What size screw does REV Robotics T-slot extrusion screw (41-1907) use?

M3 × 8 mm for T-slot screw for robotics and drone frames.

How long are the screws in REV Robotics T-slot extrusion screw (41-1907)?

The record gives 8 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 REV Robotics T-slot extrusion screw (41-1907)?

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.

Where can I buy replacement screws for REV Robotics T-slot extrusion screw (41-1907)?

TechSpareWarehouse (our own store) lists M3 x 8mm, which matches the length in the records above.

REV Robotics T-slot extrusion screw (41-1907) screw size

M3 · 8 mm long

Our records put REV Robotics T-slot extrusion screw (41-1907) on M3 screws, 8 mm long.

The record covers T-slot screw for robotics and drone frames.

This entry is marked confirmed and comes from revrobotics.global.

For reference, M3 is 3 mm across the threads at 0.5 mm pitch. The imperial size people confuse it with: #5-40 (3.18 mm) or #4-40 — neither interchanges with M3.

REV Robotics T-slot extrusion screw (41-1907) 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	8 mm	0.5 mm	not stated	not stated	T-slot screw for robotics and drone frames	Confirmed

Fitment records and sources

M38mmconfirmed

T-slot screw for robotics and drone frames

pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10

Source

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 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 8 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

2020 extrusion T-nuts come in M3/M4/M5 and are not interchangeable — M3 is accessory-only, M5 is structural.
M3 (3.0mm, 0.5mm pitch) is not #6-32 UNC (~3.5mm) — they look identical and cross-thread, the single most common PC-building mistake.

Pitch gauge · Screw size finder · Torque guide

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.

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The same screw also fits

Devices whose records share a thread with REV Robotics T-slot extrusion screw (41-1907), closest length match first.

DJI Agras Agras T50/T25/T16/T20/T30 and FlyCart 30 airframe screw also M3 × 8 mm
5-inch brushless motor to arm also M3 × 8 mm
1/10 scale RC cars also M3 × 8 mm
Nerf blaster thumbscrews (mid sizes) also M3 × 8 mm
FPV flight controller stack 30.5x30.5mm also M3 × 8 mm
FPV drone motors (5-inch class) also M3 × 8 mm
RC brushless motor mounts also M3 × 8 mm
ALware Quad Flyer Spider 500 quadcopter kit also M3 × 8 mm

Questions about REV Robotics T-slot extrusion screw (41-1907) screws

What size screw does REV Robotics T-slot extrusion screw (41-1907) use?: M3 × 8 mm for T-slot screw for robotics and drone frames.
How long are the screws in REV Robotics T-slot extrusion screw (41-1907)?: The record gives 8 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 REV Robotics T-slot extrusion screw (41-1907)?: 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.
Where can I buy replacement screws for REV Robotics T-slot extrusion screw (41-1907)?: TechSpareWarehouse (our own store) lists M3 x 8mm, which matches the length in the records above.

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