1D5120 Nut-Jam Fits Caterpillar Models
1D5120 Nut-Jam Fits Caterpillar Models
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One New Aftermarket Replacement Jam Nut for Caterpillar (Cat) Equipment
This aftermarket replacement jam nut (also cataloged as a nut-jam) is a low-profile hex fastener used throughout Caterpillar construction and earthmoving equipment to lock adjusting components in position. Jam nuts are commonly found securing tie rod ends, adjustment studs, and linkage assemblies across a wide range of Cat machines. Replaces Caterpillar OEM part number 1D5120.
Specifications
- OEM Part Number: 1D5120
- Type: Jam Nut (low-profile hex nut)
- Dimensions: approximately 1.18 x 1.18 x 0.39 in.
- Weight: approximately 0.03 lbs.
- Thread Size: 3/4-16
Compatible Models
Caterpillar Motor Graders: 12F, 12G, 12H, 12H ES, 12H NA, 12K, 120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 130G, 135H, 135H NA, 140G, 140H, 140H ES, 140H NA, 140K, 140K 2, 143H, 14E, 14G, 160G, 160H
Caterpillar Compactors / Other: 10 FT, 10-20B, 10B, 16
Note: This part fits a broad range of Caterpillar equipment. The above list may not be exhaustive -- verify fitment by cross-referencing OEM part number 1D5120 with your machine's parts catalog.
Replaces Part Number(s):
1D5120
New aftermarket replacement part - not remanufactured, not used.



