Rack-mount network and AV equipment screw size
M5 · 19 mm long
If you are replacing a screw on Rack-mount network and AV equipment, the thread is M5, 19 mm long.
The record covers kendall Howard rack screw datasheet lists M5 as an available rack screw thread.
This entry is marked confirmed and comes from mm.digikey.com.
M5 means a 5 mm nominal diameter with a 0.8 mm thread pitch. Imperial look-alike: #10-32 (4.83 mm) — the other common rack thread; check before mixing.
Rack-mount network and AV equipment 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 |
|---|---|---|---|---|---|---|
| M5 | 19 mm | 0.8 mm | not stated | not stated | Kendall Howard rack screw datasheet lists M5 as an available rack screw thread | Confirmed |
Fitment records and sources
Kendall Howard rack screw datasheet lists M5 as an available rack screw thread
pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25
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 M5 screw measures about 5 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.8 mm from one thread crest to the next (12.5 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 record states 19 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
- Driver: the source does not name the drive. Standard M5 heads take PH2 for Phillips and T25 for Torx, and a 4 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 M5 is about 4.0-6.0 N·m into metal threads and 1.5-2.5 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M5
- APC Easy PDU rack-mount screws are self-tapping M5x10, intended for the PDU's own mounting brackets rather than standard rack cage-nut threads.
- Stacking frame + rack tab + fender stay needs 18-20mm bolts, not the 12-16mm that come with a cage.
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Devices whose records share a thread with Rack-mount network and AV equipment, closest length match first.
- Shelving brackets also M5 × 19 mm
- Bike rack & fender eyelets also M5 × 19 mm
- Leviton EV Series charging pedestal (EPED1 / EPED2) also M5 × 19 mm
- Rowing machine rail brackets also M5 × 19 mm
- E-scooter fenders & kickstands also M5 × 19 mm
- EcoFlow Power Kits Power Hub wall/RV mounting hardware also M5 × 19 mm
- Wheelchair armrest and footrest brackets also M5 × 19 mm
- RV appliance and vent fan brackets also M5 × 19 mm
Questions about Rack-mount network and AV equipment screws
- What size screw does Rack-mount network and AV equipment use?
- M5 × 19 mm for kendall Howard rack screw datasheet lists M5 as an available rack screw thread.
- How long are the screws in Rack-mount network and AV equipment?
- The record gives 19 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- What is the thread pitch of an M5 screw?
- 0.8 mm (coarse), which is the standard pitch for M5 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 4.2 mm and the normal clearance hole is 5.5 mm.
- What screwdriver do I need for Rack-mount network and AV equipment?
- The sources do not name the drive. For M5, Phillips heads normally take PH2 and Torx heads T25; socket heads take a 4 mm hex key.
- Can I use an imperial screw instead of M5?
- No. Imperial look-alike: #10-32 (4.83 mm) — the other common rack thread; check before mixing. Use a true M5 screw so it does not cross-thread or strip the hole.