NUT - CASTELLATED (Clark CL18631)

A damaged castellated nut can compromise the security of a pinned fastener assembly. During inspection, a loose or worn nut may indicate that the cotter pin slot is no longer properly aligned. This aftermarket replacement part references Clark as the OE maker and cross-references part number CL18631. The nut's primary function is to secure a clevis pin or shaft by aligning a slot with a cross-hole for a cotter pin. A common failure consequence is that a missing or stripped nut allows the pin to walk out, leading to sudden component separation. Keeping a castellated nut in sound condition helps maintain the intended preload on the threaded joint. Verify the serial number or application, then call (562) 693-7748. This item ships at approximately 8.34 POUNDS.

Part number variants: CL18631, cl18631