19-inch server racks screw size
M6 · 12 to 16 mm long
Our records put 19-inch server racks on M6 screws in lengths from 12 to 16 mm.
It is listed for cage nuts and rail screws (also sold M5 and 10-32 UNC).
This entry is marked confirmed.
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.
19-inch server racks 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 | cage nuts and rail screws (also sold M5 and 10-32 UNC) | Confirmed |
Fitment records and sources
cage nuts and rail screws (also sold M5 and 10-32 UNC)
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 racks are not all metric: 10-32 and 12-24 UNC are still the norm in North America, with M6 the metric/square-hole cage-nut option.
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 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 -
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
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Devices whose records share a thread with 19-inch server racks, closest length match first.
- item Roller Conveyor Aluminum Fastening Bracket D30 also M6 × 14 mm
- Rack mounting screw and cage nut set (NRS-M1616-N-50) also M6 × 16 mm
- Rittal VX VX enclosure hinge countersunk Torx screw also M6 × 14 mm
- Motorcycle/scooter turn signal indicator mounting bolt also M6 × 15 mm
- Weidmueller FKSC busbar screw accessory also M6 × 12 mm
- StarTech rack screw and cage-nut kit also M6 × 12 mm
- Ninebot Max G30 rear fender also M6 × 12–16 mm
- Thule Bike Racks (General Replacement) also M6 × 16 mm
Questions about 19-inch server racks screws
- What size screw does 19-inch server racks use?
- M6 × 12–16 mm for cage nuts and rail screws (also sold M5 and 10-32 UNC).
- How long are the screws in 19-inch server racks?
- 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 server racks?
- 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.