Wooden Camera UMB-1 Universal Mattebox (Base/Clamp On/Swing Away/Pro) screw size
M4 · 8 to 16 mm long
Wooden Camera UMB-1 Universal Mattebox (Base/Clamp On/Swing Away/Pro) takes M4 metric screws in lengths from 8 to 16 mm.
It is listed for replacement screw set lists 4x M4x16mm socket cap screws and 2x M4x8mm screws used to assemble the matte box.
Head and drive, as the source states them: socket cap head and Hex socket (Allen) drive.
This entry is marked confirmed and comes from woodencamera.com.
An M4 screw is 4 mm in diameter with a 0.7 mm pitch, tapped with a 3.3 mm drill; imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same.
Wooden Camera UMB-1 Universal Mattebox (Base/Clamp On/Swing Away/Pro) 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 |
|---|---|---|---|---|---|---|
| M4 | 8–16 mm | 0.7 mm | Socket cap | Hex socket (Allen) | Replacement screw set lists 4x M4x16mm socket cap screws and 2x M4x8mm screws used to assemble the matte box | Confirmed |
Fitment records and sources
Replacement screw set lists 4x M4x16mm socket cap screws and 2x M4x8mm screws used to assemble the matte box
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
How to check the screw before you buy
- Do not confuse metric mounting screws with the 1/4-20 or 3/8-16 tripod threads that cameras and clamps also carry.
- Diameter: across the threads an M4 screw measures about 4 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.7 mm from one thread crest to the next (14.29 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
- Length: for socket cap screws, measure from under the head to the tip (countersunk heads are the exception: they are measured overall).
- The records span 8–16 mm, which means different positions take different lengths — match each hole to its own screw.
- Driver: the source names a Hex socket (Allen) drive. For comparison, standard M4 heads take PH2 (Phillips) or T20 (Torx), or a 3 mm hex key.
- Tightening: no device-specific torque is published in these records. The site's general figure for M4 is about 2.0-3.0 N·m into metal threads and 0.8-1.4 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M4
- Camera rig/cage accessories (SmallRig, Wooden Camera/Metabones) frequently mix M4 structural screws with 1/4-20 and 3/8-16 imperial mounting points on the same product — verify which specific fastener a manual is referencing before ordering replacements.
- Dashcam mounts advertised as '1/4" M4 screw joint' have two different threads: the 1/4"-20 camera thread and a separate M4 grub screw for the ball joint — don't order the wrong one.
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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Devices whose records share a thread with Wooden Camera UMB-1 Universal Mattebox (Base/Clamp On/Swing Away/Pro), closest length match first.
- Tilta TA-RF-LPL adapter ring support (RED KOMODO cage) also M4 × 8–12.5 mm
- Underwater camera housing latch and port also M4 × 8–15 mm
- ATC (Advanced Transportation Controller) traffic signal cabinet standard also M4 × 10 mm
- Sig Sauer ROMEO1 Pro mounting screw also M4 × 8.5 mm
- Celestron NexStar 8 eyepiece holder set screw also M4 × 12 mm
- Wimberley AP-600 / AP-604 lens foot plates also M4 × 14 mm
- Holosun 507k/407k screw, Glock 43X/48 MOS shim plate also M4 × 12 mm
- NEMA TS-2 traffic signal control cabinet (roadside traffic controller cabinet) also M4 × 12 mm
Questions about Wooden Camera UMB-1 Universal Mattebox (Base/Clamp On/Swing Away/Pro) screws
- What size screw does Wooden Camera UMB-1 Universal Mattebox (Base/Clamp On/Swing Away/Pro) use?
- M4 × 8–16 mm for replacement screw set lists 4x M4x16mm socket cap screws and 2x M4x8mm screws used to assemble the matte box.
- How long are the screws in Wooden Camera UMB-1 Universal Mattebox (Base/Clamp On/Swing Away/Pro)?
- The records range from 8 to 16 mm depending on the position, so match each screw to its own hole.
- What is the thread pitch of an M4 screw?
- 0.7 mm (coarse), which is the standard pitch for M4 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 3.3 mm and the normal clearance hole is 4.5 mm.
- What screwdriver do I need for Wooden Camera UMB-1 Universal Mattebox (Base/Clamp On/Swing Away/Pro)?
- The source lists a Hex socket (Allen) drive. Standard M4 heads otherwise take PH2 (Phillips) or T20 (Torx), or a 3 mm hex key.
- Can I use an imperial screw instead of M4?
- No. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same. Use a true M4 screw so it does not cross-thread or strip the hole.