1A9579 Capscrew Fits Caterpillar Models
1A9579 Capscrew Fits Caterpillar Models
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One New Aftermarket Replacement Capscrew for Caterpillar (Cat) Equipment
This aftermarket replacement capscrew (also referenced as a bolt) is a Grade 5 hex head fastener used across a wide range of Caterpillar construction and agricultural equipment. The 1A9579 is a high-volume Caterpillar fastener appearing across dozens of machine lines, from motor graders and articulated trucks to engines and dozers.
Specifications
- Part Type: Hex Head Capscrew / Bolt
- Thread Size: 5/16 in - 18 UNC (Coarse Thread)
- Length: 1-1/2 in
- Head Type: Hex
- Finish: Phosphate and Oil Coated
- Weight: 0.04 lbs
Compatible Models
Caterpillar Motor Graders: 12E, 12F, 12G, 120B, 120G, 130G, 140B, 140G, 140H, 141, 143H, 14E, 14G, 14H NA, 160G, 160H, 160H ES, 160H NA, 163H NA, 16G, 16H NA
Caterpillar Engines: 1140, 1145, 1150, 1160, 1673C, 1674, 1676
Caterpillar Other Equipment: 16, 153, 163, 172, 173B
Note: This fastener fits many additional Caterpillar machine lines. Verify your machine's parts manual or serial number to confirm correct application before ordering.
Replaces Part Number(s):
1A9579, 1A-9579
New aftermarket replacement part - not remanufactured, not used.



