For Nyloc Lock Nuts, the M8 thread sits in the small-to-medium range of the catalog and is one of the most-asked nyloc lock nuts in this family. The dimensional and assembly data follow.
M8 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 |
|---|---|---|---|---|---|---|---|
| M8 | 1.25 | 13.0 | 14.38 | 8.0 | 6.14 | DIN 985 / ISO 7040 | With nylon insert, single use |
Spanner & Drive for M8 Nyloc Lock Nuts
Drive geometry for M8 Nyloc Lock Nuts is given by the row above; match the tool to the listed values.
Common Applications for M8 Nyloc Lock Nuts
M8 Nyloc Lock Nuts are commonly specified for general-purpose joints in machinery, fixturing and equipment frames.
Mating Parts for M8
Pair M8 with the matching M8 bolt or screw, plus a M8 flat washer where required to distribute load on softer materials.
When to Step Up or Down from M8
When the joint preload approaches the proof load of M8 class 8.8, step up to M10 class 8.8 (or move to M8 class 10.9). When the joint is over-specified, M6 often saves weight and cost without losing the safety margin.