The M5 size of Square Channel-Steel Washer is dimensioned by GB/T 852. 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.
M5 Dimensional Row (GB/T 852)
| For bolt size | Inner diameter d1 (mm) | Outer diameter d2 (mm) | Thickness t (mm) | Reference standard |
|---|---|---|---|---|
| M5 | 5.3 | 10.0 | 1.0 | ISO 7089 / GB/T 97.1 |
Spanner & Drive for M5 Square Channel-Steel Washer — GB/T 852 (Series 083)
Drive geometry for M5 Square Channel-Steel Washer — GB/T 852 (Series 083) is given by the row above; match the tool to the listed values.
Common Applications for M5 Square Channel-Steel Washer — GB/T 852 (Series 083)
M5 Square Channel-Steel Washer — GB/T 852 (Series 083) are commonly specified for small electronics hardware and precision assemblies.
Installation Tips for M5 Square Channel-Steel Washer — GB/T 852 (Series 083)
- At M5 the joint is sensitive to over-torque — use a torque-limiting driver and check the head doesn't bury into a softer counterpart.
When to Step Up or Down from M5
When the joint preload approaches the proof load of M5 class 8.8, step up to M6 class 8.8 (or move to M5 class 10.9). When the joint is over-specified, M4 often saves weight and cost without losing the safety margin.