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ETC Unison DRd Rack Enclosure (dimming rack for theatrical rigging systems) screw size

M4 · 10 mm long

Our records put ETC Unison DRd Rack Enclosure (dimming rack for theatrical rigging systems) on M4 screws, 10 mm long.

Where it is used: DRd Rack Enclosure Installation Manual explicitly calls for M4 screws to secure module faceplates and internal terminal hardware in the dimmer rack.

This entry is marked likely and comes from fullcompass.com.

An M4 screw is 4 mm in diameter with a 0.7 mm pitch, tapped with a 3.3 mm drill; imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same.

ETC Unison DRd Rack Enclosure (dimming rack for theatrical rigging systems) 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.

ThreadLengthPitchHeadDriveWhere it goesStatus
M410 mm0.7 mmnot statednot statedDRd Rack Enclosure Installation Manual explicitly calls for M4 screws to secure module faceplates and internal terminal hardware in the dimmer rackLikely

Fitment records and sources

M4M4x10likely

DRd Rack Enclosure Installation Manual explicitly calls for M4 screws to secure module faceplates and internal terminal hardware in the dimmer rack

pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20

How to check the screw before you buy

  1. Rack and enclosure hardware mixes metric and imperial (#8-32, #10-32, #6-32), so confirm the thread before forcing a screw.
  2. Diameter: across the threads an M4 screw measures about 4 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
  3. Pitch: 0.7 mm from one thread crest to the next (14.29 crests per centimetre). A thread pitch gauge or the pitch-gauge tool settles it in seconds.
  4. Length: measure from under the head to the tip for pan, button, wafer and cap heads; countersunk (flat) heads are measured overall.
  5. The record states 10 mm. Going longer risks bottoming out or touching parts behind the hole; going shorter loses thread engagement.
  6. Driver: the source does not name the drive. Standard M4 heads take PH2 for Phillips and T20 for Torx, and a 3 mm hex key for socket heads; a bit that fits loosely will cam out and strip the head.
  7. Tightening: no device-specific torque is published in these records. The site's general figure for M4 is about 2.0-3.0 N·m into metal threads and 0.8-1.4 N·m into plastic bosses; snug it up and stop.

Common mix-ups with M4

  • Display mounts mix systems: the screen side is metric M4/M6, but the wall side of many mounts uses imperial wood screws such as #14 x 2.5in.
  • Grounding/earth-stud screws on hazardous-area (ATEX/IECEx) gas detectors are commonly M4 even though the enclosure body uses larger threaded glands — don't extrapolate the earth screw size to the whole unit.

Pitch gauge · Screw size finder · Torque guide

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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The same screw also fits

Devices whose records share a thread with ETC Unison DRd Rack Enclosure (dimming rack for theatrical rigging systems), closest length match first.

Questions about ETC Unison DRd Rack Enclosure (dimming rack for theatrical rigging systems) screws

What size screw does ETC Unison DRd Rack Enclosure (dimming rack for theatrical rigging systems) use?
M4 × 10 mm for DRd Rack Enclosure Installation Manual explicitly calls for M4 screws to secure module faceplates and internal terminal hardware in the dimmer rack.
How long are the screws in ETC Unison DRd Rack Enclosure (dimming rack for theatrical rigging systems)?
The record gives 10 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
What is the thread pitch of an M4 screw?
0.7 mm (coarse), which is the standard pitch for M4 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 3.3 mm and the normal clearance hole is 4.5 mm.
What screwdriver do I need for ETC Unison DRd Rack Enclosure (dimming rack for theatrical rigging systems)?
The sources do not name the drive. For M4, Phillips heads normally take PH2 and Torx heads T20; socket heads take a 3 mm hex key.
Can I use an imperial screw instead of M4?
No. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same. Use a true M4 screw so it does not cross-thread or strip the hole.