Value Collection 451165BR Hex Head Cap Screw 7/8-9 X 9 in

Product Description

The VALUE COLLECTION 451165BR is a Grade 8 steel hex head cap screw with a 7/8-9 UNC thread and a 9-inch length under head. It is partially threaded and supplied with a bright, uncoated finish. Grade 8 steel provides high tensile strength for demanding fastening applications where standard hardware-grade fasteners are not adequate. This fastener conforms to ASME B18.2.1 dimensional standards. It is driven with a 1-5/16-inch hex key or standard hex socket and is suited for structural, industrial, and mechanical assembly work performed by maintenance technicians, millwrights, and trade professionals.

This cap screw is used in heavy-duty bolted joint assemblies across industrial machinery, structural steel connections, agricultural equipment, and general mechanical fabrication. The partial threading allows it to pass through clearance holes and clamp mating components along the unthreaded shank. The 9-inch length under head makes it appropriate for thick-stack applications where shorter fasteners are insufficient. Installation typically involves a matching 7/8-9 UNC nut and hardened washer appropriate for Grade 8 service.

Key Features

• Grade 8 steel construction for high tensile and proof load capacity
• Partially threaded shank for clearance-hole pass-through and tight clamping
• Bright uncoated finish — suitable for use with additional coating or plating if required
• Conforms to ASME B18.2.1 dimensional standard for reliable fitment
• 1-5/16-inch hex drive compatible with standard hex sockets and wrenches
• 7/8-9 UNC thread for broad availability of matching nuts and hardware

Compatibility

Designed for use with 7/8-9 UNC threaded nuts and hardened washers in bolted joint assemblies requiring Grade 8 fasteners per ASME B18.2.1.

Installation Notes

Installation should be performed by a qualified millwright, maintenance technician, or mechanical tradesperson familiar with torqued bolted joint procedures. Always use a hardened flat washer under the head when specified by the joint design. Verify thread engagement depth and ensure the nut and screw are the same thread class before assembly. Follow applicable industry or equipment manufacturer torque specifications for 7/8-9 Grade 8 fasteners.