0S1620 Bolt Fits Caterpillar Models

One New Aftermarket Replacement Hex Head Bolt for Caterpillar (Cat) Equipment

This is a Grade 8 external hex head bolt used across a wide range of Caterpillar construction, agricultural, and industrial equipment. Threaded 1/2-13 (UNC) with a zinc phosphate and oil coating for corrosion resistance, it is a standard Cat fastener stocked across multiple machine families. Replaces OEM part number 0S-1620.

Specifications

• Bolt Type: External Hex Head
• Thread Size: 1/2-13 UNC (right-hand thread)
• Bolt Length: 3/4 in. (19.05 mm)
• Grip Length: 0.125 in. (3.17 mm)
• Grade: SAE J429 Grade 8 (150 ksi)
• Coating: Zinc Phosphate + Oil
• Material: Alloy Carbon Steel
• Locking Feature: None

Compatible Models

Caterpillar Wheel Tractor-Scrapers: 621, 621K, 623, 623K, 623K LRC, 627, 627K, 627K LRC, 631, 631K, 632, 637, 637K, 651, 657

Caterpillar Track Skidders: 517, D4HTSK II, D5HTSK II

Caterpillar Wheel Skidders: 518, 528

Caterpillar Integrated Tool Carriers: IT12, IT18, IT18B, IT28, IT28B

Caterpillar Truck Engines: 1673, 1673B, 1693

Caterpillar Generators: SR4, SR4B, SR5

Caterpillar Rotary Drills: MD6250, MD6310

Note: This is a standard Cat fastener used across many machine families. Verify your specific application before ordering.

Replaces Part Number(s):

0S1620, 0S-1620

New aftermarket replacement part - not remanufactured, not used.