Value Collection 451073BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451073BR is a heavy-duty hex head cap screw designed for high-strength bolted connections in industrial, structural, and mechanical applications. Measuring 1-1/2-6 UNC thread with a 10-inch length under the head, this fastener is manufactured from Grade 8 steel with a bright, uncoated finish. It features partial threading, making it well suited for applications that require a smooth shank bearing surface. Weighing 5.81 pounds, this is a substantial fastener built for demanding load-bearing joints. Licensed fastener installers and industrial maintenance technicians are the primary users of this size class.

This cap screw is used in heavy equipment assembly, structural steel fabrication, large machinery mounting, and industrial maintenance applications. The 1-1/2-6 UNC thread pitch and 10-inch length under head make it appropriate for thick-section connections where clamping force and shank clearance are both critical. It conforms to ASME B18.2.1 standards, making it suitable for engineered assemblies that specify dimensional compliance. It is sold individually and is compatible with standard 1-1/2-inch UNC heavy hex nuts and washers.

Key Features

• Grade 8 steel construction for high tensile and proof load requirements
• 1-1/2-6 UNC thread for coarse-pitch engagement in thick-section joints
• 10-inch length under head accommodates deep-stack bolted connections
• Partially threaded shank provides a bearing surface and reduces stress concentration at shear planes
• Bright uncoated finish maintains dimensional precision for close-tolerance holes
• Conforms to ASME B18.2.1 dimensional standards

Compatibility

Designed for use with standard 1-1/2-inch UNC heavy hex nuts and hardened washers in engineered bolted connections conforming to ASME B18.2.1 specifications.

Installation Notes

Installation of large-diameter Grade 8 fasteners should be performed by qualified mechanical or structural personnel using calibrated torque tooling appropriate to the bolt diameter and grade. Always consult the applicable engineering specification or torque table for the required clamp load before tightening. Ensure mating surfaces are clean and free of debris, and use hardened washers under both the head and nut where required by the joint design. Do not substitute a lower-grade nut or washer with a Grade 8 fastener.