How long are the screws in Arca-Swiss / GoPro DIY adapters?

The records range from 6 to 10 mm depending on the position, so match each screw to its own hole.

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 Arca-Swiss / GoPro DIY adapters?

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 Arca-Swiss / GoPro DIY adapters?

TechSpareWarehouse (our own store) lists M3 x 6mm, M3 x 8mm and M3 x 10mm, which match lengths in the records above.

Arca-Swiss / GoPro DIY adapters screw size

M3 · 6 to 10 mm long

If you are replacing a screw on Arca-Swiss / GoPro DIY adapters, the thread is M3 in lengths from 6 to 10 mm.

It is listed for 3D-printed and third-party adapters secure the mount tab with M3.

This entry is marked reported and comes from printables.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.

Arca-Swiss / GoPro DIY adapters 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	6–10 mm	0.5 mm	not stated	not stated	3D-printed and third-party adapters secure the mount tab with M3	Reported

Fitment records and sources

M36-10mmreported

3D-printed and third-party adapters secure the mount tab with M3

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

Source

How to check the screw before you buy

Printers and POS terminals often use self-tapping screws into plastic; re-use the original thread path instead of cutting a new one.
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 records span 6–10 mm, which means different positions take different lengths — match each hole to its own screw.
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

GoPro's own official Dive Housing user guide does not itself state a metric screw size for the housing body; only third-party accessory manufacturer (INON) manuals explicitly cite M6 screws for their add-on arms/adapters attaching to the housing.
Camera tripod and Arca threads are imperial 1/4-20 and 3/8-16, never M3.

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.

More in Printers, POS & Office

Bixolon SRP-B300II POS receipt printer Brother DCP-8110D laser printer Brother HL-2170W laser printer Brother MFC-8950DW laser printer Coin validator / hopper front plate Coin-door / vending coin mech holder thumb screw COSEL power supply terminal block Diebold Nixdorf ATM (PN 49221808000F-26)Diebold Nixdorf DN100 ATM Diebold Nixdorf DN100 nylon screw Diebold Opteva ATM cassette screw Elo countertop self-service stand screw

Browse all 58 in Printers, POS & Office →

The same screw also fits

Devices whose records share a thread with Arca-Swiss / GoPro DIY adapters, closest length match first.

Verifone P400 PIN pad front mounting plate screw also M3 × 8 mm
Equinox 6200M POS terminal mount (PTS-04-6200) also M3 × 6 mm
Elo self-service kiosk stand, strap screws also M3 × 8 mm
Universal Red Dot Pattern Mounting Plate — Burris Fast Fire 2, Vortex Venom footprint also M3 × 6 mm
JCM DBV-200 bill validator (P-Tite) also M3 × 6 mm
Diebold Nixdorf ATM (PN 49221808000F-26) also M3 × 6 mm
HP Color LaserJet 8500 2000-sheet input unit also M3 × 6–8 mm
Lexmark T620 laser printer also M3 × 6–8 mm

Questions about Arca-Swiss / GoPro DIY adapters screws

What size screw does Arca-Swiss / GoPro DIY adapters use?: M3 × 6–10 mm for 3D-printed and third-party adapters secure the mount tab with M3.
How long are the screws in Arca-Swiss / GoPro DIY adapters?: The records range from 6 to 10 mm depending on the position, so match each screw to its own hole.
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 Arca-Swiss / GoPro DIY adapters?: 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 Arca-Swiss / GoPro DIY adapters?: TechSpareWarehouse (our own store) lists M3 x 6mm, M3 x 8mm and M3 x 10mm, which match lengths in the records above.

Heads up: shipping delay