Value Collection 451655BR Hex Head Cap Screw 1-3/8-6 X 6 in Grade 8

Product Description

The VALUE COLLECTION 451655BR is a hex head cap screw designed for heavy-duty fastening applications requiring high tensile strength. Manufactured from Grade 8 steel with a bright uncoated finish, this fastener measures 1-3/8-6 thread size with a 6-inch length under head and follows UNC thread standards. It is partially threaded, conforming to ASME B18.2.1 dimensional standards. At 3.21 pounds, this is a substantial fastener suited for structural and industrial assemblies where fastener integrity under load is critical. Installation requires a 2-1/16-inch hex key or matching drive socket.

This cap screw is used in heavy industrial, structural, and mechanical assembly applications where Grade 8 strength is specified. Typical install scenarios include machinery frames, structural steel connections, heavy equipment mounting, and any application calling out high-strength inch-series fasteners under UNC thread specification. The partially threaded shank provides a bearing surface in the grip zone, which is appropriate for joints where the unthreaded shank spans the material thickness.

Key Features

• Grade 8 steel construction provides high tensile and proof load strength for demanding structural applications
• Partially threaded shank allows the unthreaded grip section to bear shear loads across the joint
• UNC thread form at 1-3/8-6 ensures broad compatibility with standard inch-series nuts and tapped holes
• Bright uncoated finish is suitable for use where coating thickness tolerances are critical or where field coating will be applied
• Conforms to ASME B18.2.1 dimensional standard for consistent fitment and interchangeability
• 2-1/16-inch hex drive accepts standard impact sockets and box-end wrenches used in industrial assembly

Compatibility

Designed as a standard inch-series hex head cap screw compatible with 1-3/8-6 UNC tapped holes and matching heavy hex nuts conforming to ASME B18.2.1 specifications.

Installation Notes

Installation is performed by mechanical or structural trades using a 2-1/16-inch socket, torque wrench, or impact driver rated for the fastener size. Follow applicable structural or equipment torque specifications from the engineer of record or equipment manufacturer, as no torque value is supplied with this fastener. Ensure the mating hole is clean, properly tapped to UNC standard, and free of debris before installation. Grade 8 fasteners should not be reused after yielding or after removal from a torque-to-yield application.