Unbrako 103991 Button Socket Cap Screw

Unbrako, 103991, Socket Cap Screw, Button, Measurement System: Imperial, 5/16-18 Thread, 5/8 in Overall Length, Alloy Steel, Black Oxide, 3/16 in Drive, Hex Drive

• Low head streamline design for a smooth, aesthetic appearance, ideally suited for use in materials too thin to countersink and in non-critical loading applications
• Deep, accurate socket for maximum key engagement
• Heat treatment in a controlled atmosphere for maximum uniform strength and surface integrity without brittleness or decarburisation