M8 Spring Lock Washer (GB/T 93) (GB/T 93 / DIN 127B) are specified by thread size, length and head dimensions. The M8 row from the standard is reproduced below, followed by the drill sizes, spanner size and torque values used when installing this size.
M8 Dimensional Row (GB/T 93 / DIN 127B)
| For bolt size | Inner diameter d1 (mm) | Outer diameter d2 (mm) | Width b (mm) | Thickness t (mm) | Reference standard |
|---|---|---|---|---|---|
| M8 | 8.1 | 14.8 | 2.5 | 2.0 | GB/T 93 / DIN 127B |
Spanner & Drive for M8 Spring Lock Washer (GB/T 93) — GB/T 93 / DIN 127B (Series 081)
Drive geometry for M8 Spring Lock Washer (GB/T 93) — GB/T 93 / DIN 127B (Series 081) is given by the row above; match the tool to the listed values.
Common Applications for M8 Spring Lock Washer (GB/T 93) — GB/T 93 / DIN 127B (Series 081)
M8 Spring Lock Washer (GB/T 93) — GB/T 93 / DIN 127B (Series 081) are commonly specified for general-purpose load-spreading and locking under machine bolts.
Mating Parts for M8
A M8 flat washer pairs with a M8 bolt/screw and matching M8 nut.
When to Step Up or Down from M8
When the joint preload approaches the proof load of M8 class 8.8, step up to M10 class 8.8 (or move to M8 class 10.9). When the joint is over-specified, M6 often saves weight and cost without losing the safety margin.