NEMA 17 stepper motor (Novanta/Schneider standard) screw size
M3 · 4.5 mm long
Our records put NEMA 17 stepper motor (Novanta/Schneider standard) on M3 screws, 4.5 mm long.
It is listed for four front face mounting holes, 4.5 mm minimum thread depth.
This entry is marked confirmed and comes from novantaims.com.
An M3 screw is 3 mm in diameter with a 0.5 mm pitch, tapped with a 2.5 mm drill; imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3.
NEMA 17 stepper motor (Novanta/Schneider standard) screw specifications
One row per fitment record. Head, drive are shown only where the source states them; pitch is the ISO coarse pitch for the thread.
| Thread | Length | Pitch | Head | Drive | Where it goes | Status |
|---|---|---|---|---|---|---|
| M3 | 4.5 mm | 0.5 mm | not stated | not stated | Four front face mounting holes, 4.5 mm minimum thread depth | Confirmed |
Fitment records and sources
Four front face mounting holes, 4.5 mm minimum thread depth
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
How to check the screw before you buy
- Check the strength class stamped on the head (8.8, 10.9, A2-70) and replace like for like.
- Diameter: across the threads an M3 screw measures about 3 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.5 mm from one thread crest to the next (20 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
- Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
- The record states 4.5 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
- Driver: the source does not name the drive. Standard M3 heads take PH1 for Phillips and T10 for Torx, and a 2.5 mm hex key for socket heads; a bit that fits loosely will cam out and strip the head.
- Tightening: no device-specific torque is published in these records. The site's general figure for M3 is about 80-130 N·cm into metal threads and 35-60 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M3
- On FPV motors, screw length is safety-critical: one turn too long and the screw crushes the motor windings. Measure arm + base depth, and dry-fit before powering up.
- Museum/AV projector mounting kits typically bundle four to six thread sizes (M3–M6) in one bag to fit varied projector OEM patterns — always match the specific length/thread pair actually used for a given projector model rather than assuming all sizes apply universally.
More in Industrial & Machinery
ABB ACS580 motor terminal box / cable glandsABB ACS580 terminal hardware (frames R3-R5)ABB random-wound motor terminal boxes (ACS580 drive systems)Allen-Bradley ControlLogix 1756-A chassisAngle grinder gear housingBianchi / Nuova Simonelli / Rheavendors / Saeco vending machineCircular saw blade guard pivotContender Planetary Mixer MXP004/MXP005 (commercial bakery mixer) electrical diagram terminal screwsCordless drill housing shellsCOSEL power supply terminal block (used in industrial/pump/water-treatment control panels)Datalogic DS2400 fixed-mount barcode readerDeWalt D51430 / D51431 pneumatic nailer
Browse all 113 in Industrial & Machinery →The same screw also fits
Devices whose records share a thread with NEMA 17 stepper motor (Novanta/Schneider standard), closest length match first.
- Motherboard to case standoffs also M3 × 4.5 mm
- HP Compaq Presario R4000 also M3 × 4.5 mm
- Olympus BH-2 microscope frame also M3 × 4.5 mm
- Dell PowerEdge R7525 BOSS S2 kit also M3 × 4.5 mm
- Fishing reel handle and drag knob also M3 × 4.5 mm
- CubeSat Kit solar panel clips and chassis also M3 × 4.5 mm
- Mean Well NMP650 / NMP1K2 modular power supply also M3 × 4.5 mm
- NEMA 23 stepper motor, 3A variant also M3 × 4.5 mm
Questions about NEMA 17 stepper motor (Novanta/Schneider standard) screws
- What size screw does NEMA 17 stepper motor (Novanta/Schneider standard) use?
- M3 × 4.5 mm for four front face mounting holes, 4.5 mm minimum thread depth.
- How long are the screws in NEMA 17 stepper motor (Novanta/Schneider standard)?
- The record gives 4.5 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- What is the thread pitch of an M3 screw?
- 0.5 mm (coarse), which is the standard pitch for M3 machine screws; a 0.35 mm fine pitch exists but is uncommon. The tap drill is 2.5 mm and the normal clearance hole is 3.4 mm.
- What screwdriver do I need for NEMA 17 stepper motor (Novanta/Schneider standard)?
- The sources do not name the drive. For M3, Phillips heads normally take PH1 and Torx heads T10; socket heads take a 2.5 mm hex key.
- Can I use an imperial screw instead of M3?
- No. Imperial look-alike: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3. Use a true M3 screw so it does not cross-thread or strip the hole.