On the bench specifying M3 Spring Lock Washer — GB/T 5782 / ISO 4014 (Series 003)? This page gives the controlling dimensions for the M3 size of Spring Lock Washer — GB/T 5782 / ISO 4014 (Series 003) (to GB/T 5782 / ISO 4014).
M3 Dimensional Row (GB/T 5782 / ISO 4014)
| For bolt size | Inner diameter d1 (mm) | Outer diameter d2 (mm) | Width b (mm) | Thickness t (mm) | Reference standard |
|---|---|---|---|---|---|
| M3 | 3.1 | 6.2 | 1.0 | 0.8 | GB/T 93 / DIN 127B |
Spanner & Drive for M3 Spring Lock Washer — GB/T 5782 / ISO 4014 (Series 003)
Drive geometry for M3 Spring Lock Washer — GB/T 5782 / ISO 4014 (Series 003) is given by the row above; match the tool to the listed values.
Common Applications for M3 Spring Lock Washer — GB/T 5782 / ISO 4014 (Series 003)
M3 Spring Lock Washer — GB/T 5782 / ISO 4014 (Series 003) are commonly specified for small electronics hardware and precision assemblies.
Installation Tips for M3 Spring Lock Washer — GB/T 5782 / ISO 4014 (Series 003)
- At M3 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 M3
A M3 flat washer pairs with a M3 bolt/screw and matching M3 nut.
When to Step Up or Down from M3
When the joint preload approaches the proof load of M3 class 8.8, step up to M4 class 8.8 (or move to M3 class 10.9). When the joint is over-specified, M2 often saves weight and cost without losing the safety margin.