M1.6 Cheese Head Screws (ISO 7048 / DIN 7985) are specified by thread size, length and head dimensions. The M1.6 row from the standard is reproduced below, followed by the drill sizes, spanner size and torque values used when installing this size.
M1.6 Dimensional Row (ISO 7048 / DIN 7985)
| Size | Pitch (mm) | Head diameter dk (mm) | Head height k (mm) | Cross recess | Reference standard |
|---|---|---|---|---|---|
| M1.6 | 0.35 | 3.0 | 1.6 | PH0 | ISO 7048 / DIN 7985 (cross) / ISO 1207 (slotted) |
Spanner & Drive for M1.6 Cheese Head Screws
M1.6 Cheese Head Screws use a PH0 cross recess. Match the driver bit to the recess (Phillips PH / Pozi PZ are NOT interchangeable).
Hole Sizes for M1.6
| Coarse-thread pitch (ISO 724) | 0.35 mm |
|---|---|
| Through-hole / clearance (ISO 273 medium) | 1.8 mm |
| Tapping drill, coarse thread | 1.25 mm |
Tightening Torque for M1.6
| Class 8.8 (dry, ~µ 0.125) | ≈ 0.2 Nm |
|---|---|
| Class 10.9 (dry, ~µ 0.125) | ≈ Nm |
| Class 12.9 (dry, ~µ 0.125) | ≈ 0.3 Nm |
Indicative dry-joint values. Lubrication can lower the required torque by 15–25%. Always confirm against the joint design, especially when going up a strength class.
Proof Load & Strength for M1.6
| Tensile stress area As (ISO 724) | 1.3 mm² |
|---|---|
| Proof load, class 8.8 | 0.7 kN |
| Proof load, class 12.9 | 1.2 kN |
| Min. ultimate tensile load, class 8.8 | 1 kN |
Proof load = tensile stress area × the proof stress Sp of the class, per ISO 898-1 — Sp is a lower figure than the yield stress Rp0.2 and the two are not interchangeable. The stress area is computed from this size's own diameter and pitch, so a fine-pitch designation gives the fine-pitch figure. Design the joint so the working preload stays below the proof load of the class selected.
Installation Tips for M1.6 Cheese 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 M1.6 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.
Custom manufacturing · Made to drawing
Need cheese head screws in a size this table does not list?
This page covers M1.6 cheese head screws. Head form and drive can be specified to the assembly rather than to a standard: a larger bearing face, a security drive, or a socket sized for the tool already on the bench. Made by cold heading or warm forging.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
