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DESCRIPTION

Highlights:

• Size: 1/2X2-1/4
• Thread pitch: 1/2-20 UNF
• Tensile Strength: 150,000 psi minimum
• Material: medium carbon alloy steel
• Grade 8 Cap Screws comply with SAE J429, ANSI/ASME B18.2.1 hex cap screws
• Imperial's zinc-yellow-dichromate plating provides the extra corrosion protection not found in regular zinc plated fasteners
• Pack of 50

Technical Data:

• Tensile: 150,000 psi minimum
• Hardness: Rockwell Hardness C33-C39
• Tempering Temperature: 800° F.(minimum)
• Finish: Zinc Yellow.   
• Decarburization: Meets SAE J121
• Discontinuities: Meets SAE J1061
• Threads: UNRF and UNRC Radius Root Class 2A to ANSI/ASME B1.1

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