Plain En 1661 Cold Forged Toothed Flange Nuts With Serration

DIN EN 1661 FLANGE NUTS

Hex Flange Lock Nut

FLANGE NUTS. Flange nuts are hex nuts with a bottom circular flange that is larger than their top hex section. There are two types commonly available: flange lock nuts, which are prevailing torque type lock nuts, and serrated flange nuts, which are free spinning but have a serrated bearing surface to grip the mating surface.

Specification

DIN 6923 - Hexagon nuts with flange

Current norm: DIN EN 19661
Equivalent norms: ISO 4161; EU 1661;

Legend:

s - size of the hexagon
e - the diameter of the circumscribed circle (not less than)
m - height of the nut
d - the nominal diameter of the thread
dc - outer diameter of the ring
dw - contact surface diameter
r - radius

Makings:

Steel:6, 8, 10
Stainless: A2 A4
Plastic: -
Non Ferrous: -
Thread: 6G

Notes:

Table according to DIN 6923:

dimensions in mm

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