Grade 1 UNC Lock Nuts BS 1768 S/Col - 5/8"-11

Used in pairs, lock nuts are applied to a matching male thread (examples include bolts, set screws and machine screws) and are a simple means of resisting vibration by tightening up against one another.

• Hexagon fits corresponding sockets and spanners.
• Conforms to BS 1768.
• Unified National Coarse (UNC) thread.
• Grade 1 steel.
• Self-colour finish.