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Description
Grade 5 hex cap screws in the 5/16″-18 x 10″ size are high-strength fasteners typically made of zinc-plated steel with a tensile strength of 120,000 psi. They are commonly available in bulk packs of 15 to 100 or as individual units from specialized industrial suppliers.
Product Specifications
According to manufacturers and industrial suppliers like Grainger and EPCO Sales, these fasteners meet the following standards:
- Diameter & Thread: 5/16 inch with 18 threads per inch (UNC Coarse).
- Length: 10 inches, measured from under the head to the tip.
- Material Grade: Grade 5 medium carbon steel, identified by three radial lines on the head.
- Finish: Zinc plated for corrosion resistance in indoor and light outdoor applications.
- Standards: Manufactured to ASME B18.2.1 and SAE J429 specifications.
- Thread Style: Partially threaded with a minimum thread length typically around 7/8 inch.
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