Value Collection D30165-7 Hex Cap Screw 7/8-9 X 7 in Grade 5

Product Description

The VALUE COLLECTION D30165-7 is a partially threaded hex head cap screw designed for heavy-duty mechanical and structural fastening applications. It features a 7/8-9 UNC thread size and a 7-inch length under head, manufactured from Grade 5 steel with a zinc-plated finish for corrosion resistance. The coarse UNC thread pattern provides strong clamping force in standard tapped holes and nuts. This fastener meets ASME B18.2.1 dimensional standards, making it a reliable choice for maintenance, repair, and fabrication work across industrial, mechanical, and trade applications.

This hex head cap screw is suited for general mechanical assembly, structural connections, and equipment repair in industrial and commercial settings. The partial threading allows for a smooth shank section near the head, which is useful when fastening through clearance holes or where shear strength is a consideration. Maintenance technicians, millwrights, pipefitters, and general tradespeople commonly use this size for machinery mounting, bracket installation, and structural steel work.

Key Features

• 7/8-9 UNC coarse thread for strong engagement in standard threaded components
• 7-inch length under head suits deep-reach and thick-stack fastening applications
• Grade 5 steel construction provides tensile strength suitable for heavy-duty use
• Zinc-plated finish offers basic corrosion protection in moderate environments
• Partially threaded shank retains shear strength through clearance holes
• Conforms to ASME B18.2.1 dimensional standards for consistent fit and function

Compatibility

Designed as a standard inch-series hex head cap screw compatible with 7/8-9 UNC tapped holes and standard heavy hex or finished hex nuts meeting ASME B18.2.2 specifications.

Installation Notes

Installation is performed by maintenance technicians, millwrights, and general tradespeople using standard hex wrenches or socket sets sized for 7/8-9 hardware. Always ensure mating threads are clean and free of debris before assembly. Do not exceed the rated torque range for Grade 5 fasteners as published in applicable engineering references. Apply a thread lubricant or anti-seize compound when specified by the equipment manufacturer to prevent galling on zinc-plated surfaces.