Industrial machinery screw size
M6 · 12 to 25 mm long
Our records put Industrial machinery on M6 screws in lengths from 12 to 25 mm.
It is listed for guard and cover bolts, brackets.
This entry is marked reported.
M6 means a 6 mm nominal diameter with a 1 mm thread pitch. Imperial look-alike: 1/4in-20 (6.35 mm) — the tripod/camera thread; visibly larger than M6.
Industrial machinery 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 | 12–25 mm | 1 mm | not stated | not stated | guard and cover bolts, brackets | Reported |
Fitment records and sources
guard and cover bolts, brackets
pitch 1 mm · tap 5 mm · clearance 6.6 mm · PH3 / Torx T30
How to check the screw before you buy
- Rack and enclosure hardware mixes metric and imperial (#8-32, #10-32, #6-32), so confirm the thread before forcing a screw.
- 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 records span 12–25 mm, which means different positions take different lengths — match each hole to its own screw.
- 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
- Rack hole threads vary: 10-32 and 12-24 are still common in US racks alongside M6 - check the rail before buying.
- UR cobot flange bolts are commonly sold/quoted as 'M6 bolts' but the required length depends on the tool thickness; UR's own guidance is bolt class M6-8.8 to ISO4762 without a fixed length, so length must be selected per adapter/tool stack-up, not assumed as a fixed mm value.
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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M6 x 12mm Black Wafer Head TV Back-Panel Screws for Vizio VQD65R-1004, VQD70R-1001, VQM55C-1004, VQM65C-1004 – 8-Pack Replacement
$6.99Choose size -
M6 x 12mm Black Wafer Head Brake Line Screws for GOTRAX G3, G4, GMAX & GMAX Ultra – 8-Pack Replacement
$6.99Choose size -
M6 x 16mm Black Wafer Head Rack Screws for Rittal DK 7094.100 / 7094.110 / 7094.140 19-inch Rack – 20-Pack Replacement
$8.99Choose size -
M6 x 16mm Black Wafer Head Awning & Box Screws for Thule Awning 326 / 327 / 328, Conduit Box 317 & Xpedition 820 / 821 (50333) – 8-Pack Replacement
$6.99Choose size
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Devices whose records share a thread with Industrial machinery, closest length match first.
- Weight machine adjustment brackets also M6 × 15–25 mm
- BMW Hexhead/K-Bike/Oilhead EnDuraLast charging-system component screw also M6 × 22 mm
- Rad Power Bikes RadMini 4 also M6 × 20–25 mm
- Patch panel rack ears also M6 × 12–16 mm
- 19in / 10in server rack cage nut and screw kit also M6 × 12 mm
- Rack-mount servers, switches and routers also M6 × 19 mm
- VELA Samba 150 Dental Chair also M6 × 16 mm
- Car license plate also M6 × 12–20 mm
Questions about Industrial machinery screws
- What size screw does Industrial machinery use?
- M6 × 12–25 mm for guard and cover bolts, brackets.
- How long are the screws in Industrial machinery?
- The records range from 12 to 25 mm depending on the position, so match each screw to its own hole.
- 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 Industrial machinery?
- 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.