The M16 size of Flat Plain Washer (GB/T 95) is dimensioned by GB/T 97.1 / ISO 7089. 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.
M16 Dimensional Row (GB/T 97.1 / ISO 7089)
| For bolt size | Inner diameter d1 (mm) | Outer diameter d2 (mm) | Thickness t (mm) | Reference standard |
|---|---|---|---|---|
| M16 | 17.0 | 30.0 | 3.0 | ISO 7089 / GB/T 97.1 |
Spanner & Drive for M16 Flat Plain Washer (GB/T 95) — GB/T 97.1 / ISO 7089 (Series 086)
Drive geometry for M16 Flat Plain Washer (GB/T 95) — GB/T 97.1 / ISO 7089 (Series 086) is given by the row above; match the tool to the listed values.
Common Applications for M16 Flat Plain Washer (GB/T 95) — GB/T 97.1 / ISO 7089 (Series 086)
M16 Flat Plain Washer (GB/T 95) — GB/T 97.1 / ISO 7089 (Series 086) 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.