Thorlabs MB2090/M aluminum optical breadboard screw size
M6 · 12.7 mm long
The screws used on Thorlabs MB2090/M aluminum optical breadboard are M6, 12.7 mm long.
Where it is used: metric breadboard with M6 double-density tapped mounting grid.
This entry is marked confirmed and comes from thorlabs.com.
An M6 screw is 6 mm in diameter with a 1 mm pitch, tapped with a 5 mm drill; imperial look-alike: 1/4in-20 (6.35 mm) — the tripod/camera thread; visibly larger than M6.
Thorlabs MB2090/M aluminum optical breadboard 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 |
|---|---|---|---|---|---|---|
| M6 | 12.7 mm | 1 mm | not stated | not stated | Metric breadboard with M6 double-density tapped mounting grid | Confirmed |
Fitment records and sources
Metric breadboard with M6 double-density tapped mounting grid
pitch 1 mm · tap 5 mm · clearance 6.6 mm · PH3 / Torx T30
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 M6 screw measures about 6 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 1 mm from one thread crest to the next (10 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 12.7 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 M6 heads take PH3 for Phillips and T30 for Torx, and a 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 M6 is about 7-10 N·m into metal threads and 2.5-4.0 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M6
- Optical breadboards are metric only when the part number ends in /M; the default in North America is 1/4-20.
- Optical tables come in metric (M6 on 25mm centres) and imperial (1/4-20 on 1in centres) — mixing them cross-threads the table.
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Devices whose records share a thread with Thorlabs MB2090/M aluminum optical breadboard, closest length match first.
- Optical breadboard / optical table (metric) also M6 × 12.7 mm
- Windshield ADAS camera bracket also M6 × 12.7 mm
- Wurth Elektronik WA-SSTIE steel spacer stud also M6 × 12.7 mm
- Motorcycle fairing panels also M6 × 12.7 mm
- IV pole clamps also M6 × 12.7 mm
- 3030 extrusion T-nuts (heavy duty) also M6 × 12.7 mm
- Carbide3D Shapeoko 5 Pro CNC router also M6 × 12.7 mm
- Car license plate U-clip retaining fasteners (trim) also M6 × 12.7 mm
Questions about Thorlabs MB2090/M aluminum optical breadboard screws
- What size screw does Thorlabs MB2090/M aluminum optical breadboard use?
- M6 × 12.7 mm for metric breadboard with M6 double-density tapped mounting grid.
- How long are the screws in Thorlabs MB2090/M aluminum optical breadboard?
- The record gives 12.7 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- What is the thread pitch of an M6 screw?
- 1 mm (coarse), which is the standard pitch for M6 machine screws; a 0.75 mm fine pitch exists but is uncommon. The tap drill is 5 mm and the normal clearance hole is 6.6 mm.
- What screwdriver do I need for Thorlabs MB2090/M aluminum optical breadboard?
- The sources do not name the drive. For M6, Phillips heads normally take PH3 and Torx heads T30; socket heads take a 5 mm hex key.
- Can I use an imperial screw instead of M6?
- No. Imperial look-alike: 1/4in-20 (6.35 mm) — the tripod/camera thread; visibly larger than M6. Use a true M6 screw so it does not cross-thread or strip the hole.