Value Collection 451036BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451036BR is a hex head cap screw engineered for heavy-duty fastening applications requiring high tensile strength. With a 1-1/4-7 UNC thread size and a 7-inch length under head, this partially threaded fastener is manufactured from Grade 8 steel with a bright, uncoated finish. It conforms to ASME B18.2.1 standards and is sized for use with a 1-11/16-inch hex key or wrench. At 2.93 pounds, the part is suited for structural, industrial, and mechanical assemblies where bolt grade and dimensional precision are critical.

This screw is used in industrial machinery, structural steel connections, heavy equipment assembly, and fabrication work where Grade 8 fastener strength is specified. The partial threading leaves a smooth shank section beneath the head, which helps maintain shear strength in bolted joint applications. It is a standard inch-series fastener installed by millwrights, ironworkers, maintenance technicians, and mechanical contractors working on equipment that demands high-strength hardware.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 1-1/4-7 UNC thread for standard inch-series compatibility
• 7-inch length under head accommodates thick material stacks
• Partially threaded shank maintains shear strength at the joint interface
• Bright, uncoated finish for bare steel applications
• Conforms to ASME B18.2.1 dimensional standard

Compatibility

Designed as a standard ASME B18.2.1 inch-series hex head cap screw suitable for use in any application specifying a 1-1/4-7 UNC Grade 8 fastener with a 7-inch length under head.

Installation Notes

Installation is performed using a 1-11/16-inch open-end, box-end, or socket wrench. Always confirm mating thread and material grade requirements before installation. Apply appropriate torque per the engineering specification for Grade 8 fasteners at this diameter and do not substitute a lower-grade fastener in a Grade 8-specified joint. Inspect threads for damage before installation and verify the joint is properly aligned before final tightening.