Selecting General Flat Washer — GB/T 97.2 / ISO 7090 (Series 088), M5, in GB/T 97.2 / ISO 7090: the dimensional row from the standard plus the tools and hole sizes follow. Use them with the technical drawing below — the drawing redraws to the exact size you pick.
M5 Dimensional Row (GB/T 97.2 / ISO 7090)
| 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 General Flat Washer — GB/T 97.2 / ISO 7090 (Series 088)
Drive geometry for M5 General Flat Washer — GB/T 97.2 / ISO 7090 (Series 088) is given by the row above; match the tool to the listed values.
Common Applications for M5 General Flat Washer — GB/T 97.2 / ISO 7090 (Series 088)
M5 General Flat Washer — GB/T 97.2 / ISO 7090 (Series 088) are commonly specified for small electronics hardware and precision assemblies.
Installation Tips for M5 General Flat Washer — GB/T 97.2 / ISO 7090 (Series 088)
- 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.
Mating Parts for M5
A M5 flat washer pairs with a M5 bolt/screw and matching M5 nut.
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.