SAFETY SCREW PAD

W-0274, galvanized steel 8.8, blue passivated (A2K)
The locking teeth are pressed into the material of the element being screwed and block the incoming unlocking torque in the unscrewing direction
The material being screwed must have a much lower hardness compared to the screw (surface hardness of the screw: min. 250 HV)
Product particularly suitable for short clamping lengths.