Dimensional and assembly data for M36 Castellated Hex Nut to GB/T 6180 / ISO 7036. Includes head size and width across flats, clearance-hole and tapping-drill diameters, tightening torque per property class, and the sizes to step up or down to when the joint requires it.
M36 Dimensional Row (GB/T 6180 / ISO 7036)
| Size | Pitch (mm) | Width across flats s (mm) | Width across corners e (mm) | Total height m (mm) | Slot width (mm) | Reference standard |
|---|---|---|---|---|---|---|
| M36 | 4.0 | 55.0 | 60.79 | 43.0 | 8.0 | ISO 7036 / GB/T 6180 |
Spanner & Drive for M36 Castellated Hex Nut — GB/T 6180 / ISO 7036 (Series 048)
Drive geometry for M36 Castellated Hex Nut — GB/T 6180 / ISO 7036 (Series 048) is given by the row above; match the tool to the listed values.
Common Applications for M36 Castellated Hex Nut — GB/T 6180 / ISO 7036 (Series 048)
M36 Castellated Hex Nut — GB/T 6180 / ISO 7036 (Series 048) are commonly specified for structural joints, flange connections and heavy equipment foundations.
Installation Tips for M36 Castellated Hex Nut — GB/T 6180 / ISO 7036 (Series 048)
- At M36 the stretch in the bolt becomes the controlling factor — for critical joints, use angle-controlled or stretch-controlled tightening instead of pure torque.
Mating Parts for M36
Pair M36 with the matching M36 bolt or screw, plus a M36 flat washer where required to distribute load on softer materials.

