MTH model train part screw size
M1.4 · 4 mm long
Our records put MTH model train part on M1.4 screws, 4 mm long.
Where it is used: MTH Trains sells 'SCREW(M1.4*4.0mm/T.Round Head)' as an official spare part, part IA-2602002000.
This entry is marked confirmed and comes from mthtrains.com.
An M1.4 screw is 1.4 mm in diameter with a 0.3 mm pitch, tapped with a 1.1 mm drill; imperial look-alike: #0-80 UNF (1.52 mm) — close in diameter, different pitch, do not mix.
MTH model train part 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 |
|---|---|---|---|---|---|---|
| M1.4 | 4 mm | 0.3 mm | not stated | not stated | MTH Trains sells 'SCREW(M1.4*4.0mm/T.Round Head)' as an official spare part, part IA-2602002000 | Confirmed |
Fitment records and sources
MTH Trains sells 'SCREW(M1.4*4.0mm/T.Round Head)' as an official spare part, part IA-2602002000
pitch 0.3 mm · tap 1.1 mm · clearance 1.6 mm · PH000 / PH00 / Torx T2–T3
How to check the screw before you buy
- Frame and motor screws must not reach the motor windings; check the length against the motor's mounting depth.
- Diameter: across the threads an M1.4 screw measures about 1.4 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.3 mm from one thread crest to the next (33.33 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 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 M1.4 heads take PH000 / PH00 for Phillips and T2–T3 for Torx, and a 1.3 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 M1.4 is about 8-12 N·cm into metal threads and 4-7 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M1.4
- M1.4 is below common commodity stock; Mitutoyo sells these as branded service parts rather than generic hardware.
- M1.4 is THE Samsung Galaxy internal screw across S, A, M and Note lines — but lengths run 2.3mm to 4mm+ and are not interchangeable between models.
Buy these screws at TechSpare Warehouse
In stock and shipped from South Carolina. Our black screws are Phillips wafer head (low profile); match the head style and length to the original before you order.
More in Drones, RC & Gimbals
The same screw also fits
Devices whose records share a thread with MTH model train part, closest length match first.
- FPV flight-controller / ESC stacks also M1.4 × 4 mm
- DJI Mini 3 / Mini 3 Pro / Mini 4 Pro propellers also M1.4 × 4 mm
- Micro RC helicopters also M1.4 × 4 mm
- Miniature precision instrument screws (NBK) also M1.4 × 4 mm
- Eyeglass/spectacle hinge screws also M1.4 × 4 mm
- Eyewire/optical and precision-instrument screws (representative of hearing aid / camera size class) also M1.4 × 4 mm
- Miniature plastic machine screw (RENY) marketed for micro-precision assemblies including hearing-aid-scale hardware also M1.4 × 4 mm
- Fairphone 4 internal screws also M1.4 × 4 mm
Questions about MTH model train part screws
- What size screw does MTH model train part use?
- M1.4 × 4 mm for MTH Trains sells 'SCREW(M1.4*4.0mm/T.Round Head)' as an official spare part, part IA-2602002000.
- How long are the screws in MTH model train part?
- The record gives 4 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- What is the thread pitch of an M1.4 screw?
- 0.3 mm (coarse), which is the standard pitch for M1.4 machine screws. The tap drill is 1.1 mm and the normal clearance hole is 1.6 mm.
- What screwdriver do I need for MTH model train part?
- The sources do not name the drive. For M1.4, Phillips heads normally take PH000 / PH00 and Torx heads T2–T3; socket heads take a 1.3 mm hex key.
- Can I use an imperial screw instead of M1.4?
- No. Imperial look-alike: #0-80 UNF (1.52 mm) — close in diameter, different pitch, do not mix. Use a true M1.4 screw so it does not cross-thread or strip the hole.