M5 Nyloc Lock Nuts are manufactured to DIN 985 / ISO 7040 with a coarse thread pitch of 0.8 mm. This page lists the controlling dimensions for the M5 size — head geometry, width across flats, matching spanner size — together with the clearance hole, tapping drill and tightening torque used at assembly.
M5 Dimensional Row (DIN 985 / ISO 7040)
| Size | Pitch (mm) | Width across flats s (mm) | Width across corners e min (mm) | Total height m (mm) | Metal height (mm) | Reference standard | Notes |
|---|---|---|---|---|---|---|---|
| M5 | 0.8 | 8.0 | 8.79 | 5.0 | 3.7 | DIN 985 / ISO 7040 | With nylon insert, single use |
Spanner & Drive for M5 Nyloc Lock Nuts
Drive geometry for M5 Nyloc Lock Nuts is given by the row above; match the tool to the listed values.
Common Applications for M5 Nyloc Lock Nuts
M5 Nyloc Lock Nuts are commonly specified for paired with the same-size screws on PCB hardware, light enclosures and small-scale assemblies.
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.