M12 Nylon Insert Hex Lock Nut (Type 2) (GB/T 6182 / ISO 10513) are specified by thread size, length and head dimensions. The M12 row from the standard is reproduced below, followed by the drill sizes, spanner size and torque values used when installing this size.
M12 Dimensional Row (GB/T 6182 / ISO 10513)
| Size | Pitch (mm) | Width across flats s (mm) | Width across corners e (mm) | Total height m (mm) | Reference standard |
|---|---|---|---|---|---|
| M12 | 1.75 | 18.0 | 20.03 | 12.0 | ISO 7040 / DIN 985 |
Spanner & Drive for M12 Nylon Insert Hex Lock Nut (Type 2) — GB/T 6182 / ISO 10513 (Series 051)
Drive geometry for M12 Nylon Insert Hex Lock Nut (Type 2) — GB/T 6182 / ISO 10513 (Series 051) is given by the row above; match the tool to the listed values.
Common Applications for M12 Nylon Insert Hex Lock Nut (Type 2) — GB/T 6182 / ISO 10513 (Series 051)
M12 Nylon Insert Hex Lock Nut (Type 2) — GB/T 6182 / ISO 10513 (Series 051) are commonly specified for medium-duty structural joints and motor / chassis mounting.
Mating Parts for M12
Pair M12 with the matching M12 bolt or screw, plus a M12 flat washer where required to distribute load on softer materials.
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.