EN
BN 30904 - BS 4174
Headform：Button with collar
Drive：Cross recess Z (Pozidriv)
Thread：fully threaded
Material：Steel
Material execution：case-hardened
Surface：zinc plated blue
Hardness：450 HV
- Parameter
Parameter
Pozi pan head tapping screws with collar, form Z and cone end type C Steel - case-hardened - zinc plated blue
