Value Collection 592397PR Hex Socket Cap Screw 1/2-20 Unf

Product Description

The VALUE COLLECTION 592397PR is a hex socket cap screw designed for secure mechanical fastening in applications requiring fine-thread engagement and corrosion resistance. This screw features a 1/2-20 UNF thread size, a 3/4-inch length under head, and is fully threaded from head to tip. It is driven with a 3/8-inch hex key. The fastener is manufactured from 18-8 stainless steel (Austenitic Grade A2), which provides solid resistance to rust and oxidation without a surface coating. It meets ASME/ANSI B18.3 and ASTM F837 standards. Machinists, maintenance technicians, and tradespeople working in corrosive environments use this fastener in general mechanical assemblies, fixtures, and equipment builds.

This fastener is suited for fine-thread applications where vibration resistance and precise torque control are priorities. Its fully threaded shank provides maximum thread engagement across the full grip length, making it effective in through-hole and tapped-hole installations. The uncoated bright finish indicates base material is left exposed, which is appropriate for environments where austenitic stainless steel provides sufficient corrosion resistance on its own. Typical applications include HVAC equipment assemblies, plumbing fixture mounting, electrical panel fabrication, and general industrial maintenance work.

Key Features

• 1/2-20 UNF fine thread for precise engagement and vibration resistance
• Fully threaded shank maximizes thread contact through the full length under head
• 18-8 stainless steel (Austenitic Grade A2) for corrosion resistance in wet or outdoor environments
• 3/8-inch hex drive accepts standard hex keys and hex bit drivers
• Bright/uncoated finish — no added coating to compromise thread fit or dimensional tolerances
• Meets ASME/ANSI B18.3 and ASTM F837 fastener standards

Compatibility

Designed for use in tapped holes or with standard 1/2-20 UNF hex nuts in general mechanical, HVAC, plumbing, and industrial assembly applications requiring a hex socket drive cap screw.

Installation Notes

Installation is performed with a 3/8-inch hex key or hex bit driver; confirm proper driver engagement before applying torque to avoid socket rounding. Power down and de-energize any equipment before replacing or installing fasteners in live assemblies. Follow applicable mechanical codes and equipment manufacturer torque specifications for this thread size and material grade. Do not mix stainless steel fasteners with dissimilar metals in high-conductivity or galvanic-sensitive environments without appropriate isolation.