SAMCON T07 series Ex-d enclosure screw size
M4 / M6 · length not stated in the sources
The screws used on SAMCON T07 series Ex-d enclosure are M4 and M6. None of the sources we found gives an exact length, so measure the original before you order.
There are 2 separate fitment records for it, including M4 x 0.7 hexagon socket cylinder screws (6-8 pcs) fixing the flameproof cover; M3/M4 blind (M4) and M6 x 0.7 hexagon socket cylinder screws (12 pcs) on the larger VA4.x cover variant (M6).
2 of the 2 records are marked confirmed, drawn from 1 source (samcon.eu).
M4 means a 4 mm nominal diameter with a 0.7 mm thread pitch. Imperial look-alike: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same.
SAMCON T07 series Ex-d enclosure 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 | not stated | 0.7 mm | not stated | not stated | M4 x 0.7 hexagon socket cylinder screws (6-8 pcs) fixing the flameproof cover; M3/M4 blind threaded holes for internal component adapters | Confirmed |
| M6 | not stated | 1 mm | not stated | not stated | M6 x 0.7 hexagon socket cylinder screws (12 pcs) on the larger VA4.x cover variant | Confirmed |
Fitment records and sources
M4 x 0.7 hexagon socket cylinder screws (6-8 pcs) fixing the flameproof cover; M3/M4 blind threaded holes for internal component adapters
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
M6 x 0.7 hexagon socket cylinder screws (12 pcs) on the larger VA4.x cover variant
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 M4 screw measures about 4 mm with calipers (usually a hair under). This device also uses M6, so measure each screw rather than assuming they match.
- 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.
- 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 / M6
- 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.
- Festo sensor brackets are named after the sensor interface (DASP-M4-...), but the bracket's own fixing screws are often a different size (M5/M6/M8).
- 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.
- Rack hole threads vary: 10-32 and 12-24 are still common in US racks alongside M6 - check the rail before buying.
More in Electronics, Racks & Enclosures
The same screw also fits
Devices whose records share a thread with SAMCON T07 series Ex-d enclosure, closest length match first.
- Raymarine ST4000+ wheel/tiller autopilot also M4
- Soundbar wall brackets also M4
- Square-hole server rack (cage-nut hardware) also M6
- Rack mounting screw and cage nut set (NRS-M1616-N-50) also M6
- Jukebox PCB standoff/post hardware also M4
- Motorcycle/scooter turn signal indicator mounting bolt also M6
- Rittal VX VX enclosure hinge countersunk Torx screw also M6
- Payter credit-card payment kiosk (used in EV charging/parking payment kiosks) also M4
Questions about SAMCON T07 series Ex-d enclosure screws
- What size screw does SAMCON T07 series Ex-d enclosure use?
- M4 for M4 x 0.7 hexagon socket cylinder screws (6-8 pcs) fixing the flameproof cover; M3/M4 blind threaded holes for internal component adapters; M6 for M6 x 0.7 hexagon socket cylinder screws (12 pcs) on the larger VA4.x cover variant.
- How long are the screws in SAMCON T07 series Ex-d enclosure?
- 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 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 SAMCON T07 series Ex-d enclosure?
- 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.