Value Collection MP39105 Hex Head Cap Screw 1/2-13 X 1-1/4 in Grade 8

Product Description

The VALUE COLLECTION MP39105 is a fully threaded hex head cap screw designed for high-strength fastening applications in mechanical, structural, and industrial assemblies. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this fastener delivers elevated tensile strength and corrosion resistance compared to lower-grade hardware. The 1/2-13 thread designation follows the Unified National Coarse (UNC) standard, and the screw measures 1-1/4 inches under the head. Each package contains 25 pieces and conforms to ASME B18.2.1 dimensional standards. Maintenance technicians, millwrights, and general tradespeople rely on this screw where high-load connections require a reliable, standardized fastener.

This screw is suited for general industrial and commercial fastening work where Grade 8 strength is specified. Typical applications include machinery mounting, structural steel connections, equipment frames, and heavy-duty brackets. The fully threaded configuration provides maximum thread engagement across the full length under the head, making it appropriate for through-bolt applications and joints where grip length is short. The zinc yellow dichromate finish offers a degree of corrosion protection suitable for dry to moderately humid indoor environments.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• Zinc yellow dichromate finish provides corrosion resistance and is visually identifiable as Grade 8
• Fully threaded along the full length under head for maximum thread engagement
• 1/2-13 UNC thread form meets Unified National Coarse standards
• Conforms to ASME B18.2.1 dimensional and tolerance specifications
• Sold in a 25-piece package with a minimum order quantity of 1

Compatibility

Designed as a standard 1/2-13 UNC hex head cap screw conforming to ASME B18.2.1, compatible with any application specifying a Grade 8 fully threaded fastener in that thread size and length.

Installation Notes

Installation is performed by qualified mechanics, millwrights, or maintenance technicians using a standard hex wrench or impact driver with the appropriate socket. Always verify the mating thread is clean, undamaged, and sized for 1/2-13 UNC before installation. Torque to the value specified by the equipment manufacturer or applicable engineering standard for Grade 8 fasteners at this diameter. Do not mix Grade 8 hardware with lower-grade nuts or threaded inserts, as this can reduce joint integrity.