ISO 4161FlangeExternal hexagon
ISO 4161 M5 Flange
ISO 4161 M5 is a flange nut, on a M5 × 0.8 mm metric thread. A hex nut with a wide circular flange that spreads the clamping load and behaves like an integrated washer. Speeds up assembly versus nut + washer.
Diameter5 mm
Pitch0.8 mm
Socket size s8 mm
Height m5 mm
Flange Ø dc11.8 mm
HeadFlange
DriveExternal hexagon
Dimensions
- Standard
- ISO 4161
- Type
- Flange nut
- Size
- M5
- Thread
- M5 × 0.8
- Socket size s
- 8 mm
- Height m
- 5 mm
- Flange diameter dc
- 11.8 mm
- Drive
- External hexagon
- Head
- Flange
Nominal values in millimetres as published in ISO 4161. Estimated weight 0.861 g per piece in steel (0.866 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