25 degree Super Sharp (SS) point for ease of penetration.""
Manufactured to mechanical specification SAE J78-1979 to achieve a surface hardness up to 650 HV to prevent torque shearing under load and a core hardness of up to 400 HV for improved ductility.
**Features** *25 degree 'Super Sharp' (SS) point for ease of penetration.|*Manufactured to mechanical specification SAE J78-1979 to achieve a surface hardness up to 650 HV to prevent torque shearing under load and a core hardness of up to 400 HV for improved ductility.|*Made from C10-18 steel.|*Plated in zinc 3-5 microns.