ISO 4161FlangeExternal hexagon
ISO 4161 M8 Flange
ISO 4161 M8 is a flange nut, on a M8 × 1 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.
Diameter8 mm
Pitch1 mm
Socket size s13 mm
Height m8 mm
Flange Ø dc17.9 mm
HeadFlange
DriveExternal hexagon
Dimensions
- Standard
- ISO 4161
- Type
- Flange nut
- Size
- M8
- Thread
- M8 × 1
- Socket size s
- 13 mm
- Height m
- 8 mm
- Flange diameter dc
- 17.9 mm
- Drive
- External hexagon
- Head
- Flange
Nominal values in millimetres as published in ISO 4161. Estimated weight 3.737 g per piece in steel (3.76 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