Value Collection MP39007 Hex Head Cap Screw 1/4-20 Grade 8 50pk

Product Description

The VALUE COLLECTION MP39007 is a 1/4-20 hex head cap screw designed for heavy-duty fastening applications in industrial, mechanical, and structural assemblies. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this fastener delivers high tensile strength and corrosion resistance suitable for demanding service environments. The screw features partial threading along a 1-3/4 inch length under head and conforms to ASME B18.2.1 dimensional standards. Sold in a package of 50, this fastener is a practical stocking option for shops, field technicians, and maintenance crews working with inch-series hardware.

This hex head cap screw is suited for bolted joint assemblies in HVAC equipment mounting, electrical enclosure fabrication, mechanical equipment installation, and general trade applications where a high-strength inch-series UNC fastener is required. The Grade 8 steel construction makes it appropriate for high-load or vibration-prone assemblies where standard Grade 5 hardware would be undersized. The zinc yellow dichromate finish provides a recognizable visual indicator of Grade 8 classification and adds a baseline level of corrosion protection for indoor and sheltered outdoor use.

Key Features

• Grade 8 steel construction for high tensile and proof load capacity
• Zinc yellow dichromate finish provides corrosion resistance and serves as a visual grade identifier
• Partially threaded shank allows for precise clamping in bolted joint applications
• Conforms to ASME B18.2.1 dimensional standard for consistent fit with standard hex nuts and washers
• UNC thread form for broad compatibility with standard inch-series hardware
• Packaged in quantities of 50 for efficient stocking and job-site use

Compatibility

Designed for use with standard 1/4-20 UNC hex nuts, flat washers, and lock washers conforming to inch-series fastener standards. Suitable as a replacement or stocking fastener wherever a 1/4-20 x 1-3/4 inch Grade 8 partially threaded hex cap screw meeting ASME B18.2.1 is specified.

Installation Notes

Installation is typically performed by maintenance technicians, millwrights, or licensed tradespeople using a standard hex wrench or socket driver sized for a 1/4-inch hex cap screw. Always de-energize and lock out equipment before replacing or installing fasteners on live assemblies. Torque to the value specified in the equipment manufacturer's documentation or applicable engineering standards — do not substitute general-purpose torque values. Inspect mating threads for damage or contamination before assembly to ensure full thread engagement.