DIN 439Hexagon thin nutExternal hexagon
DIN 439 M5 Hexagon thin nut
DIN 439 M5 is a hexagon thin nut, on a M5 × 0.8 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.
Diameter5 mm
Pitch0.8 mm
Socket size s8 mm
Height m2.7 mm
DriveExternal hexagon
Dimensions
- Standard
- DIN 439
- Type
- Hexagon thin nut
- Size
- M5
- Thread
- M5 × 0.8
- Socket size s
- 8 mm
- Height m
- 2.7 mm
- Drive
- External hexagon
Nominal values in millimetres as published in DIN 439. Estimated weight 0.465 g per piece in steel (0.468 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.
Thread data
Full M5 thread pageDesignationM5 × 0.8
Pitch0.8 mm
Major Ø5 mm
Pitch Ø4.48 mm
Minor Ø ext4.02 mm
Tap drillØ 4.2 mm
Other lengthsDIN 439 M5
All M5 specificationsInterchangeability
DIN 439 is catalogued with ISO 4035 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.