Milwaukee 2402-22 drill (bulletin 54-42-3303) screw size
M3 · 18 mm long
The screws used on Milwaukee 2402-22 drill (bulletin 54-42-3303) are M3, 18 mm long.
It is listed for gearcase screws, "M3 x 18mm T-10 ST Screw (Gearcase) (4)".
This entry is marked confirmed and comes from media.toolpartspro.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.
Milwaukee 2402-22 drill (bulletin 54-42-3303) 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 | 18 mm | 0.5 mm | not stated | not stated | Gearcase screws, "M3 x 18mm T-10 ST Screw (Gearcase) (4)" | Confirmed |
Fitment records and sources
Gearcase screws, "M3 x 18mm T-10 ST Screw (Gearcase) (4)"
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
How to check the screw before you buy
- Industrial parts lists usually give the full callout (thread, length, head, grade); match all four, not just the thread.
- 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 18 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
- Drill chuck retaining screws are commonly LEFT-HAND thread (e.g. M6 x 1.0 LH) — turn clockwise to remove.
- Power-tool gearcase and clamshell screws are usually thread-forming (marked "ST") even when the parts list gives an M-size — a normal machine screw of the same size may not hold in the plastic boss.
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Devices whose records share a thread with Milwaukee 2402-22 drill (bulletin 54-42-3303), closest length match first.
- Milwaukee 1/2 in. driver-drill (54-06-3302) also M3 × 18 mm
- PC watercooling radiator fan screws also M3 × 18 mm
- FPV carbon frame arms and standoffs also M3 × 18 mm
- Wurth Elektronik WA-HEX hexagonal lock screw also M3 × 18 mm
- Ultimaker Original heated bed / Z-stage upgrade kit also M3 × 18 mm
- Rexel S16 paper shredder also M3 × 18 mm
- Wurth Elektronik WA-SPAIE plastic spacer stud also M3 × 18 mm
- Prusa MK4 Nextruder also M3 × 18 mm
Questions about Milwaukee 2402-22 drill (bulletin 54-42-3303) screws
- What size screw does Milwaukee 2402-22 drill (bulletin 54-42-3303) use?
- M3 × 18 mm for gearcase screws, "M3 x 18mm T-10 ST Screw (Gearcase) (4)".
- How long are the screws in Milwaukee 2402-22 drill (bulletin 54-42-3303)?
- The record gives 18 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 Milwaukee 2402-22 drill (bulletin 54-42-3303)?
- 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.