Siemens SIMATIC S7-1500 DIN rail adapter screw size
M4 · length not stated in the sources
Our records put Siemens SIMATIC S7-1500 DIN rail adapter on M4 screws. None of the sources we found gives an exact length, so measure the original before you order.
The record covers standard rail adapter mounting hardware.
This entry is marked reported and comes from docs.tia.siemens.cloud.
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.
Siemens SIMATIC S7-1500 DIN rail adapter 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 | Standard rail adapter mounting hardware | Reported |
Fitment records and sources
Standard rail adapter mounting hardware
pitch 0.7 mm · tap 3.3 mm · clearance 4.5 mm · PH2 / Torx T20
How to check the screw before you buy
- Where the manufacturer publishes a torque value, use a torque driver rather than feel.
- 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.
- 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
- Grounding-lug screws on Siemens and Beckhoff gear (M4) are earth hardware, not structural mounting screws — don't reuse them to hold a module.
- Not all telescope/finder hardware is metric — Celestron Edge/NexStar SE finder-shoe and dovetail screws are reported as 8/32 (imperial UNC), so metric M4/M5 fitments cannot be assumed across all Celestron products; must check per accessory/vintage.
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Devices whose records share a thread with Siemens SIMATIC S7-1500 DIN rail adapter, closest length match first.
- Winter mechanical flight instruments (glider panel) also M4
- LXNAV V8 vario instrument screw also M4
- Bosch Active/Performance Line E-Bike Motor also M4
- Drawer slide rails also M4
- Motorcycle fairing panels also M4
- Scope / rail mount base screws (metric) also M4
- Segway-Ninebot Chassis/body hex countersunk screw (part 01.12.0411.00) also M4
- Zebra VC8X vehicle-mount computer ProClip AMPS plate also M4
Questions about Siemens SIMATIC S7-1500 DIN rail adapter screws
- What size screw does Siemens SIMATIC S7-1500 DIN rail adapter use?
- M4 for standard rail adapter mounting hardware.
- How long are the screws in Siemens SIMATIC S7-1500 DIN rail adapter?
- 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 Siemens SIMATIC S7-1500 DIN rail adapter?
- 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.