Version:
Forged from high quality steel, internally bevelled for easy fitting to bolt heads. Internal square to DIN 3120.
Optimum grain orientation due to special forging process. Close tolerance sockets with AS drive profile protect corners of bolt head. Hardened in an oil bath, stress-relieved and distortion-free for a precision fit. Smoothed finish.
Standard:
DIN 3124
Material:
HPQ® high performance steel, non-flaking chrome-plated over nickel.