Value Collection 451044BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451044BR is a Grade 8 steel hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. With a 1-1/4-12 UNF thread and a 4-1/2 inch length under head, this fastener delivers the clamping force required in heavy-duty bolted joints. The partial threading allows for precise load distribution along the shank. Finished bright and uncoated, it is suited for dry or controlled indoor environments. Manufactured to ASME B18.2.1 standards, it meets dimensional requirements expected by maintenance, millwright, and industrial trade professionals.

This cap screw is used in applications where fine-thread engagement and high tensile strength are required, including machinery mounts, structural steel connections, hydraulic equipment, and heavy equipment repair. The 1-1/4-12 UNF thread designation indicates a fine-thread series, which provides greater resistance to loosening under vibration compared to coarse-thread equivalents. Suitable for use with standard Grade 8 hex nuts and hardened washers in inch-series assemblies.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 1-1/4-12 UNF fine thread for improved vibration resistance and precise torque control
• Partially threaded shank allows load to bear along the unthreaded body
• Bright uncoated finish suitable for dry service environments
• Conforms to ASME B18.2.1 dimensional standard
• 1-7/8 inch hex key size for use with standard open-end, box, or impact wrenches

Compatibility

Designed for use in inch-series bolted assemblies requiring a 1-1/4-12 UNF Grade 8 hex head cap screw per ASME B18.2.1. Compatible with standard Grade 8 hex nuts and hardened flat washers in the same thread series.

Installation Notes

Installation is typically performed by millwrights, maintenance mechanics, or industrial technicians using open-end, box-end, or impact wrenches sized for a 1-7/8 inch hex. Always confirm mating thread class and verify the joint design specifies Grade 8 fasteners before installation. Do not substitute uncoated fasteners in corrosive or outdoor environments without verifying suitability. Follow applicable industry torque guidelines for the joint category and fastener grade.