Value Collection 451893BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451893BR is a heavy-duty hex head cap screw designed for high-strength bolted assemblies in industrial, construction, and mechanical applications. Manufactured from Grade 8 steel with a bright uncoated finish, this fastener delivers the elevated tensile strength required for demanding structural and equipment-mounting work. The screw measures 2-4/2 inches in thread size and 15 inches in length under head, with partial threading along the shank. It conforms to ASME B18.2.1, the standard governing inch-series hex cap screws, ensuring consistent dimensional accuracy and mechanical performance across critical joints.

This cap screw is suited for heavy industrial assemblies, large machinery, structural steel connections, and fabrication work where a Grade 8 fastener is specified. The partially threaded shank provides a bearing surface that resists shear loads in bolted connections. At 16.5 pounds per unit, this is a large-format fastener typically specified by mechanical contractors, industrial maintenance technicians, and structural fabricators working with thick-gauge steel components or heavy equipment frames.

Key Features

• Grade 8 steel construction provides high tensile and proof load strength for critical bolted joints
• Partially threaded shank improves shear resistance and bolt alignment in thick-material applications
• Bright uncoated finish suitable for environments where coatings are not required or where additional plating will be applied
• Conforms to ASME B18.2.1 for dimensional accuracy and mechanical property compliance
• UNC thread standard ensures broad compatibility with standard inch-series nuts and tapped holes
• Hex key size of 3 inches accommodates heavy-duty drive tooling appropriate for large-diameter fasteners

Compatibility

Designed for use with standard UNC inch-series hex nuts and tapped holes in Grade 8 or compatible steel assemblies conforming to ASME B18.2.1 specifications.

Installation Notes

Installation should be performed by qualified mechanical or structural technicians using calibrated torque equipment rated for large-diameter Grade 8 fasteners. Always verify that the mating nut or tapped hole thread class and material grade are compatible before assembly. Follow applicable torque specifications from a recognized engineering reference or project specification, as none are supplied with this fastener. Inspect threads for damage before installation and ensure the joint surfaces are clean and free of debris.