nVent SCHROFF instrument/enclosure collar panhead screw screw size
M2.5 · 12.3 mm long
The screws used on nVent SCHROFF instrument/enclosure collar panhead screw are M2.5, 12.3 mm long.
Where it is used: assembly of partial-width front panels in electronic instrument enclosures used in lab/broadcast rack equipment.
This entry is marked confirmed and comes from nvent.com.
For reference, M2.5 is 2.5 mm across the threads at 0.45 mm pitch. The imperial size people confuse it with: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in.
nVent SCHROFF instrument/enclosure collar panhead screw 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 |
|---|---|---|---|---|---|---|
| M2.5 | 12.3 mm | 0.45 mm | not stated | not stated | assembly of partial-width front panels in electronic instrument enclosures used in lab/broadcast rack equipment | Confirmed |
Fitment records and sources
assembly of partial-width front panels in electronic instrument enclosures used in lab/broadcast rack equipment
pitch 0.45 mm · tap 2.05 mm · clearance 2.9 mm · PH1 / Torx T8
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 M2.5 screw measures about 2.5 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.45 mm from one thread crest to the next (22.22 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 12.3 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 M2.5 heads take PH1 for Phillips and T8 for Torx, and a 2 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 M2.5 is about 45-70 N·cm into metal threads and 20-35 N·cm into plastic bosses; snug it up and stop.
Common mix-ups with M2.5
- M2.5 pitch is 0.45mm vs M3's 0.5mm and M2's 0.4mm — forcing the wrong one strips plastic bosses instantly.
- M2.5 and M3 look the same to the naked eye — you need calipers on the shank to tell them apart.
More in Electronics, Racks & Enclosures
19-inch rack cage nut (light equipment)19-inch rack cage nut (metric square-hole rails)19-inch rack cage nut (mid size)19-inch rack cage nut and panel screw19-inch rack network and AV gear19-inch rack-mount audio/AV equipment19-inch server racks19in / 10in server rack cage nut and screw kit19in equipment rack (Kendall Howard cage nuts)19in rack cage nuts (alternate metric)19in rack cage nuts (metric)1U rack-mount PDU (American Denki)
Browse all 357 in Electronics, Racks & Enclosures →The same screw also fits
Devices whose records share a thread with nVent SCHROFF instrument/enclosure collar panhead screw, closest length match first.
- NVG shroud / helmet bracket hardware (Gentex-style 3-hole) also M2.5 × 12.3 mm
- Wurth Elektronik WA-SPAIE plastic spacer stud also M2.5 × 12.3 mm
- Wurth Elektronik WA-SSTIE steel spacer stud also M2.5 × 12.3 mm
- Tripod head quick-release plate lock also M2.5 × 12.3 mm
- Motorola APX 5000 / APX 6000 portable radio also M2.5 × 12.3 mm
- Raspberry Pi (Model B+ through Pi 4/Pi 5 form factor boards) also M2.5 × 12.3 mm
- DIN 912 socket-head cap screw also M2.5 × 12.3 mm
- Axial SCX10 III RC crawler, countersunk and cap screws also M2.5 × 12.3 mm
Questions about nVent SCHROFF instrument/enclosure collar panhead screw screws
- What size screw does nVent SCHROFF instrument/enclosure collar panhead screw use?
- M2.5 × 12.3 mm for assembly of partial-width front panels in electronic instrument enclosures used in lab/broadcast rack equipment.
- How long are the screws in nVent SCHROFF instrument/enclosure collar panhead screw?
- The record gives 12.3 mm. Measure the original from under the head (overall for a countersunk head) to confirm before ordering.
- What is the thread pitch of an M2.5 screw?
- 0.45 mm (coarse), which is the standard pitch for M2.5 machine screws; a 0.35 mm fine pitch exists but is uncommon. The tap drill is 2.05 mm and the normal clearance hole is 2.9 mm.
- What screwdriver do I need for nVent SCHROFF instrument/enclosure collar panhead screw?
- The sources do not name the drive. For M2.5, Phillips heads normally take PH1 and Torx heads T8; socket heads take a 2 mm hex key.
- Can I use an imperial screw instead of M2.5?
- No. Imperial look-alike: #3-48 / #4-40 (2.51 / 2.84 mm) — #4-40 is the common US stand-in and it will NOT thread in. Use a true M2.5 screw so it does not cross-thread or strip the hole.