Value Collection 592285PR Hex Socket Cap Screw 1/4-28 Unf

Product Description

The VALUE COLLECTION 592285PR is a hex socket cap screw designed for applications requiring a secure, low-profile fastener with a recessed drive. Sized at 1/4-28 UNF with a 3-inch length under head, this screw is partially threaded and driven by a 3/16-inch hex key. It is manufactured from 18-8 austenitic stainless steel (Grade A2), offering good corrosion resistance in moderate environments. Trades commonly used in HVAC, plumbing, electrical, and general mechanical assembly rely on socket cap screws like this for tight-clearance installations where a wrench-access limitation rules out external hex fasteners.

This screw is suited for light industrial and commercial mechanical assemblies, equipment panel mounting, bracket attachment, and maintenance applications where stainless steel corrosion resistance is required. The fine 1/4-28 UNF thread pitch provides stronger clamp load and better vibration resistance compared to coarse-thread equivalents of the same diameter, making it appropriate for metal-to-metal joints and precision mechanical components.

Key Features

• 1/4-28 UNF fine thread for higher clamp load and vibration resistance
• 3-inch length under head accommodates moderate material stack thickness
• 3/16-inch hex socket drive for use with standard Allen or hex key tools
• 18-8 austenitic stainless steel (Grade A2) provides corrosion resistance in moderate-humidity environments
• Partially threaded shank allows for precise shoulder-bearing load in bolted joints
• Meets ASME/ANSI B18.3 and ASTM F837 fastener standards

Compatibility

Designed as a standard 1/4-28 UNF hex socket cap screw suitable for general mechanical assemblies, equipment frames, and maintenance applications calling for an 18-8 stainless steel fastener to ASME/ANSI B18.3 dimensions.

Installation Notes

Installation is performed with a 3/16-inch hex key or Allen driver; use of a torque wrench with a hex bit is recommended in critical joints. Ensure mating threads are clean and free of debris before fastening. In stainless-to-stainless assemblies, apply an appropriate anti-galling lubricant to prevent thread seizure during installation. Always follow applicable mechanical codes and equipment manufacturer torque guidelines for the specific assembly.