Hexalobular (6 Lobe) socket flat head countersunk tapping screws with cone end type C
ST 2,2; ST 3,9: not included in ISO 14586
Headform Countersunk head
Drive Hexalobular socket
Thread fully threaded
Material execution case-hardened
Surface zinc plated blue
Hardness 450 HV
Standard ISO 14586 C
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.
BN 14066 - DIN 7982 C (Standard withdrawn)
Pozi flat countersunk head tapping screws form Z, with cone end type C - Steel - case-hardened - zinc plated blue
BN 995 - DIN 7982 C (Standard withdrawn)
Phillips flat countersunk head tapping screws form H, with cone end type C - Steel - case-hardened - zinc plated blue