Value Collection 451034BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451034BR is a Grade 8 steel hex head cap screw sized 1-1/4-7 UNC x 6 inches, partially threaded and uncoated (bright finish). Manufactured to ASME B18.2.1 standards, this fastener is designed for high-strength bolted connections in heavy-duty mechanical, structural, and industrial applications. Grade 8 material provides significantly higher tensile strength than Grades 2 or 5, making it a standard choice when joint integrity under load is critical. The hex drive accepts a 1-11/16 inch wrench. Installation is performed by mechanics, millwrights, and field technicians working on equipment assemblies, mounting structures, and machinery frames.

This cap screw is suited for use in industrial machinery assembly, structural steel connections, heavy equipment mounting, and similar applications requiring a large-diameter, high-strength UNC fastener. The partial thread configuration is typical for clamping applications where the unthreaded shank provides shear resistance across the joint interface. It is sold individually and is appropriate for both OEM assembly and field service replacement work.

Key Features

• Grade 8 steel construction for high tensile strength in demanding bolted joints
• Partially threaded shank provides shear resistance across clamped interfaces
• 1-1/4-7 UNC thread form for broad compatibility with standard nuts and tapped holes
• Bright uncoated finish - suitable for dry or lightly oiled indoor environments
• Meets ASME B18.2.1 dimensional standards for hex head cap screws
• 1-11/16 inch hex key (wrench) size for use with standard open-end, box, or impact tooling

Compatibility

Designed for use with standard 1-1/4-7 UNC hex nuts, washers, and tapped holes conforming to ASME and ANSI inch-series threading standards in Grade 8 or equivalent high-strength fastener applications.

Installation Notes

Installation should be performed by a qualified mechanic or millwright familiar with high-strength fastener torque requirements for Grade 8 hardware. Always consult the applicable engineering specification or equipment service manual for required torque values before tightening. Inspect mating threads and bearing surfaces for damage or contamination before assembly. Apply a thread lubricant or anti-seize only when specified by the joint design, as lubrication affects torque-tension relationships for Grade 8 fasteners.