Value Collection 592415PR Hex Socket Cap Screw 1/2-20 Unf

Product Description

The VALUE COLLECTION 592415PR is a hex socket cap screw designed for applications requiring a secure, recessed-drive fastener. It features a 1/2-20 UNF thread size and measures 3 inches in length under the head. The drive is a 3/8 inch hex socket, accepting a standard Allen or hex key driver. Threading is partial, making this screw suited for through-hole and clearance-fit assemblies. Manufactured from 18-8 austenitic stainless steel (Grade A2), it delivers corrosion resistance appropriate for wet, marine, or chemically exposed environments. This fastener meets ASME/ANSI B18.3 and ASTM F837 standards. Machinists, millwrights, maintenance technicians, and fabricators are the typical installers.

This screw is used across a wide range of industrial, mechanical, and structural assembly applications. It is well suited for machine frames, brackets, enclosures, and equipment housings where a flush or low-profile fastener head is required. The stainless steel construction makes it appropriate for outdoor installations, food-processing environments, and other settings where carbon steel fasteners would corrode. The fine 1/2-20 UNF thread pitch offers higher clamping force and better resistance to loosening under vibration compared to coarse-thread equivalents.

Key Features

• 1/2-20 UNF fine thread for higher clamping force and vibration resistance
• 3 inches length under head for deep engagement in thick materials
• 3/8 inch hex socket drive accepts standard hex keys and socket drivers
• 18-8 austenitic stainless steel, Grade A2, for corrosion resistance
• Partially threaded shank for accurate location in clearance-fit holes
• Meets ASME/ANSI B18.3 and ASTM F837 fastener standards

Compatibility

Designed as a standard-dimension replacement or new-installation hex socket cap screw for any assembly specifying a 1/2-20 UNF partially threaded socket head cap screw conforming to ASME/ANSI B18.3.

Installation Notes

Installation is performed with a 3/8 inch hex key or socket driver; ensure the driver is fully seated before applying torque to avoid rounding the socket. Power down or de-energize any equipment before accessing fastener locations in electrical or mechanical enclosures. Stainless steel fasteners are susceptible to galling — apply an appropriate anti-seize compound to threads before installation in stainless or aluminum tapped holes. Follow applicable mechanical or structural codes for the specific application.