NEMA TS-2 traffic signal control cabinet (roadside traffic controller cabinet) screw size
M4 · 12 mm long
Our records put NEMA TS-2 traffic signal control cabinet (roadside traffic controller cabinet) on M4 screws, 12 mm long.
It is listed for NY DOT NEMA Traffic Signal Cabinet specification explicitly requires M4 screws for securing terminal and distribution assembly panels within the NEMA 3R traffic cabinet per its hardware detail section.
This entry is marked likely and comes from dot.ny.gov.
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.
NEMA TS-2 traffic signal control cabinet (roadside traffic controller cabinet) 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 |
|---|---|---|---|---|---|---|
| M4 | 12 mm | 0.7 mm | not stated | not stated | NY DOT NEMA Traffic Signal Cabinet specification explicitly requires M4 screws for securing terminal and distribution assembly panels within the NEMA 3R traffic cabinet per its hardware detail section | Likely |
Fitment records and sources
NY DOT NEMA Traffic Signal Cabinet specification explicitly requires M4 screws for securing terminal and distribution assembly panels within the NEMA 3R traffic cabinet per its hardware detail section
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
How to check the screw before you buy
- Do not confuse metric mounting screws with the 1/4-20 or 3/8-16 tripod threads that cameras and clamps also carry.
- 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.
- 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.
- 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 12 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 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.
- 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
- JCM bill-acceptor manual warns that if the host cabinet mounting bracket is only 2mm thick, standard-length M4 screws will not seat correctly — screw length must be matched to bracket thickness.
- Most HVAC chassis hardware in US-market units is imperial; metric shows up mainly on European-made components.
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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Questions about NEMA TS-2 traffic signal control cabinet (roadside traffic controller cabinet) screws
- What size screw does NEMA TS-2 traffic signal control cabinet (roadside traffic controller cabinet) use?
- M4 × 12 mm for NY DOT NEMA Traffic Signal Cabinet specification explicitly requires M4 screws for securing terminal and distribution assembly panels within the NEMA 3R traffic cabinet per its hardware detail section.
- How long are the screws in NEMA TS-2 traffic signal control cabinet (roadside traffic controller cabinet)?
- The record gives 12 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 NEMA TS-2 traffic signal control cabinet (roadside traffic controller cabinet)?
- 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.