The M30 size of Castellated Hex Nut is dimensioned by GB/T 6180 / ISO 7036. 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.
M30 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 |
|---|---|---|---|---|---|---|
| M30 | 3.5 | 46.0 | 50.85 | 36.0 | 7.0 | ISO 7036 / GB/T 6180 |
Spanner & Drive for M30 Castellated Hex Nut — GB/T 6180 / ISO 7036 (Series 048)
Drive geometry for M30 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 M30 Castellated Hex Nut — GB/T 6180 / ISO 7036 (Series 048)
M30 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 M30 Castellated Hex Nut — GB/T 6180 / ISO 7036 (Series 048)
- At M30 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 M30
Pair M30 with the matching M30 bolt or screw, plus a M30 flat washer where required to distribute load on softer materials.