M1 Pan Head Screws (ISO 1207 / ISO 7045 / DIN 7985) are specified by thread size, length and head dimensions. The M1 row from the standard is reproduced below, followed by the drill sizes, spanner size and torque values used when installing this size.
M1 Dimensional Row (ISO 1207 / ISO 7045 / DIN 7985)
| Size | Pitch (mm) | Head diameter dk (mm) | Head height k (mm) | Cross recess | Reference standard |
|---|---|---|---|---|---|
| M1 | 0.25 | 2.0 | 0.8 | PH0 | ISO 1207 / ISO 7045 / DIN 7985 |
Spanner & Drive for M1 Pan Head Screws
M1 Pan Head Screws use a PH0 cross recess. Match the driver bit to the recess (Phillips PH / Pozi PZ are NOT interchangeable).
Common Applications for M1 Pan Head Screws
M1 Pan Head Screws are commonly specified for electronics, PCB hardware, optical mounts and small-scale machinery.
Installation Tips for M1 Pan Head Screws
- Pozidriv (PZ) drivers ride out of Phillips (PH) recesses and vice versa — confirm the recess marking on the head before assembly.
- For automated assembly, an ACR (Anti-Cam-Out Ribs) or torx-equivalent driver gives noticeably longer bit life than plain PH.
- At M1 the joint is sensitive to over-torque — use a torque-limiting driver and check the head doesn't bury into a softer counterpart.
Mating Parts for M1
For M1, pair with a M1 hex nut (ISO 4032 / DIN 934) and, where used, a M1 flat washer (ISO 7089 / DIN 125A) under the head and under the nut.