Value Collection MP39004 Hex Head Cap Screw 1/4-20 X 1 in Grade 8

Product Description

The VALUE COLLECTION MP39004 is a fully threaded hex head cap screw designed for high-strength mechanical fastening applications. It features a 1/4-20 UNC thread size with a 1-inch length under head, manufactured from Grade 8 steel and finished with a zinc yellow dichromate coating for corrosion resistance. This fastener meets ASME B18.2.1 and SAE J429 standards, making it suitable for demanding structural and mechanical assemblies. It is commonly installed by maintenance technicians, millwrights, and trade professionals working on equipment, brackets, and structural components requiring a reliable, high-tensile hex fastener.

This screw is well suited for use in industrial, commercial, and residential maintenance settings. Its Grade 8 steel construction provides high tensile and proof load strength, appropriate for bolted connections subject to vibration or mechanical stress. The zinc yellow dichromate finish offers a measure of corrosion resistance in moderately demanding environments. The fully threaded shank allows engagement along the entire fastener length, which is useful in through-bolt and thin-material applications. This package contains 50 pieces, making it appropriate for both single-task repairs and small production runs.

Key Features

• Grade 8 steel construction for high tensile strength in demanding fastening applications
• Fully threaded shank engages material along the entire 1-inch length under head
• 1/4-20 UNC thread standard for compatibility with standard inch-series nuts and tapped holes
• Zinc yellow dichromate finish provides corrosion resistance in moderate-exposure environments
• Meets ASME B18.2.1 and SAE J429 dimensional and mechanical standards
• Sold in a 50-piece package to support both repair and small-batch assembly work

Compatibility

Designed as an OEM-style replacement or standard-stock fastener for any application requiring a 1/4-20 UNC fully threaded hex head cap screw in Grade 8 steel with a zinc yellow dichromate finish.

Installation Notes

Install using a standard hex wrench, socket, or box-end wrench sized to the hex head. Verify thread engagement and ensure the mating nut or tapped hole meets the same UNC thread standard before torquing. De-energize or isolate any equipment being serviced before fastener removal or installation. Follow applicable torque specifications from the equipment manufacturer or relevant structural codes for Grade 8 fasteners of this size.