Value Collection 451162BR Hex Head Cap Screw 7/8-9x7.5in Grade 8

Product Description

The VALUE COLLECTION 451162BR is a Grade 8 steel hex head cap screw with a 7/8-9 UNC thread and a 7-1/2 inch length under head. It features partial threading and an uncoated, bright finish. This fastener is manufactured to ASME B18.2.1 standards, making it suitable for high-strength bolted connections in heavy-duty assemblies. Mechanical contractors, millwrights, pipefitters, and structural fabricators rely on Grade 8 hardware when joints must withstand significant tensile and shear loads. The 7/8-9 UNC thread pitch is a coarse-thread designation, well suited to thick steel members and applications where rapid assembly and vibration resistance matter.

This cap screw is used in industrial machinery, structural steel connections, heavy equipment repair, and general fabrication where high-strength fasteners are required. Its large 7-1/2 inch body length accommodates thick flanges, stacked members, or deep through-bolt applications. The uncoated bright finish is appropriate for dry indoor environments or applications where a specific coating will be applied in the field. Tradespeople working in HVAC equipment mounting, mechanical equipment bases, and structural support frames commonly specify Grade 8 hardware of this size.

Key Features

• Grade 8 steel construction provides high tensile strength for demanding structural and mechanical applications
• 7/8-9 UNC coarse thread for reliable engagement in thick steel members
• 7-1/2 inch length under head accommodates deep through-bolt and thick-flange installations
• Partially threaded shank allows the unthreaded body to bear shear loads across the joint
• Bright uncoated finish meets ASME B18.2.1 dimensional standards
• 1-5/16 inch hex key size for use with standard heavy-duty wrenching tools

Compatibility

Designed as a standard ASME B18.2.1 inch-series hex head cap screw suitable for use with 7/8-9 UNC nuts and tapped holes in Grade 8 or compatible high-strength applications.

Installation Notes

Installation should be performed by qualified mechanical or structural tradespeople following applicable codes and torque specifications for Grade 8 fasteners. De-energize and lock out any equipment before fastener replacement or installation on live machinery. Use a calibrated torque wrench and the appropriate 1-5/16 inch hex wrench or socket to achieve proper clamp load. Do not mix Grade 8 hardware with lower-grade nuts or tapped holes that are not rated for the corresponding load.