1U rack-mount PDU (American Denki) screw size
M6 · length not stated in the sources
If you are replacing a screw on 1U rack-mount PDU (American Denki), the thread is M6. None of the sources we found gives an exact length, so measure the original before you order.
The record covers M6 mounting screw and cage nut sets for 19-inch rack fixing.
This entry is marked confirmed and comes from en.americandenki.co.jp.
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.
1U rack-mount PDU (American Denki) 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 | M6 mounting screw and cage nut sets for 19-inch rack fixing | Confirmed |
Fitment records and sources
M6 mounting screw and cage nut sets for 19-inch rack fixing
pitch 1 mm · tap 5 mm · clearance 6.6 mm · PH3 / Torx T30
How to check the screw before you buy
- Board standoffs and enclosure bosses set the usable length: the screw should clamp the board without bottoming in the standoff.
- 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.
- Rack rails come in M6, M5 and imperial 10-32 — check which cage nuts your rack uses before buying a bag of screws.
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Devices whose records share a thread with 1U rack-mount PDU (American Denki), closest length match first.
- Thule ProRide 591/598 Bike Rack also M6
- Yamaha F25 / T25 outboard motor also M6
- Large soundbars & subwoofers also M6
- 19-inch rack-mount audio/AV equipment also M6
- Electrolux Professional compact rack-type dishwasher also M6
- 19-inch rack cage nut (metric square-hole rails) also M6
- Hammond square-hole rack cage nut also M6
- Power wheelchair drive motor mounts also M6
Questions about 1U rack-mount PDU (American Denki) screws
- What size screw does 1U rack-mount PDU (American Denki) use?
- M6 for M6 mounting screw and cage nut sets for 19-inch rack fixing.
- How long are the screws in 1U rack-mount PDU (American Denki)?
- 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 1U rack-mount PDU (American Denki)?
- 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.