Hammond square-hole rack cage nut screw size
M6 · length not stated in the sources
Our records put Hammond square-hole rack cage nut on M6 screws. None of the sources we found gives an exact length, so measure the original before you order.
It is listed for available in 10-32, 12-24 and M6 mounting profiles.
This entry is marked confirmed and comes from hammfg.com.
For reference, M6 is 6 mm across the threads at 1 mm pitch. The imperial size people confuse it with: 1/4in-20 (6.35 mm) — the tripod/camera thread; visibly larger than M6.
Hammond square-hole rack cage nut 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 | not stated | 1 mm | not stated | not stated | Available in 10-32, 12-24 and M6 mounting profiles | Confirmed |
Fitment records and sources
Available in 10-32, 12-24 and M6 mounting profiles
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.
- 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
- Tapped 19in rack rails are traditionally 10-32 or 12-24 imperial; M6 is the cage-nut convention for square-hole rails, not an EIA requirement.
- Server rack cage nuts come in M4/M5/M6 for the same square hole — confirm what your rails and equipment ears use.
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Devices whose records share a thread with Hammond square-hole rack cage nut, closest length match first.
- 19-inch rack cage nut (metric square-hole rails) also M6
- Electrolux Professional compact rack-type dishwasher also M6
- Rittal TS enclosure system also M6
- Power wheelchair drive motor mounts also M6
- Thule ProRide 591/598 Bike Rack also M6
- 1U rack-mount PDU (American Denki) also M6
- 19-inch rack-mount audio/AV equipment also M6
- Large soundbars & subwoofers also M6
Questions about Hammond square-hole rack cage nut screws
- What size screw does Hammond square-hole rack cage nut use?
- M6 for available in 10-32, 12-24 and M6 mounting profiles.
- How long are the screws in Hammond square-hole rack cage nut?
- 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 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 Hammond square-hole rack cage nut?
- 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.