Value Collection D39110 Hex Head Cap Screw 1/2-13 X 2-1/2 in

Product Description

The VALUE COLLECTION D39110 is a partially threaded hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and construction assemblies. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this fastener delivers superior tensile strength and corrosion resistance compared to lower-grade alternatives. It features a 1/2-13 UNC thread size and a 2-1/2 inch length under head, making it a reliable choice for bolted connections that require a controlled clamp load. Conforms to ASME B18.2.1 standards. Installed by millwrights, maintenance technicians, pipefitters, and general tradespeople across a wide range of structural and equipment-mounting applications.

This cap screw is suited for use in heavy equipment assembly, structural steel connections, machinery mounting, and industrial maintenance repairs where Grade 8 strength is specified. The partial threading allows a smooth shank section between the bearing surface and the threaded engagement zone, which is important in applications requiring precise shear load distribution or clearance fit through one or more members before thread engagement begins.

Key Features

• Grade 8 steel construction provides high tensile and proof load strength for demanding fastening applications
• Zinc yellow dichromate finish offers corrosion resistance and visual identification as a high-strength fastener
• Partially threaded shank supports accurate load transfer and clearance-fit installation
• 1/2-13 UNC thread form for broad compatibility with standard inch-series nuts and tapped holes
• Conforms to ASME B18.2.1 dimensional standards for consistent fit and interchangeability
• Hex head drive accepts standard hex wrenches and impact sockets for efficient installation and removal

Compatibility

Designed for use with standard 1/2-13 UNC inch-series hex nuts, flat washers, and lock washers in bolted assemblies conforming to ASME B18.2.1 specifications.

Installation Notes

Installation is performed by qualified tradespeople or maintenance technicians using standard hex wrenches, combination wrenches, or impact drivers fitted with the appropriate socket. Always ensure mating threads and bearing surfaces are clean and free of debris before assembly. Consult applicable industry torque specifications for Grade 8 fasteners of this diameter when precise clamp load is required. De-energize or lock out any equipment before performing fastener replacement or maintenance on live machinery.