Value Collection 592317PR Hex Socket Cap Screw 5/16-24 Unf

Product Description

The VALUE COLLECTION 592317PR is a hex socket cap screw designed for applications requiring a precise, high-strength threaded fastener with a low-profile head. Manufactured from 18-8 austenitic stainless steel (ASTM A2 grade), it resists corrosion in wet, chemical, and outdoor environments. The screw features a 5/16-24 UNF thread specification, a 2-1/2 inch length under the head, and a 1/4 inch hex drive. It is partially threaded, making it suitable for clamping applications where thread engagement length matters. Machinists, maintenance technicians, equipment assemblers, and field service professionals install this fastener across a wide range of mechanical assemblies.

This cap screw is used in precision mechanical assemblies, light structural connections, and equipment maintenance applications across industrial, commercial, and trade environments. The UNF (Unified National Fine) thread series is common in applications demanding finer thread pitch for improved holding strength and resistance to loosening under vibration. The 18-8 stainless steel construction makes it appropriate for plumbing fixtures, HVAC equipment brackets, pool and spa hardware, and any installation where moisture or mild chemical exposure is present.

Key Features

• 5/16-24 UNF partially threaded hex socket cap screw for vibration-resistant clamping applications
• 18-8 austenitic stainless steel (Austenitic Grade A2) for corrosion resistance in wet and chemical environments
• Bright/uncoated finish — no coating variability affecting dimensional tolerances
• 1/4 inch hex (Allen) drive for use with standard hex keys and socket drivers
• Meets ASME/ANSI B18.3 and ASTM F837 fastener standards
• Partial threading supports accurate clamping force between mated surfaces

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for use in any application requiring a 5/16-24 UNF partially threaded fastener with a 1/4 inch hex drive and 18-8 stainless steel material.

Installation Notes

Install using a 1/4 inch hex key or Allen driver; ensure the drive is fully seated before applying torque to prevent rounding the socket. Power down or de-energize any equipment before replacing fasteners on live assemblies. Use thread-compatible nuts or tapped holes rated for UNF 5/16-24 thread engagement. Stainless steel fasteners are prone to galling — apply an appropriate anti-seize compound when threading into stainless or aluminum tapped holes.