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DESCRIPTION

Highlights:

• Thread pitch: 5/16-18 UNC
• Conforms to SAE Grade 5 physical and mechanical specifications
• Zinc plated for corrosion resistance
• Pack of 100

Specifications:

• Diameter: 5/16"
• Finish:    Clear
• Grade: 5
• Head Height: 0.2031"
• Head Type: Hex Head
• Head Width: 1/2"
• Length Under Head: 1"
• Material: Steel
• Meets Standards: SAE Grade 5 physical and mechanical specifications
• Rockwell Hardness: C25-C34
• System of Measurement: Fractional
• Tensile Strength: 120000 psi
• Thread Direction: Right
• Thread Length: 3/4"
• Thread Size: 5/16"-18
• Thread Style: Partially Threaded
• Thread Type: Coarse

Technical Data:

• Material and Mechanical Properties of SAE J429
• Dimensions: ANSI/ASME B18.2.1 Hex Head Cap Screws
• Th reads: Radius Root Class 2A to ANSI/ASME B1.1
• Proof Load: 1/4" - 1" Nominal Diameter 85,000 psi; over 1" Nominal Diameter 74,000 psi
• Hardness: 1/4" - 1" Nominal Diameter Rockwell C25-C34; over 1" Nominal Diameter C19-C30
• Tensile: 1/4" - 1" Nominal Diameter 120,000 psi (minim um) over 1" Nominal Diameter 105,000 psi (minimum)
• D ecarburation: SAE J121
• Discontinuities: 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