1B4518 Nut-Hex Castle Fits Caterpillar Models
1B4518 Nut-Hex Castle Fits Caterpillar Models
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One New Aftermarket Replacement Hex Castle Nut for Caterpillar (Cat) Equipment
This hex castle nut is a direct aftermarket replacement for Caterpillar OEM part number 1B4518. Castle nuts (also called castellated nuts) feature a slotted crown section that works with a cotter pin through a drilled fastener to prevent loosening under vibration -- a critical characteristic in heavy construction and earthmoving equipment applications. This nut is used across a wide range of Caterpillar machinery where secure, positive-locking fastening is required.
Compatible Models
Caterpillar: Fits Caterpillar models -- confirm fitment against your machine's parts manual or serial number prior to ordering, as the 1B-series nut range spans many Cat equipment families including track-type tractors, motor graders, wheel loaders, pipelayers, compactors, and more.
Replaces Part Number(s):
1B4518, 1B-4518
New aftermarket replacement part - not remanufactured, not used.
