Value Collection A997500 Hex Socket Cap Screw 1/4-20

Product Description

The VALUE COLLECTION A997500 is a hex socket cap screw designed for secure, high-torque fastening in mechanical, industrial, and trade applications. Threaded 1/4-20 UNC with a 2-3/4 inch length under head, this fastener uses a 3/16 inch hex drive and is partially threaded for proper clamping in through-hole and tapped-hole assemblies. Constructed from 18-8 austenitic stainless steel (Material Grade A2), it delivers solid corrosion resistance suitable for both indoor and outdoor environments. This package contains 10 screws, making it practical for service calls, maintenance kits, or light production use.

This screw is appropriate for general mechanical assemblies, equipment maintenance, and fabrication work where a flush, low-profile cap head is required. The 1/4-20 UNC thread is one of the most common unified coarse thread standards in North American trade applications, fitting a wide range of tapped components and hex nuts. Partial threading provides clamping force concentration at the joint, which is standard practice for bolted connections requiring pulldown strength rather than full thread engagement through the entire grip length.

Key Features

• 1/4-20 UNC thread for broad compatibility with standard tapped holes and hardware
• 2-3/4 inch length under head suits medium to deep fastening applications
• 3/16 inch hex socket drive for use with standard hex keys and socket drivers
• Partially threaded shank provides concentrated clamping force at the joint
• 18-8 austenitic stainless steel construction resists corrosion in wet or humid environments
• Meets ASME/ANSI B18.3 and ASTM F837 fastener standards

Compatibility

Designed as a standard-dimension hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM F837, compatible with any 1/4-20 UNC tapped hole or appropriately sized through-hole assembly accepting a cap screw head profile.

Installation Notes

Installation is performed with a 3/16 inch hex key or socket driver; ensure the drive tool is fully seated before applying torque to avoid cam-out or fastener damage. De-energize and lock out any equipment before disassembling or reassembling fastened assemblies per applicable OSHA lockout/tagout procedures. Stainless steel fasteners are susceptible to galling — apply an appropriate anti-seize compound when torquing into stainless or aluminum tapped holes. Do not use impact drivers without a torque-limiting adapter, as 1/4-20 stainless cap screws can be damaged by uncontrolled torque.