Value Collection 592405PR Hex Socket Cap Screw 1/2-20 Unf

Product Description

The VALUE COLLECTION 592405PR is a 1/2-20 UNF hex socket cap screw designed for precision fastening in mechanical assemblies, structural connections, and industrial equipment. It features a 3/8-inch hex drive socket head and measures 1-1/2 inches in length under the head. The fastener is fully threaded and manufactured from 18-8 austenitic stainless steel with a bright, uncoated finish. This combination of stainless grade and fine thread pitch makes it suitable for applications requiring corrosion resistance and close thread engagement. Machinists, maintenance technicians, and assembly professionals commonly install this fastener in both light industrial and commercial applications.

This cap screw is suited for use in assemblies where a flush or low-profile socket drive is required and a standard hex bolt head is not practical. The 1/2-20 UNF fine thread allows for greater tensile strength and more precise torque adjustment compared to coarse thread equivalents. Typical applications include machine frames, equipment panels, pump housings, and structural brackets in environments exposed to moisture or mild chemical contact where stainless steel fasteners are specified.

Key Features

• 1/2-20 UNF fine thread for precise engagement and higher tensile load capacity
• Fully threaded body along the 1-1/2-inch length under head
• 3/8-inch hex socket drive compatible with standard Allen or hex key tooling
• 18-8 austenitic stainless steel (Austenitic Grade A2) for corrosion resistance
• Bright uncoated finish — no plating to measure or account for in tight tolerances
• Meets ASME/ANSI B18.3 and ASTM F837 fastener standards

Compatibility

Designed as a standard replacement or procurement fastener for assemblies specifying a 1/2-20 UNF hex socket cap screw per ASME/ANSI B18.3 and ASTM F837.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a 3/8-inch hex key or Allen driver. Ensure the mating threaded hole or nut is clean and free of debris before installation. Do not mix stainless steel fasteners with dissimilar metals in environments prone to galvanic corrosion without appropriate isolation measures. Apply an anti-seize compound when installing stainless fasteners into stainless-tapped holes to prevent galling.