Wimberley Arca-Swiss replacement feet (AP-500/600 series) screw size
M3 · 6 mm long
The screws used on Wimberley Arca-Swiss replacement feet (AP-500/600 series) are M3, 6 mm long.
It is listed for M3 x 6mm safety-stop / anti-rotation screws (x2).
This entry is marked confirmed and comes from tripodhead.com.
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.
Wimberley Arca-Swiss replacement feet (AP-500/600 series) 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 mm | 0.5 mm | not stated | not stated | M3 x 6mm safety-stop / anti-rotation screws (x2) | Confirmed |
Fitment records and sources
M3 x 6mm safety-stop / anti-rotation screws (x2)
pitch 0.5 mm · tap 2.5 mm · clearance 3.4 mm · PH1 / Torx T10
How to check the screw before you buy
- Camera and optics hardware often uses short screws into thin threaded plates, so check engagement before tightening fully.
- 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 6 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
- Camera tripod and Arca threads are imperial 1/4-20 and 3/8-16, never M3.
- On FPV motors, screw length is safety-critical: one turn too long and the screw crushes the motor windings. Measure arm + base depth, and dry-fit before powering up.
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 6mm Replacement Screws for XLR Audio Connectors Phillips Wafer Head 50-Pack
$4.99 -
M3 x 6mm Phillips Wafer Head Carbon Steel Machine Screws for XLR Audio Connectors | 50-Pack (Black)
$4.99
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M3 x 6mm Phillips Wafer Head Screw for 3D Printer Frame Assembly - Single Replacement Black
$0.10 each · min. 50
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M3 x 6mm Phillips Wafer Head Screw for Boutique Guitar Pedal Enclosure - Single Replacement Black
$0.10 each · min. 50
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Devices whose records share a thread with Wimberley Arca-Swiss replacement feet (AP-500/600 series), closest length match first.
- Olympus BH-2 microscope frame also M3 × 6 mm
- Wimberley AP-640 replacement lens foot also M3 × 6 mm
- Glock MOS adapter plate to slide (Docter/Meopta/Insight/Vortex/Burris footprint) also M3 × 6 mm
- Wimberley P-20 Arca-Swiss style tripod lens plate also M3 × 6 mm
- Microscope objective turret and stage also M3 × 6 mm
- Aimpoint SM-2001/2007 Micro T1/T2 mount also M3 × 6 mm
- Holosun SCS-MOS optic mounting screw (Glock) also M3 × 6 mm
- Glock MOS optic-to-plate mounting screw also M3 × 6 mm
Questions about Wimberley Arca-Swiss replacement feet (AP-500/600 series) screws
- What size screw does Wimberley Arca-Swiss replacement feet (AP-500/600 series) use?
- M3 × 6 mm for M3 x 6mm safety-stop / anti-rotation screws (x2).
- How long are the screws in Wimberley Arca-Swiss replacement feet (AP-500/600 series)?
- The record gives 6 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 Wimberley Arca-Swiss replacement feet (AP-500/600 series)?
- 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 Wimberley Arca-Swiss replacement feet (AP-500/600 series)?
- TechSpareWarehouse (our own store) lists M3 x 6mm, which matches the length in the records above.