A4-316 St/St Lock Nuts DIN 439B - M12 x 1.75

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 DIN 439.
• A4 stainless steel material, offering superb resistance to corrosion. Ideal for marine applications.