Value Collection 403218PS Hex Cap Screw 1/2-13 X 8 in Grade 2

Product Description

The VALUE COLLECTION 403218PS is a partially threaded hex head cap screw designed for general fastening applications in mechanical, structural, and industrial assembly work. Sized at 1/2-13 (1/2-inch diameter, 13 threads per inch, UNC standard) with an 8-inch length under head, this fastener is manufactured from Grade 2 steel with a zinc-plated finish that provides basic corrosion resistance. The partially threaded shank allows for clamping force between joined materials without thread engagement along the full length of the grip. Installers drive this fastener with a 3/4-inch hex wrench or socket.

This cap screw is suited for residential and light commercial construction, mechanical equipment assembly, and general maintenance applications where a standard-duty UNC inch-series fastener is required. The zinc coating makes it appropriate for indoor or sheltered environments where mild corrosion protection is needed. Sold individually, with a minimum order quantity of 5 pieces, it fits common use cases where replacement or supplemental fasteners are sourced in small quantities.

Key Features

• 1/2-13 UNC thread form — standard inch-series coarse thread for broad tool and hardware compatibility
• 8-inch length under head with partial threading — provides unthreaded grip zone for proper clamping between mating surfaces
• Grade 2 steel construction — suitable for general-purpose, non-critical fastening applications
• Zinc-plated finish — basic corrosion resistance for dry or sheltered installation environments
• 3/4-inch hex drive — compatible with standard hex sockets and wrenches

Compatibility

Designed as a general-purpose inch-series UNC hex head cap screw compatible with any application requiring a 1/2-13 thread, 8-inch under-head length, and partial threading with a 3/4-inch hex drive.

Installation Notes

Installation is performed by mechanical or maintenance technicians using a 3/4-inch socket, wrench, or impact driver. De-energize and lock out any associated equipment before fastener removal or installation in powered assemblies. Do not substitute Grade 2 fasteners in applications specifying higher-grade hardware such as Grade 5 or Grade 8. Thread engagement and clamping requirements should be verified against the applicable engineering specification for the assembly.