Value Collection D39112 Hex Head Cap Screw 1/2-13 X 3 in

Product Description

The VALUE COLLECTION D39112 is a 1/2-13 x 3-inch hex head cap screw manufactured from Grade 8 steel with a zinc yellow dichromate finish. Designed for high-strength fastening applications, this partially threaded screw meets ASME B18.2.1 dimensional standards and uses a UNC thread form. Grade 8 steel provides significantly higher tensile strength than standard hardware grades, making it suitable for heavy-duty mechanical assemblies, structural connections, and equipment installations where fastener integrity is critical. The zinc yellow dichromate coating offers corrosion resistance in moderate-exposure environments.

This hex head cap screw is used across a wide range of industrial, mechanical, and trade applications including HVAC equipment mounting, structural steel connections, pump and motor assemblies, and general maintenance repair. The partially threaded shank allows for proper clamping force between mating components, which is preferred in bolted joint assemblies where the unthreaded body passes through clearance holes. Suitable for use by HVAC technicians, plumbers, electricians, and mechanical contractors working with equipment frames and structural supports.

Key Features

• Grade 8 steel construction for high tensile strength in demanding fastening applications
• Zinc yellow dichromate finish provides moderate corrosion resistance
• Partially threaded shank for proper clamping in through-bolt assemblies
• UNC thread form (1/2-13) for compatibility with standard inch-series nuts and tapped holes
• Meets ASME B18.2.1 dimensional standard for hex head cap screws

Compatibility

Designed as an OEM-style replacement or standard-service fastener for any application requiring a 1/2-13 UNC hex head cap screw with a 3-inch length under head, Grade 8 steel, and zinc yellow dichromate finish per ASME B18.2.1.

Installation Notes

Installation should be performed by a qualified mechanic or trade professional using a properly sized hex wrench or socket. Always torque fasteners to the specification required by the equipment or structure being assembled — do not rely on generic torque values. Ensure mating nuts or tapped holes are clean, undamaged, and rated for Grade 8 loads before assembly. Follow applicable codes and equipment manufacturer guidelines when using high-strength fasteners in structural or pressure-boundary applications.