Value Collection 451047BR Hex Cap Screw 1-1/4-12 X 6 in Grade 8

Product Description

The VALUE COLLECTION 451047BR is a hex head cap screw designed for heavy-duty fastening applications in industrial, mechanical, and structural assemblies. Manufactured from Grade 8 steel with a bright, uncoated finish, this screw delivers high tensile strength suited to demanding bolted joints. The 1-1/4-12 UNF thread profile provides fine-thread engagement for precise torque control, and the partially threaded shank allows the unthreaded body to bear shear loads across joint interfaces. At 6 inches in length under the head, this fastener is well suited for thick-section assemblies. It conforms to ASME B18.2.1 dimensional standards. Mechanics, millwrights, and structural fabricators are the primary installers of this fastener class.

This cap screw is used across a wide range of industrial and commercial applications where high-strength, fine-thread fasteners are required. Typical installations include heavy equipment assembly, press frames, machine beds, structural steel connections, and hydraulic component mounting. The partially threaded configuration makes it particularly effective where a grip length is needed through stacked material before engaging the nut or threaded bore. It is sold individually, making it appropriate for replacement or low-quantity repair work.

Key Features

• Grade 8 steel construction provides high tensile and proof load strength for demanding fastening applications
• 1-1/4-12 UNF fine-thread profile delivers tighter thread engagement and improved resistance to loosening under vibration
• Partially threaded shank carries shear loads through the joint, reducing stress on thread roots
• Bright, uncoated finish maintains precise dimensional tolerances per ASME B18.2.1
• 1-7/8 inch hex key size accommodates standard heavy-hex tooling
• 6-inch length under head suits thick-section and multi-component stack-up assemblies

Compatibility

Designed as a standard ASME B18.2.1 inch-series hex head cap screw suitable for use with any 1-1/4-12 UNF threaded nut, insert, or tapped bore requiring a Grade 8 steel fastener.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or structural fabricator following applicable torque specifications for Grade 8 fasteners at this diameter and thread pitch. Always clean and inspect the mating threaded bore or nut before installation. Do not substitute a lower-grade fastener in any application engineered for Grade 8 strength. Consult applicable structural or mechanical codes when installing in load-bearing or safety-critical assemblies.