Crowcon Xgard Bright fixed gas detector (mining/oil & gas field electronics) screw size
M4 · 6 to 15 mm long
Crowcon Xgard Bright fixed gas detector (mining/oil & gas field electronics) takes M4 metric screws in lengths from 6 to 15 mm.
The record covers manual states the grounding terminal connection is 'secured using an M4 x 6mm screw, a plain washer and a star/lock washer' torqued to 10 N·m; spares list also includes an 'Xgard Bright Spare M4 x 8 Posi Pan Head Screw' and 'Spare/Replacement M4 Earth Stud Assembly' plus M4 threaded hex spacers (10mm and 15mm).
Head and drive, as the source states them: pan head.
This entry is marked confirmed and comes from cadmus.co.uk.
For reference, M4 is 4 mm across the threads at 0.7 mm pitch. The imperial size people confuse it with: #8-32 (4.17 mm) — the standard US PC/rack screw, close but not the same.
Crowcon Xgard Bright fixed gas detector (mining/oil & gas field electronics) screw specifications
One row per fitment record. Head, drive and torque are shown only where the source states them; pitch is the ISO coarse pitch for the thread.
| Thread | Length | Pitch | Head | Drive | Torque | Where it goes | Status |
|---|---|---|---|---|---|---|---|
| M4 | 6–15 mm | 0.7 mm | Pan head | not stated | 10 N·m | Manual states the grounding terminal connection is 'secured using an M4 x 6mm screw, a plain washer and a star/lock washer' torqued to 10 N·m; spares list also includes an 'Xgard Bright Spare M4 x 8 Posi Pan Head Screw' and 'Spare/Replacement M4 Earth Stud Assembly' plus M4 threaded hex spacers (10mm and 15mm)washer / flange face | Confirmed |
Fitment records and sources
Manual states the grounding terminal connection is 'secured using an M4 x 6mm screw, a plain washer and a star/lock washer' torqued to 10 N·m; spares list also includes an 'Xgard Bright Spare M4 x 8 Posi Pan Head Screw' and 'Spare/Replacement M4 Earth Stud Assembly' plus M4 threaded hex spacers (10mm and 15mm)
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
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 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: for pan head screws, measure from under the head to the tip (countersunk heads are the exception: they are measured overall).
- The records span 6–15 mm, which means different positions take different lengths — match each hole to its own screw.
- 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.
Common mix-ups with M4
- 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.
- Grounding-lug screws on Siemens and Beckhoff gear (M4) are earth hardware, not structural mounting screws — don't reuse them to hold a module.
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 Crowcon Xgard Bright fixed gas detector (mining/oil & gas field electronics), closest length match first.
- Midea/Little Swan front-load washer control board technical service guide also M4 × 8 mm
- POM APM-E Series II parking meter mechanism (single-space parking meter) also M4 × 10 mm
- DIN 41612 backplane / rack card retention also M4 × 6–12 mm
- Elo EMV bracket special pan-head screw (Bag G) also M4 × 10 mm
- BYD Battery-Box Premium LVS also M4 × 14 mm
- Rackmount KVM chassis also M4 × 10 mm
- Refrigerator door handle also M4 × 10–15 mm
- SICK BEF-AP-EPA universal sensor adapter bracket also M4 × 10 mm
Questions about Crowcon Xgard Bright fixed gas detector (mining/oil & gas field electronics) screws
- What size screw does Crowcon Xgard Bright fixed gas detector (mining/oil & gas field electronics) use?
- M4 × 6–15 mm for manual states the grounding terminal connection is 'secured using an M4 x 6mm screw, a plain washer and a star/lock washer' torqued to 10 N·m; spares list also includes an 'Xgard Bright Spare M4 x 8 Posi Pan Head Screw' and 'Spare/Replacement M4 Earth Stud Assembly' plus M4 threaded hex spacers (10mm and 15mm).
- How long are the screws in Crowcon Xgard Bright fixed gas detector (mining/oil & gas field electronics)?
- The records range from 6 to 15 mm depending on the position, so match each screw to its own hole.
- 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 Crowcon Xgard Bright fixed gas detector (mining/oil & gas field electronics)?
- 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.
- How tight should the M4 screw on Crowcon Xgard Bright fixed gas detector (mining/oil & gas field electronics) be?
- The source gives 10 N·m for manual states the grounding terminal connection is 'secured using an M4 x 6mm screw, a plain washer and a star/lock washer' torqued to 10 N·m; spares list also includes an 'Xgard Bright Spare M4 x 8 Posi Pan Head Screw' and 'Spare/Replacement M4 Earth Stud Assembly' plus M4 threaded hex spacers (10mm and 15mm).