Value Collection 581392PR Hex Socket Cap Screw 1/4-28 Unf

Product Description

The Value Collection 581392PR is a hex socket cap screw designed for precision fastening applications requiring a compact, high-strength connection. Threaded 1/4-28 UNF with a 1/4-inch length under the head, this fastener is fully threaded along its entire shank. It accepts a 3/16-inch hex drive and is manufactured from alloy steel with a black oxide finish for corrosion resistance in moderate environments. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards, making it appropriate for mechanical assemblies, tooling fixtures, and equipment maintenance work across industrial and trade settings.

This cap screw fits applications where a low-profile, socket-driven fastener is required and where fine thread engagement is critical for vibration resistance or thin-material fastening. The 1/4-28 UNF thread form provides tighter thread-per-inch spacing than coarse-thread equivalents, offering greater tensile strength per engagement depth. Typical uses include machinery maintenance, HVAC equipment panels, pump assemblies, and precision mechanical fixtures. This screw is sold individually with a minimum order quantity of 100 pieces.

Key Features

• 1/4-28 UNF fine thread for high-engagement strength and vibration resistance
• Fully threaded shank allows maximum thread engagement across the full 1/4-inch length
• 3/16-inch hex socket drive for use with standard Allen keys or hex bit drivers
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide finish provides mild corrosion protection and reduces light reflection
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for use in any application requiring a 1/4-28 UNF fully threaded fastener with a 3/16-inch hex drive.

Installation Notes

Install using a 3/16-inch hex key or socket bit driver. Ensure mating threads are clean and free of debris before installation. Power down or de-energize any equipment before accessing fastened panels or assemblies. Alloy steel fasteners should not be substituted into applications specifying stainless or non-ferrous materials without engineering review.