LOCKWASHER (Yale YT030011011)

A worn lockwasher can allow threaded fasteners to loosen under vibration. This aftermarket replacement part references the Yale catalog number YT030011011. A lockwasher is a type of hardware washer that creates tension between a nut and the mating surface. Its plain mechanical function is to resist rotational loosening by biting into the fastener and the joint. A common failure consequence is that a missing or crushed lockwasher leads to progressive fastener back-out. During reassembly, always install a new lockwasher to maintain clamping force. Verify the serial number or application, then call (562) 693-7748.

Part number variants: YT030011011, yt030011011