Value Collection D39035 Hex Head Cap Screw 5/16-18 X 2-1/2 in

Product Description

The Value Collection D39035 is a partially threaded hex head cap screw designed for high-strength bolted assemblies in industrial, mechanical, and structural applications. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this fastener meets ASME B18.2.1 dimensional standards. The 5/16-18 UNC thread and 2-1/2 inch length under head make it suitable for applications requiring a coarse-thread grip with a defined unthreaded shank section. The zinc yellow dichromate coating provides corrosion resistance and is visually identifiable by its characteristic gold-yellow color. Maintenance technicians, millwrights, and general contractors commonly use this fastener in equipment assembly and structural connections.

This hex head cap screw is used across a wide range of trade and industrial settings including HVAC equipment mounting, electrical panel fabrication, plumbing fixture installation, and general mechanical assembly. The 5/16-18 thread pitch is one of the most common coarse-thread sizes in inch-measurement fastener applications. The partially threaded shank is particularly suited for clamping two or more components tightly without thread engagement through the full grip length.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• Zinc yellow dichromate finish for corrosion resistance and visual grade identification
• 5/16-18 UNC coarse thread for broad tool and hardware compatibility
• Partially threaded shank provides a clean grip zone for precise clamping
• Meets ASME B18.2.1 dimensional standards for consistent fitment
• 2-1/2 inch length under head accommodates moderate-depth stack assemblies

Compatibility

Designed as an OEM-style replacement or standard-stock fastener for any application requiring a 5/16-18 UNC hex head cap screw with a 2-1/2 inch length under head in Grade 8 steel.

Installation Notes

Install with a standard hex wrench or socket driver sized for a 5/16-inch hex head cap screw. Confirm mating threads are clean and free of debris before installation. Torque to the value specified in the equipment manufacturer's documentation or applicable structural fastener standards. Grade 8 fasteners should not be substituted with lower-grade hardware in high-load or safety-critical connections.