The M24 size of Hex Nut is dimensioned by GB/T 41 / ISO 4034. 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.
M24 Dimensional Row (GB/T 41 / ISO 4034)
| Size | Pitch (mm) | Width across flats s (mm) | Width across corners e (mm) | Nut height m (mm) | Reference standard |
|---|---|---|---|---|---|
| M24 | 3.0 | 36.0 | 39.98 | 21.5 | ISO 4032 / GB/T 6170 |
Spanner & Drive for M24 Hex Nut — GB/T 41 / ISO 4034 (Series 060)
M24 Hex Nut — GB/T 41 / ISO 4034 (Series 060) have a width across flats of 36.0 mm — fit a 36.0 mm open-ended spanner or socket. Use a 6-point socket for tight clearances and to reduce rounding; for repeated assembly choose a torque wrench so the joint preload is repeatable.
Common Applications for M24 Hex Nut — GB/T 41 / ISO 4034 (Series 060)
M24 Hex Nut — GB/T 41 / ISO 4034 (Series 060) are commonly specified for structural joints, flange connections and heavy equipment foundations.
Installation Tips for M24 Hex Nut — GB/T 41 / ISO 4034 (Series 060)
- Use a 6-point socket where access allows — 12-point sockets are more prone to rounding the corners on smaller sizes.
- On flanged or serrated variants, do NOT add a separate flat washer — the flange already spreads the load and the washer can defeat the locking serrations.
- At M24 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 M24
Pair M24 with the matching M24 bolt or screw, plus a M24 flat washer where required to distribute load on softer materials.