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Grade 8 Hex Cap Screws Yellow Zinc - Domestic USA

Grade 8 Hex Cap Screws Yellow Zinc - Domestic USA


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Grade 8 Hex Cap Screws Yellow Zinc - Domestic USA

Grade 8 Hex Cap Screws are manufactured in the USA from medium carbon alloy steel. In diameters 1/4 to 1 1/2 inches our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications. Diameters over 1 1/2 inches meet or exceed ASTM A354 Grade BD. All material is manufactured with rolled threads. Yellow zinc plated bolting will meet or exceed ASTM F1941. Typical hardness on diameters 1/4 to 2 1/2 inches is HRC 33-39. On diameters over 2 1/2 inches, hardness will range from HRC 31-39. Tensile strength on diameters 1/4 to 2 1/2 inches is a minimum of 150,000 psi. Diameters over 2 1/2 inches have a meet a minimum of 140,000 psi.

 
Grade 8 Hex Cap Screws Yellow Zinc
Nominal or
Basic
Diameter
Body DiameterWidth Across FlatsWidth Across
Corners
Head HeightThread Length
For Bolt Lengths
For
Screw
Lengths
≤ 6 in.
For
Screw
Lengths
> 6 in.
 Max.Min.BasicMax.MinMaxMinBasic.MaxMin.Ref.Ref
1/40.25000.25000.24507/160.4380.4280.5050.4885/320.1630.1500.7501.000
5/160.31250.31250.30651/20.5000.4890.5770.55713/640.2110.1950.8751.125
3/80.37500.37500.36909/160.5620.5510.6500.62815/640.2430.2261.0001.250
7/160.43750.43750.43055/80.6250.6120.7220.6989/320.2910.2721.1251.375
1/20.50000.50000.49303/40.7500.7360.8660.8405/160.3230.3021.2501.500
9/160.56250.56250.554513/160.8120.7980.9380.91023/640.3710.3481.3751.625
5/80.62500.62500.617015/160.9380.9221.0831.05125/640.4030.3781.5001.750
3/40.75000.75000.74101-1/81.1251.1001.2991.25415/320.4830.4551.7502.000
7/80.87500.87500.86601-5/161.3121.2851.5161.46535/640.5630.5312.0002.250
11.00001.00000.99001-1/21.5001.4691.7321.67539/640.6270.5912.2502.500
1-1/81.12501.12501.11401-11/161.6881.6311.9491.85911/160.7180.6582.5002.750
1-1/41.25001.25001.23901-7/81.8751.8122.1652.06625/320.8130.7492.7503.000
1-1/21.50001.50001.48802-1/42.2502.1752.5982.4801-5/160.9740.9023.2503.500