M36 is one of the standard coarse-thread sizes for nylon insert hex lock nut under GB/T 889 / ISO 7040. The sections below reproduce the dimensional row, list the matching tools and hole sizes, and summarize where this size is normally specified.
M36 Dimensional Row (GB/T 889 / ISO 7040)
| Size | Pitch (mm) | Width across flats s (mm) | Width across corners e (mm) | Total height m (mm) | Reference standard |
|---|---|---|---|---|---|
| M36 | 4.0 | 55.0 | 60.79 | 29.0 | ISO 7040 / DIN 985 |
Spanner & Drive for M36 Nylon Insert Hex Lock Nut — GB/T 889 / ISO 7040 (Series 078)
Drive geometry for M36 Nylon Insert Hex Lock Nut — GB/T 889 / ISO 7040 (Series 078) is given by the row above; match the tool to the listed values.
Common Applications for M36 Nylon Insert Hex Lock Nut — GB/T 889 / ISO 7040 (Series 078)
M36 Nylon Insert Hex Lock Nut — GB/T 889 / ISO 7040 (Series 078) are commonly specified for structural joints, flange connections and heavy equipment foundations.
Installation Tips for M36 Nylon Insert Hex Lock Nut — GB/T 889 / ISO 7040 (Series 078)
- 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.

