2K4973 Nut-Self Locking Fits Caterpillar Models

One New Aftermarket Replacement Self-Locking Nut for Caterpillar (Cat) Equipment

This aftermarket replacement self-locking nut (locknut) replaces Caterpillar (Cat) OEM part number 2K4973. It is a general-purpose hardware fastener used across a wide range of Caterpillar construction and agricultural equipment assemblies, including guard assemblies, seat suspension assemblies, and numerous other structural and mechanical applications throughout the machine.

Specifications

• Part Type: Self-Locking Nut (Locknut)
• Weight: 0.02 lbs.
• Dimensions: 2.8 in. x 2.8 in. x 2.4 in.

Compatible Models

Caterpillar Motor Graders: 140G

Caterpillar Excavators: 173B, 183B, 215, 215B, 215D, 225, 225D, 227, 228, 229, 231D, 235, 235B, 235C, 245, 245B, 245D

Caterpillar Skid Steer Loaders: 216, 216B, 216B3, 226B, 226B3, 232B, 236, 236B, 236B3, 236D, 242B, 242B3, 242D, 246C, 246D, 247

Caterpillar Backhoe Loaders: 414E, 416B, 416C, 416D, 416E, 416F, 420D, 420E, 420F, 422E, 422F, 424D, 426C, 428B, 428C, 428D, 428E, 428F, 430D, 430E, 430F, 432D, 432E, 432F, 434E, 434F, 436C, 438C, 438D, 442D, 442E, 444E, 444F, 446B, 446D, 450E, 450F

Caterpillar Challenger / Agricultural Tractors: 35, 45, 55, 65, 65C, 65E, 70C, 75, 75C, 75D, 75E, 85C, 85D, 85E, 95E, MTC835

Caterpillar Engines (Gas and Gen Set): 3208, 3304, 3304B, 3306, 3306B, 3406, 3406B, 3406C, 3406E, 3408, 3408B, 3412, 3412C, 3456, 3508, 3508B, 3512, 3512B, 3516, 3516B, G3304B, G3306, G3306B, G3406, G3408, G3408B, G3408C, G3412, G342C, G3508, G3508B, G3512, G3516, G3520B, G3606, G3606B, G3608, G3612, G3616

Note: This locknut is a widely used hardware fastener that fits many additional Caterpillar Cat models across multiple equipment families not listed above. Verify your part number before ordering.

Replaces Part Number(s):

2K4973, 2K-4973

Aftermarket Interchange Numbers

5A7951, 5E8584, SK-59231130JE

New aftermarket replacement part - not remanufactured, not used.