1B4427 Nut-Hex Fits Caterpillar Models
1B4427 Nut-Hex Fits Caterpillar Models
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One New Aftermarket Replacement Hex Jam Nut for Caterpillar (Cat) Equipment
This aftermarket replacement hex jam nut replaces Caterpillar (Cat) OEM part number 1B4427 (also formatted as 1B-4427). A 1/4"-20 hex jam nut, this fastener is used across a wide range of Caterpillar construction and heavy equipment applications. Hex jam nuts are low-profile hex nuts commonly used in locking assemblies, threaded rod applications, and anywhere a standard-height nut is too tall for the available clearance.
Specifications
- Type: Hex Jam Nut
- Thread Size: 1/4"-20 (UNC)
- Style: Low-profile hex nut
Compatible With
Caterpillar (Cat): This is a general-use Caterpillar hardware fastener used across many Cat machine families including construction, mining, and industrial equipment. Verify fitment against your machine's parts manual using OEM part number 1B4427.
Replaces Part Number(s):
1B4427, 1B-4427
New aftermarket replacement part - not remanufactured, not used.



