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Serrated hex flange head cap screws

BN 20226

~DIN 6921

(Standard withdrawn)



Headform
Headform Hexagonal with flange
Drive
Drive Hexagon
Thread
Thread fully threaded
Material
Material Steel
Property class
Property class 8.8
Surface
Surface zinc plated with thick layer passivation

All features


Standard

~DIN 6921 (Standard withdrawn)

Features

Headform
Headform Hexagonal with flange
Drive
Drive Hexagon
Thread
Thread fully threaded
Material
Material Steel
Property class
Property class 8.8
Surface
Surface zinc plated with thick layer passivation

Functional principle

1. Tightening: teeth penetrate the surface
2. Loosening: teeth shear off material
3. Surface condition after loosening

Illustration functional principle