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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.

ThreadLengthPitchHeadDriveWhere it goesStatus
M310 mm0.5 mmThumb screw (knurled)not statedThumb screw is M3 thread with a 10mm shaftLikely

Fitment records and sources

M310mmlikely

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

  1. Stage and rack gear mixes metric with #10-32 rack screws, so check before swapping.
  2. 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.
  3. 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.
  4. Length: for thumb screw (knurled) screws, measure from under the head to the tip (countersunk heads are the exception: they are measured overall).
  5. The record states 10 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
  6. 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.
  7. 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.

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 Boss compact guitar pedal battery door, closest length match first.

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.