Material: Pin stainless steel 1.4542. Mushroom knob and push button stainless steel 1.4305. Balls stainless steel 1.4125. Compression spring stainless steel. Version: All stainless steel parts passivated. Pin hardened to min. 40 HRC. Balls hardened to 58 +4 HRC. Note: Ball lock pins are used for quick and easy fastening and joining of parts and work pieces. The two balls are disengaged by pressing the push button and the pin can be slipped into holes in the work pieces. Release the button to lock the balls and secure the connection. An option for connecting a retaining cable is provided. Shearing force double shear (F) = S · τ aB max. Accessories: Safety spiral cable K0367.10200 Retaining cable with loop K0367. Key ring K0367.15/19/23 Bushing for ball lock pins K0724.