DIN rail terminal block (8x12mm series) screw size
M5 · length not stated in the sources
If you are replacing a screw on DIN rail terminal block (8x12mm series), the thread is M5. None of the sources we found gives an exact length, so measure the original before you order.
Where it is used: larger brass terminal blocks use M5 screw terminals.
This entry is marked confirmed and comes from viox.com.
An M5 screw is 5 mm in diameter with a 0.8 mm pitch, tapped with a 4.2 mm drill; imperial look-alike: #10-32 (4.83 mm) — the other common rack thread; check before mixing.
DIN rail terminal block (8x12mm series) 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 |
|---|---|---|---|---|---|---|
| M5 | not stated | 0.8 mm | not stated | not stated | Larger brass terminal blocks use M5 screw terminals | Confirmed |
Fitment records and sources
Larger brass terminal blocks use M5 screw terminals
pitch 0.8 mm · tap 4.2 mm · clearance 5.5 mm · PH2 / Torx T25
How to check the screw before you buy
- On vehicles and bikes, use the original strength class and finish; outdoor hardware is usually stainless or coated to resist corrosion.
- Diameter: across the threads an M5 screw measures about 5 mm with calipers (usually a hair under). If yours measures noticeably more or less, it is a different thread.
- Pitch: 0.8 mm from one thread crest to the next (12.5 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 M5 heads take PH2 for Phillips and T25 for Torx, and a 4 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 M5 is about 4.0-6.0 N·m into metal threads and 1.5-2.5 N·m into plastic bosses; snug it up and stop.
Common mix-ups with M5
- Truss and stage-light clamps use M8 or M10 bolts depending on tube diameter — larger than anything in this database, so don't substitute an M6.
- Wheelchair and mobility OEM screws specify an exact standard and strength class (ISO 7045 CL4.8, ISO 4762 CL12.9). Matching only the thread size can cause a failure under load.
More in Vehicles, Marine & Mobility
The same screw also fits
Devices whose records share a thread with DIN rail terminal block (8x12mm series), closest length match first.
- Xiaomi M365 / Ninebot deck cover also M5
- E-scooter deck & folding covers also M5
- Honeywell Thor VM1 vehicle-mount dock also M5
- E-bike controller mounting plate also M5
- Bike kickstand plates also M5
- Stem faceplate bolts also M5
- Shimano rear derailleur pulley bolt also M5
- EVBox Troniq Compact Modular also M5
Questions about DIN rail terminal block (8x12mm series) screws
- What size screw does DIN rail terminal block (8x12mm series) use?
- M5 for larger brass terminal blocks use M5 screw terminals.
- How long are the screws in DIN rail terminal block (8x12mm series)?
- 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 M5 screw?
- 0.8 mm (coarse), which is the standard pitch for M5 machine screws; a 0.5 mm fine pitch exists but is uncommon. The tap drill is 4.2 mm and the normal clearance hole is 5.5 mm.
- What screwdriver do I need for DIN rail terminal block (8x12mm series)?
- The sources do not name the drive. For M5, Phillips heads normally take PH2 and Torx heads T25; socket heads take a 4 mm hex key.
- Can I use an imperial screw instead of M5?
- No. Imperial look-alike: #10-32 (4.83 mm) — the other common rack thread; check before mixing. Use a true M5 screw so it does not cross-thread or strip the hole.