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The VALUE COLLECTION 015203PR is a hex socket cap screw designed for high-strength fastening applications across industrial, mechanical, and construction trades. Sized at 5/16-18 UNC with 1 inch of length under the head, this fastener is fully threaded and driven by a 1/4 inch hex key. Constructed from alloy steel with a black oxide finish coating, it provides solid corrosion resistance in moderate-exposure environments. It meets ASME/ANSI B18.3, ASTM A574, and IFI 124 standards, making it suitable for applications requiring documented fastener compliance. Electricians, pipefitters, and general contractors reach for this screw when securing panels, brackets, and structural assemblies.
This screw is used in a wide range of industrial and mechanical assemblies where a low-profile, high-torque socket drive fastener is required. The 5/16-18 UNC coarse thread provides reliable engagement in steel and aluminum tapped holes. The black oxide finish suits indoor and light-duty outdoor installations where moderate corrosion protection is acceptable. It is appropriate for machine assembly, equipment mounting, and panel fabrication work across HVAC, electrical, plumbing, and general mechanical trades.
Designed as a standard 5/16-18 UNC hex socket cap screw suitable for use in any tapped hole or application requiring ASME/ANSI B18.3 and ASTM A574 compliant fasteners.
Installation requires a 1/4 inch hex key or matching socket driver. Ensure the mating tapped hole is clean and free of debris before threading. Do not over-torque alloy steel cap screws in soft base materials such as aluminum without referencing applicable torque specifications for the assembly. Follow applicable mechanical and structural codes for the specific trade and installation environment.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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