M12 Wedge / Taper Washer — GB/T 852 (Series 084) is the m12-thread variant of Wedge / Taper Washer — GB/T 852 (Series 084) manufactured to GB/T 852. This page focuses on the data engineers reach for at the bench: dimensional values for the M12 size, the spanner/drive that fits, and the assembly data you need to install it.
M12 Dimensional Row (GB/T 852)
| For bolt size | Inner diameter d1 (mm) | Outer diameter d2 (mm) | Mean thickness t (mm) | Slope | Reference standard |
|---|---|---|---|---|---|
| M12 | 12.5 | 26 | 4.8 | 1:6 | DIN 6917 / GB/T 853 |
Spanner & Drive for M12 Wedge / Taper Washer — GB/T 852 (Series 084)
Drive geometry for M12 Wedge / Taper Washer — GB/T 852 (Series 084) is given by the row above; match the tool to the listed values.
Common Applications for M12 Wedge / Taper Washer — GB/T 852 (Series 084)
M12 Wedge / Taper Washer — GB/T 852 (Series 084) are commonly specified for medium-duty structural joints.
Mating Parts for M12
A M12 flat washer pairs with a M12 bolt/screw and matching M12 nut.
When to Step Up or Down from M12
When the joint preload approaches the proof load of M12 class 8.8, step up to M16 class 8.8 (or move to M12 class 10.9). When the joint is over-specified, M10 often saves weight and cost without losing the safety margin.