BN 20094 - Flat countersunk head screws with Pozidriv cross recess form Z
KA22: countersunk head geometry with reinforcement taper.
Headform Countersunk head
Drive Cross recess Z (Pozidriv)
Thread fully threaded
Material execution heat-treated
Surface zinc plated blue
Hardness 380 HV
Quenched and tempered fasteners ≥ 360 HV and tempered case-hardened fasteners with electroplated coatings: Susceptible to hydrogen embrittlement!
Further notice to residual risks can be found in the introduction section.