Value Collection MP39002 Hex Cap Screw 1/4-20 X 3/4 in Grade 8

Product Description

The VALUE COLLECTION MP39002 is a 1/4-20 UNC hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and maintenance settings. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this fully threaded fastener delivers superior tensile strength and corrosion resistance compared to lower-grade alternatives. At 3/4 inches in length under the head, it conforms to ASME B18.2.1 dimensional standards. Each package contains 50 pieces, making it well suited for shop stock, MRO replenishment, and production assembly. Licensed trades including pipefitters, millwrights, HVAC installers, and electrical contractors rely on Grade 8 fasteners where standard hardware-grade screws are not rated for the load.

This cap screw is appropriate for general industrial and mechanical assembly where high-clamping-load fasteners are required. The 1/4-20 UNC thread series is one of the most common coarse-thread sizes in North American trade work, fitting a wide range of tapped holes, nuts, and threaded inserts. The zinc yellow dichromate coating provides moderate corrosion protection and is recognizable by its distinctive yellow iridescent finish, which also serves as a visual indicator of Grade 8 specification. The fully threaded shank maximizes thread engagement in shallow applications and short-grip joints.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• Fully threaded shank for maximum thread engagement in short-grip applications
• Zinc yellow dichromate finish provides moderate corrosion resistance and grade identification
• Conforms to ASME B18.2.1 dimensional standard
• 1/4-20 UNC coarse thread, one of the most widely used thread sizes in North American trade fastening
• Sold in a 50-piece package, suitable for stocking and production use

Compatibility

Designed as a standard 1/4-20 UNC fully threaded hex head cap screw conforming to ASME B18.2.1, compatible with any 1/4-20 tapped hole, nut, or threaded insert meeting UNC coarse-thread specifications.

Installation Notes

Installation is performed with a standard hex (six-point) socket or open-end wrench sized for a 1/4-20 cap screw. Always verify thread engagement depth and joint material before torquing. Do not mix Grade 8 fasteners with lower-grade nuts or inserts, as mismatched hardware can reduce joint integrity. Follow applicable industry or equipment manufacturer torque specifications for 1/4-20 Grade 8 fasteners when assembling safety-critical joints.