Value Collection 451145BR Hex Head Cap Screw 3/4-10 X 9 in Grade 8

Product Description

The VALUE COLLECTION 451145BR is a Grade 8 steel hex head cap screw with a 3/4-10 UNC thread and a 9-inch length under head. Partially threaded and left with a bright, uncoated finish, this fastener is built for high-strength bolted connections in structural, mechanical, and heavy equipment applications. At 1.25 pounds, it is a substantial fastener suited for joints that demand tensile strength and resistance to loosening under load. It conforms to ASME B18.2.1, the standard governing dimensions and tolerances for inch-series hex cap screws. Machinists, millwrights, ironworkers, and maintenance technicians are the primary installers.

This cap screw is used in heavy-duty mechanical assemblies, structural steel connections, and industrial machinery where Grade 8 fastener strength is required. The partial threading is appropriate for through-bolt or long-grip applications where a full shank without threads is needed to bear shear loads across the joint. It is a common choice in manufacturing plants, fabrication shops, and field equipment maintenance where ASME-dimensioned inch-series hardware is specified.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 3/4-10 UNC thread for broad compatibility with standard inch-series nuts and tapped holes
• 9-inch length under head accommodates thick material stacks and long-grip assemblies
• Partially threaded shank allows the unthreaded body to carry shear loads at the joint interface
• Bright, uncoated finish meets ASME B18.2.1 dimensional standards out of the box
• 1-1/8-inch hex key size compatible with standard industrial wrenching tools

Compatibility

Designed for use with 3/4-10 UNC hex nuts, flat washers, and tapped holes conforming to ASME inch-series standards in Grade 8 bolted joint applications.

Installation Notes

Installation is performed by qualified millwrights, ironworkers, or maintenance technicians using a 1-1/8-inch wrench or socket. Follow the applicable engineering specification or torque table for Grade 8 fasteners at 3/4-10 UNC when tightening. Clean mating surfaces and confirm hole alignment before driving the fastener. Do not weld to or heat-treat this fastener after installation, as post-process heat exposure will alter the Grade 8 mechanical properties.