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The VALUE COLLECTION 33634 is a hex socket cap screw designed for applications requiring a strong, corrosion-resistant threaded fastener. This screw features a 3/8-16 UNC thread size with a 1-inch length under head and is fully threaded from tip to head. The alloy steel construction with a black oxide finish provides improved corrosion resistance and reduces light reflection in low-clearance or close-tolerance installations. Drive size is 5/16 inch hex, requiring a standard hex key or Allen wrench. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards, making it appropriate for structural and mechanical applications where high-strength fasteners are specified.
This hex socket cap screw is used across a wide range of mechanical, industrial, and equipment maintenance applications. It is commonly installed in HVAC equipment panels, pump assemblies, electrical enclosures, and general-purpose machinery where socket-drive access is limited or preferred. The black oxide finish suits indoor and light-duty outdoor applications. Licensed tradespeople and maintenance technicians working in tight-clearance assemblies frequently specify this fastener type for reliable clamping in metal-to-metal joints.
Designed as a standard 3/8-16 UNC hex socket cap screw suitable for general mechanical and industrial fastener applications where ASME/ANSI B18.3 and ASTM A574 compliant hardware is required.
Installation requires a 5/16-inch hex key or Allen wrench. Power down and de-energize all equipment before fastener service on electrical or HVAC assemblies. Do not exceed the rated torque specifications for the fastener grade as defined by ASTM A574 guidelines. Ensure mating threads are clean and free of debris before assembly to achieve proper clamping load.
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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