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- Size: 7/8X7-1/2"
- Thread pitch: 7/8-9 UNC
- Material: medium carbon alloy steel
- Tensile Strength: 150,000 psi minimum
- Grade 8 Cap Screws comply with SAE J429, ANSI/ASME B18.2.1 hex cap screws
- Hardness: Rockwell Hardness C33-C39
- Tempering Temperature: 800° F.(minimum)
- Threads: UNRF and UNRC Radius Root Class 2A to ANSI/ASME B1.1
- Decarburization: Meets SAE J121
- Discontinuities: Meets SAE J1061
Rule of thumb to figure bolt thread length:
- For bolts under 6": Twice the bolt diameter plus a 1/4"
- For bolts over 6": Twice the bolt diameter plus a 1/2"
- This gives you the approximate bolt thread length available