EN
BN 991 - DIN 7973 C - ~ISO 1483
Headform：Oval countersunk
Drive：Slot
Thread：fully threaded
Material：Steel
Material execution：case-hardened
Surface：zinc plated blue
Hardness：450 HV
- Parameter
Parameter
Slotted oval countersunk head tapping screws with cone end type C Steel - case-hardened - zinc plated blue
