the tiny self-tapping screws holding the case togetherShapeoko 5 Pro CNC routerM5"Use a 4mm hex key and four (4) M5x10mm SHCS to secure the X-motor to the motor mount"SIBOOR Voron 2.4 350 / Voron 0.2 R1 kitsM3frame, motion and toolhead fastener setSienci LongMill inductive sensor kitM3Installation guide documents M3 mounting screws for sensor bracketsSlice Engineering Mosquito / Mosquito Conduct hotendM1.4Hot block-to-heat-sink screws, M1.4 x 0.3 socket head with threadlockerSlice Engineering Mosquito hotendM3Hot block to heat sink, M3 x 0.5 screwsSO-100 / SO-ARM100 robot arm (LeRobot)M2 / M3Feetech servo horn and bracket mountingUltimaker Original heated bed / Z-stage upgrade kitM3 / M4 / M6Assembly manual specifies M3x25mm screws for frame mounting and M3x10mm screws for Z-stage assembly, plus M3 nuts and M3 locknuts throughout the buildUniversal Robots e-Series tool flange (UR3e/UR5e/UR10e)M6Manual: four M6 threaded holes attach a tool to the flange; M6 class 8.8 bolts torqued to 8 Nm.Universal Robots mounting brackets / flangesM6M6 class 8.8 ISO 4762 bolts on several UR flange configurations (UR20/UR30 tool flange itself is M8, out of scope)Universal Robots UR3e/UR5e/UR10e/UR16e tool output flangeM6Tool flange has four M6 threaded holes for attaching end effectors; bolts strength class 8.8, ISO 4762Universal Robots UR5e tool flangeM6Four M6 threaded holes on the tool flange; class 8.8 bolts torqued to 8 NmUR-series robot tool flange (SICK EOAS mounting ring)M6SICK support article states the UR3e/UR5e/UR10e/UR16e robot tool flange has four M6 threaded holes for attaching a tool; M6 bolts tightened per torque specVEX / Actobotics channel and gussetsM3structural screws joining channel and plate partsVoron 0.2 / LDO V0.2-S1 kitM3gantry, extruder, panel and toolhead mountingVoron 2.4M2self-tapping screws for toolhead PCB/sensor mountingVoron 2.4 / TridentM3 / M5gantry blocks, panel mounts, bed mounts, electronics bayVoron 2.4 / Trident printed partsM3most printed mounts, toolhead and panel screwsVoron 2.4 350 (LDO kit) gantry and frameM5LDO Voron 2.4 BOM lists M5x40 socket-head cap screws for frame/gantry assemblyVoron 2.4 3D printerM3 / M5Official manual: M3x8 SHCS hold each of the four Z-drive stepper motor mounts; M3x40 SHCS on the Z-drive top plate; M3x16 SHCS at the 3-point bed mountsVoron 2.4 bed extrusionsM5bed extrusion frame jointsVoron 2.4 electronics bayM3mainboard (SKR/Octopus) and PSU mounting to plateVoron 2.4 frameM5Frame socket head cap screwsVoron 2.4 frame corner bracketsM5BOM specifies M5x16 SHCS/BHCS for frame extrusion jointsVoron 2.4 gantry and carriage hardwareM3BOM lists M3x6/12/16/20/30 SHCS and BHCS throughoutVoron 2.4 gantry and panelsM3AB drive motor mount, gantry and panel screwsVoron Afterburner toolheadM3fan shroud, hotend clamp, extruder mountVoron gantry and frame jointsM5corner connectors and bracing into 2020/3030 railVoron Stealthburner toolheadM3fan shroud, Clockwork 2 extruder body, ADXL mountVoron StealthBurner toolhead (stock hotend)M3Official manual calls for M3 x 8 bolts to hold the hotend in placeVoron StealthBurner toolhead with Dragon hotendM2.5Dragon hotend variant requires M2.5 x 8mm screws instead of the stock M3Voron TridentM3Z-axis lead screw mount and AB motor mount bracketsX-Carve / Shapeoko-style OpenBuilds clone kitsM5MakerSlide extrusion rail mounting boltsZodiac Vortex 3 Saphir robotic pool cleanerM4Genuine OEM spare part is an A2 stainless steel pan head Pozi machine screw explicitly specified as M4×25 mm, used in the robot's structural assembly

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