Value Collection 451180BR Hex Head Cap Screw Grade 8

Product Description

The Value Collection 451180BR is a Grade 8 steel hex head cap screw designed for heavy-duty fastening in structural and mechanical assemblies. It features a 1-8 thread size (UNC) and a 6.5-inch length under the head with partial threading, making it suitable for applications that require a grip length and a bolt shank that resists shear loads. Manufactured to ASME B18.2.1 standards, this fastener delivers the high tensile strength characteristic of Grade 8 hardware. The bright uncoated finish is appropriate for indoor or controlled environments where corrosion exposure is minimal. It weighs approximately 1.7 pounds.

This cap screw is used in industrial machinery, heavy equipment, structural steel connections, and fabrication applications where high-clamp-load fasteners are required. The large 1-inch diameter and partial thread configuration make it a common choice for bolted flange joints, equipment bases, and frame assemblies. It is typically installed by millwrights, maintenance mechanics, ironworkers, and heavy equipment technicians working on both OEM builds and field repairs.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• Partially threaded shank provides shear resistance and accurate grip length control
• UNC thread form (1-8 threads per inch) for broad nut and tapped-hole compatibility
• Meets ASME B18.2.1 dimensional standards for hex head cap screws
• Bright uncoated finish — ready for use or secondary coating as needed
• Hex key size of 1.5 inches for standard wrench engagement

Compatibility

Designed for use with 1-8 UNC nuts, washers, and tapped holes conforming to Unified National Coarse thread standards. Suitable for any application specifying a Grade 8 hex cap screw to ASME B18.2.1.

Installation Notes

Installation should be performed by a qualified mechanic or ironworker familiar with high-strength fastener procedures. Use an appropriate 1.5-inch hex wrench or impact socket and follow the torque specifications defined by the equipment manufacturer or applicable structural code for Grade 8 fasteners at this diameter. Always verify that mating threads are clean and undamaged before assembly. Do not mix Grade 8 fasteners with lower-grade nuts or threaded inserts not rated for equivalent load.