A nylon insert hex lock nut — gb/t 889 / iso 7040 (series 078 in M5: this guide pulls the row from the standard, adds the assembly numbers an engineer actually uses, and links you straight to a quote.
M5 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 |
|---|---|---|---|---|---|
| M5 | 0.8 | 8.0 | 8.79 | 5.0 | ISO 7040 / DIN 985 |
Spanner & Drive for M5 Nylon Insert Hex Lock Nut — GB/T 889 / ISO 7040 (Series 078)
Drive geometry for M5 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 M5 Nylon Insert Hex Lock Nut — GB/T 889 / ISO 7040 (Series 078)
M5 Nylon Insert Hex Lock Nut — GB/T 889 / ISO 7040 (Series 078) are commonly specified for paired with the same-size screws on PCB hardware, light enclosures and small-scale assemblies.
Installation Tips for M5 Nylon Insert Hex Lock Nut — GB/T 889 / ISO 7040 (Series 078)
- At M5 the joint is sensitive to over-torque — use a torque-limiting driver and check the head doesn't bury into a softer counterpart.
Mating Parts for M5
Pair M5 with the matching M5 bolt or screw, plus a M5 flat washer where required to distribute load on softer materials.
When to Step Up or Down from M5
When the joint preload approaches the proof load of M5 class 8.8, step up to M6 class 8.8 (or move to M5 class 10.9). When the joint is over-specified, M4 often saves weight and cost without losing the safety margin.