DIN 439Hexagon thin nutExternal hexagon
DIN 439 M8 Hexagon thin nut
DIN 439 M8 is a hexagon thin nut, on a M8 × 1 mm metric thread. A low profile hex nut used as a lock nut against a full nut, or where axial space is tight. Because it carries fewer threads it is not rated for full service load on its own.
Diameter8 mm
Pitch1 mm
Socket size s13 mm
Height m4 mm
DriveExternal hexagon
Dimensions
- Standard
- DIN 439
- Type
- Hexagon thin nut
- Size
- M8
- Thread
- M8 × 1
- Socket size s
- 13 mm
- Height m
- 4 mm
- Drive
- External hexagon
Nominal values in millimetres as published in DIN 439. Estimated weight 1.868 g per piece in steel (1.88 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.
Thread data
Full M8 thread pageDesignationM8 × 1 fine
Pitch1 mm
Major Ø8 mm
Pitch Ø7.35 mm
Minor Ø ext6.77 mm
Tap drillØ 7 mm
Other lengthsDIN 439 M8
All M8 specificationsInterchangeability
DIN 439 is catalogued with ISO 4035 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.