Value Collection D30165-6 Hex Cap Screw 7/8-9 X 6 in Grade 5

Product Description

The VALUE COLLECTION D30165-6 is a partially threaded hex head cap screw designed for heavy-duty fastening applications in industrial, mechanical, and trade assembly work. Built to Grade 5 steel with a zinc-plated finish, this fastener delivers reliable tensile strength and corrosion resistance suited for structural and equipment mounting tasks. It carries a 7/8-9 UNC thread size with a 6-inch length under head, conforming to ASME B18.2.1 dimensional standards. Machinists, millwrights, pipefitters, and field service technicians commonly use this fastener when securing flanges, frames, brackets, and mechanical assemblies where a standard coarse-thread hex cap is specified.

This fastener is appropriate for general industrial and commercial applications requiring a large-diameter, coarse-thread hex cap screw. The partial threading allows the unthreaded shank to bear shear loads in bolted joints, making it well suited for structural connections, equipment bases, and mounting applications where the bolt passes through clearance holes before engaging a nut or tapped bore. It is sold individually with a minimum order quantity of 10 units.

Key Features

• Grade 5 steel construction provides medium-high tensile strength for demanding fastening applications
• Zinc-plated finish offers corrosion resistance in typical indoor and light-duty outdoor environments
• Partially threaded shank allows the bolt body to carry shear loads in structural joints
• 7/8-9 UNC thread conforms to Unified National Coarse standard for broad tooling and nut compatibility
• Meets ASME B18.2.1 dimensional standards for hex head cap screws
• 6-inch length under head accommodates thick material stacks and deep clearance-hole assemblies

Compatibility

Designed as a standard-dimension hex head cap screw per ASME B18.2.1, compatible with any 7/8-9 UNC nut, tapped hole, or threaded insert conforming to Unified National Coarse thread specifications.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or trade technician using a properly sized hex socket or open-end wrench. Ensure mating threads and seating surfaces are clean and free of debris before installation. Do not exceed the rated torque for Grade 5 fasteners of this diameter as specified by applicable engineering standards or equipment OEM documentation. Apply thread lubricant or anti-seize only when specified by the assembly procedure.