Boss compact guitar pedal battery door screw size
M3 · 10 mm long
Our records put Boss compact guitar pedal battery door on M3 screws, 10 mm long.
The record covers thumb screw is M3 thread with a 10mm shaft.
Head and drive, as the source states them: thumb screw (knurled) head.
This entry is marked likely and comes from shuntool.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.
Boss compact guitar pedal battery door 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 | 10 mm | 0.5 mm | Thumb screw (knurled) | not stated | Thumb screw is M3 thread with a 10mm shaft | Likely |
Fitment records and sources
Thumb screw is M3 thread with a 10mm shaft
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
How to check the screw before you buy
- Stage and rack gear mixes metric with #10-32 rack screws, so check before swapping.
- 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: for thumb screw (knurled) screws, measure from under the head to the tip (countersunk heads are the exception: they are measured overall).
- The record states 10 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
- Suunto dive computer service manuals reference strap pins and battery compartment springs but do not explicitly cite a metric screw thread size in the sections reviewed; do not infer M2/M2.5 fitment for Suunto dive computer straps without direct confirmation.
- Guitar bridges and pickups exist in both metric (M3) import and imperial (#4-40/#6-32) USA versions - check origin before ordering.
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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M3 x 10mm Phillips Wafer Head Screw for Sim Racing Wheel Paddle Shifter - Single Replacement Black
$0.10 each · min. 50
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M3 x 10mm Phillips Wafer Head Screw for RC Car/Truck Chassis Mount - Single Replacement Black
$0.10 each · min. 50
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M3 x 10mm Phillips Wafer Head Screw for 3D Printer Frame Assembly - Single Replacement Black
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More in Audio, Music & Stage
The same screw also fits
Devices whose records share a thread with Boss compact guitar pedal battery door, closest length match first.
- Martin MAC 500 moving head fixture also M3 × 10 mm
- Fender Standard Series bass bridge also M3 × 10 mm
- Fender/Squier import Stratocaster & Jazzmaster bridge also M3 × 10 mm
- Prusa MK4 Nextruder also M3 × 10 mm
- Microscope objective turret and stage also M3 × 10 mm
- Voron Stealthburner toolhead also M3 × 10 mm
- Xbox Series S internal chassis also M3 × 10 mm
- Voron 2.4 electronics bay also M3 × 10 mm
Questions about Boss compact guitar pedal battery door screws
- What size screw does Boss compact guitar pedal battery door use?
- M3 × 10 mm for thumb screw is M3 thread with a 10mm shaft.
- How long are the screws in Boss compact guitar pedal battery door?
- The record gives 10 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 Boss compact guitar pedal battery door?
- 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 Boss compact guitar pedal battery door?
- TechSpareWarehouse (our own store) lists M3 x 10mm, which matches the length in the records above.


