Thorlabs CCM5-BS017/M 16mm cage cube beamsplitter screw size
M4 · length not stated in the sources
Thorlabs CCM5-BS017/M 16mm cage cube beamsplitter takes M4 metric screws. None of the sources we found gives an exact length, so measure the original before you order.
Where it is used: M4 tap on the 16mm cage cube variant.
This entry is marked confirmed and comes from thorlabs.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.
Thorlabs CCM5-BS017/M 16mm cage cube beamsplitter 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 | not stated | 0.7 mm | not stated | not stated | M4 tap on the 16mm cage cube variant | Confirmed |
Fitment records and sources
M4 tap on the 16mm cage cube variant
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: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
- Driver: the source does not name the drive. Standard M4 heads take PH2 for Phillips and T20 for Torx, and a 3 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 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.
- M4 and 6-32 UNC share a nominal diameter with different pitch — a classic cross-thread in US-market kits.
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Devices whose records share a thread with Thorlabs CCM5-BS017/M 16mm cage cube beamsplitter, closest length match first.
- Leica M-series stereo microscopes (M165/M205) also M4
- ARRI plate for Sony VENICE 1/2 also M4
- Vortex Viper enclosed micro red dot on Beretta 1301 Comp / Browning Maxus II also M4
- Explore Scientific / Meade style finder shoe also M4
- Dashcam / action-cam suction mount ball joint also M4
- ScopeStuff nylon thumbscrew kit also M4
- Wimberley AP-609 lens foot plate also M4
- Telescope eyepiece fixing set-screw also M4
Questions about Thorlabs CCM5-BS017/M 16mm cage cube beamsplitter screws
- What size screw does Thorlabs CCM5-BS017/M 16mm cage cube beamsplitter use?
- M4 for M4 tap on the 16mm cage cube variant.
- How long are the screws in Thorlabs CCM5-BS017/M 16mm cage cube beamsplitter?
- None of the sources states a length. Remove one screw and measure it from under the head to the tip (overall for a countersunk head).
- 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 Thorlabs CCM5-BS017/M 16mm cage cube beamsplitter?
- The sources do not name the drive. For M4, Phillips heads normally take PH2 and Torx heads T20; socket heads take 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.