The M1.6 size of Phillips Countersunk Screws is dimensioned by ISO 7046 / DIN 965. The tables below give the dimensional row from the standard, the drill and spanner sizes that go with it, and the assembly torque per property class. The technical drawing on this page redraws to the exact values selected.
M1.6 Dimensional Row (ISO 7046 / DIN 965)
| Size | Pitch (mm) | Head diameter dk (mm) | Head height k (mm) | Cross recess | Countersink angle (deg) | Reference standard |
|---|---|---|---|---|---|---|
| M1.6 | 0.35 | 3.0 | 0.96 | PH0 | 90 | ISO 7046 / DIN 965 |
Spanner & Drive for M1.6 Phillips Countersunk Screws
The hex socket for M1.6 Phillips Countersunk Screws is shown in the spec table — use the matching Allen / hex key (an ISO 2936 hex key set covers the full range). A T-handle Allen key gives the best feel for setting preload by feel; for production work use a torque-controlled driver.
Common Applications for M1.6 Phillips Countersunk Screws
M1.6 Phillips Countersunk Screws are commonly specified for electronics, PCB hardware, optical mounts and small-scale machinery.
Installation Tips for M1.6 Phillips Countersunk Screws
- Use a quality Allen key fully seated in the socket — partial engagement is the most common cause of stripped sockets at this size.
- For countersunk and button-head variants, chamfer the through-hole to seat the head flush without preloading the head/shank fillet.
- At M1.6 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 M1.6
For M1.6, pair with a M1.6 hex nut (ISO 4032 / DIN 934) and, where used, a M1.6 flat washer (ISO 7089 / DIN 125A) under the head and under the nut.