Value Collection MP39012 Hex Head Cap Screw 1/4-20 X 3 in Grade 8

Product Description

The VALUE COLLECTION MP39012 is a 1/4-20 x 3-inch hex head cap screw manufactured from Grade 8 steel with a zinc yellow dichromate finish. Grade 8 steel provides high tensile strength suitable for heavy-duty fastening applications across industrial, mechanical, and structural assemblies. The zinc yellow dichromate coating delivers corrosion resistance in environments where mild chemical or moisture exposure is expected. The screw features partial threading per the UNC thread standard and conforms to ASME B18.2.1 dimensional requirements. It is sold in packs of 25 and is appropriate for use by maintenance technicians, millwrights, and general tradespeople working with inch-series hardware.

This cap screw is suited for bolted connections in equipment enclosures, mechanical frames, HVAC structural components, and general industrial assemblies where a high-strength inch-series fastener is required. The 1/4-20 UNC thread and 3-inch length under head make it compatible with standard 1/4-inch tapped holes and clearance hole applications. Partial threading allows for greater shank engagement in applications where a grip length is needed before threads engage the nut or tapped member.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• Zinc yellow dichromate finish provides corrosion and mild chemical resistance
• 1/4-20 UNC thread standard, partially threaded per ASME B18.2.1
• 3-inch length under head suits applications requiring extended grip length
• Sold in a 25-piece pack for common service and maintenance quantities

Compatibility

Designed as a standard 1/4-20 UNC hex head cap screw for use in any application requiring a Grade 8 inch-series fastener with a 3-inch length under head.

Installation Notes

Installation should be performed by a qualified technician using the appropriate hex socket or open-end wrench sized for a 1/4-inch hex head cap screw. Always ensure the mating tapped hole or nut is clean and free of debris before assembly. Follow applicable torque specifications from the equipment manufacturer or applicable industry standards for Grade 8 fasteners of this diameter. Inspect threads for damage before installation and do not reuse fasteners that show signs of deformation or corrosion.