19-inch rack cage nut (metric square-hole rails) screw size
M6 · 12 to 16 mm long
Our records put 19-inch rack cage nut (metric square-hole rails) on M6 screws in lengths from 12 to 16 mm.
It is listed for M6 cage nuts and M6 x 12mm screws are the metric option on EIA-310 square-hole rails alongside 10-32 and 12-24.
This entry is marked confirmed and comes from hammfg.com.
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.
19-inch rack cage nut (metric square-hole rails) 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 | 12–16 mm | 1 mm | not stated | not stated | M6 cage nuts and M6 x 12mm screws are the metric option on EIA-310 square-hole rails alongside 10-32 and 12-24 | Confirmed |
Fitment records and sources
M6 cage nuts and M6 x 12mm screws are the metric option on EIA-310 square-hole rails alongside 10-32 and 12-24
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 12–16 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
- Server rack cage nuts come in M4/M5/M6 for the same square hole — confirm what your rails and equipment ears use.
- 19-inch rack rails use three incompatible thread standards that share the same square hole: M6, 10-32 UNF and 12-24 UNC. Cage nuts for all of them look identical in a parts bin.
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 19-inch rack cage nut (metric square-hole rails), closest length match first.
- Electrolux Professional compact rack-type dishwasher also M6 × 14–16 mm
- Power wheelchair drive motor mounts also M6 × 16 mm
- 19-inch rack-mount audio/AV equipment also M6 × 12 mm
- Large soundbars & subwoofers also M6 × 12–16 mm
- cab Applicator A3200 print-and-apply labeling system (packaging line hardware) also M6 × 16 mm
- Weidmuller WDU 70/95 and WDU 120/150 terminal blocks also M6 × 16 mm
- Weidmueller ZB 35 busbar terminal blocks / DIN-rail busbar system also M6 × 16 mm
- Rittal SZ 4182.000 mounting bracket PS also M6 × 12 mm
Questions about 19-inch rack cage nut (metric square-hole rails) screws
- What size screw does 19-inch rack cage nut (metric square-hole rails) use?
- M6 × 12–16 mm for M6 cage nuts and M6 x 12mm screws are the metric option on EIA-310 square-hole rails alongside 10-32 and 12-24.
- How long are the screws in 19-inch rack cage nut (metric square-hole rails)?
- The records range from 12 to 16 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 19-inch rack cage nut (metric square-hole rails)?
- 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.