M16 Spring Lock Washer (GB/T 5782 / ISO 4014) are specified by thread size, length and head dimensions. The M16 row from the standard is reproduced below, followed by the drill sizes, spanner size and torque values used when installing this size.
M16 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 |
|---|---|---|---|---|---|
| M16 | 16.2 | 27.4 | 4.5 | 4.0 | GB/T 93 / DIN 127B |
Spanner & Drive for M16 Spring Lock Washer — GB/T 5782 / ISO 4014 (Series 003)
Drive geometry for M16 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 M16 Spring Lock Washer — GB/T 5782 / ISO 4014 (Series 003)
M16 Spring Lock Washer — GB/T 5782 / ISO 4014 (Series 003) are commonly specified for medium-duty structural joints.
Mating Parts for M16
A M16 flat washer pairs with a M16 bolt/screw and matching M16 nut.
When to Step Up or Down from M16
When the joint preload approaches the proof load of M16 class 8.8, step up to M20 class 8.8 (or move to M16 class 10.9). When the joint is over-specified, M12 often saves weight and cost without losing the safety margin.