DIN 985Nylon insert lock nutExternal hexagon
DIN 985 M4 Nylon insert lock nut
DIN 985 M4 is a nylon insert lock nut, on a M4 × 0.7 mm metric thread. A full hex nut with a nylon collar that grips the thread and resists vibration loosening. Note that the nylon insert has a temperature limit — above roughly 120 °C it loses its locking effect.
Diameter4 mm
Pitch0.7 mm
Socket size s7 mm
Thickness h6 mm
Height m5 mm
DriveExternal hexagon
Dimensions
- Standard
- DIN 985
- Type
- Nylon insert lock nut
- Size
- M4
- Thread
- M4 × 0.7
- Socket size s
- 7 mm
- Height m
- 5 mm
- Total height h
- 6 mm
- Drive
- External hexagon
Nominal values in millimetres as published in DIN 985. Estimated weight 0.756 g per piece in steel (0.761 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.
Thread data
Full M4 thread pageDesignationM4 × 0.7
Pitch0.7 mm
Major Ø4 mm
Pitch Ø3.55 mm
Minor Ø ext3.14 mm
Tap drillØ 3.3 mm
Other lengthsDIN 985 M4
All M4 specificationsInterchangeability
DIN 985 is catalogued with ISO 10511 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.