NUT - HEX JAM 7/8-14 (Mitsubishi MB1201904)

A damaged hex jam nut can compromise the security of a threaded fastener assembly. During inspection, a loose or worn nut may indicate improper torque or thread wear. The nut's plain mechanical function is to lock a fastener in place by providing a secondary jam action against a primary nut. A concrete generic failure consequence is that a failed jam nut can allow the primary fastener to loosen under vibration, leading to component separation. This aftermarket replacement part references the Mitsubishi catalog and carries the cross-reference number MB1201904. It is a 7/8-14 hex jam nut, a type of hardware nut used in threaded connections. Verify the serial number or application, then call (562) 693-7748.

Part number variants: MB1201904, mb1201904