Value Collection 451782BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451782BR is a heavy-duty hex head cap screw designed for high-strength fastening applications in structural, industrial, and mechanical assemblies. It features a 1-1/2-6 UNC thread size with a 14-inch length under the head and is manufactured from Grade 8 steel with a bright, uncoated finish. Partial threading along the shank provides bearing strength in bolted connections where full thread engagement is not required. This fastener conforms to ASME B18.2.1 dimensional standards and weighs 7.92 pounds. It is driven with a 2-1/4-inch hex key or corresponding socket and is suited for installations requiring a high-tensile, inch-series fastener.

This cap screw is used in heavy industrial equipment, structural steel fabrication, machinery mounts, and similar applications where Grade 8 strength is specified. The large diameter and 14-inch shank make it appropriate for thick-section bolted joints in manufacturing facilities, fabrication shops, and on-site structural work. Machinists, millwrights, ironworkers, and maintenance mechanics are the typical trades that install fasteners of this size and grade.

Key Features

• Grade 8 steel construction provides high tensile and proof-load strength for demanding structural and mechanical applications
• Partially threaded shank maintains shear strength in bolted joint assemblies
• 1-1/2-6 UNC thread form ensures compatibility with standard inch-series nuts and tapped holes
• Bright, uncoated finish allows for straightforward inspection and is ready for field-applied coatings if required
• Conforms to ASME B18.2.1 for consistent dimensional accuracy across the fastener body and head
• Driven with a 2-1/4-inch hex socket for positive wrench engagement under high torque

Compatibility

Designed for use with standard 1-1/2-6 UNC inch-series heavy hex nuts and washers in Grade 8 bolted joint assemblies per ASME B18.2.1 specifications.

Installation Notes

Installation should be performed by qualified millwrights, ironworkers, or maintenance mechanics following applicable structural or equipment torque specifications for Grade 8 fasteners. Always confirm the mating nut and tapped hole are rated for the same grade and thread class before assembly. Use calibrated torque tooling appropriate for large-diameter fasteners to achieve proper clamp load. Inspect threads for damage before installation and do not impact-drive without verifying thread engagement.