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Technical Specifications: Caterpillar 0S-1585 Hex Head Bolt
The Caterpillar 0S-1585 Hex Head Bolt is a high-tensile, heavy-duty mechanical fastener. It is widely used across various heavy equipment structures, track systems, and engine blocks to provide superior clamping force under extreme mechanical stress and high-vibration conditions.
1. Core Dimensions & Fastener Specs
- Thread Size: 1/2 inch
- Hole Thread Pitch: 13 threads per inch (1/2-13 UNC Coarse Thread)
- Bolt Length: 38.10 mm (1.50 in)
- Grip Length: 6.35 mm (0.25 in)
- Drive / Hex Head Width Across Flats: 19.05 mm (3/4 in)
- Head Height: 9.53 mm (0.39 in)
- Net Weight: 0.05 kg (0.11 lbs)
2. Material & Manufacturing Specs
- Material Grade: SAE J429 Grade 8 carbon or alloy steel.
- Strength Identification: Head marked with 6 radial lines indicating 150 ksi Ultimate Tensile Strength.
- Coating & Finish: Dark grey to black Zinc Phosphate and Oil coated to provide corrosion protection up to the point of assembly.
- Thread Hand: Right-Hand (RH).
3. Equipment & Engine Compatibility
This high-strength fastener is extensively deployed across dozens of Caterpillar model families, serving as a roller bolt, track bolt, or primary engine mount component:
- Engine Series: CAT 3116, 3126, 3208, 3304, 3306, 3406, 3408, 3412, 3508, 3512, and 3516 (including B and C sub-variants).
- Track-Type Tractors & Dozers: Caterpillar D3, D3B, D3C, D4D, D5, D6C, D6D, D9G, and D9L platforms.
- Earthmoving & Mining Trucks: Articulated dump trucks ranging from the D25C series up to the 735, 740, and 777B/785 heavy trucks.
- Excavators: CAT 215, 225, 229, 235, and 245 heavy models.
4. Part Cross-References
- Alternative Part Numbers: 0S1585, 0S 1585, 247-0235