Value Collection 451788BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451788BR is a heavy-duty hex head cap screw engineered for high-stress structural and mechanical fastening applications. It measures 1-1/2-6 thread size by 16 inches in length under head, with a Unified National Coarse (UNC) thread form and partial threading along the shank. Manufactured from Grade 8 steel with a bright uncoated finish, this fastener meets ASME B18.2.1 dimensional standards. At 8.92 pounds, this is a large-format fastener intended for industrial assemblies, heavy equipment, and structural connections where high tensile and proof load strength are required.

This cap screw is suited for industrial maintenance, heavy equipment fabrication, structural steel assembly, and general mechanical applications where Grade 8 load ratings are specified. The partially threaded shank provides a smooth bearing surface that resists shear forces in bolted joints. A 2-1/4 inch hex key size accommodates standard heavy-duty impact or torque wrenches. Licensed machinists, millwrights, ironworkers, and industrial mechanics are the primary installers of fasteners at this size class.

Key Features

• Grade 8 steel construction meets high tensile strength requirements for structural and heavy mechanical fastening
• Partially threaded shank provides shear resistance and proper bolt grip in thick-section joints
• ASME B18.2.1 compliance ensures dimensional accuracy and interchangeability with standard hardware
• UNC thread form for compatibility with standard inch-system nuts and tapped holes
• Bright uncoated finish suitable for use with applied lubricants or customer-specified coatings
• 2-1/4 inch hex drive accommodates standard heavy industrial wrenches and impact tooling

Compatibility

Designed as a standard ASME B18.2.1 inch-series hex head cap screw for use with any 1-1/2-6 UNC threaded nut, heavy hex nut, or tapped hole meeting the same thread standard.

Installation Notes

Installation should be performed by qualified mechanics or ironworkers familiar with torque requirements for Grade 8 fasteners at this thread size. Always verify thread engagement depth and mating nut or tapped-hole grade before assembly. Apply a suitable thread lubricant or anti-seize compound as required by the application specification. Use properly rated torque equipment to achieve the specified clamp load without yielding the fastener.