Value Collection 451055BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451055BR is a fully threaded hex head cap screw designed for heavy-duty bolted assemblies in industrial, mechanical, and structural applications. Manufactured from Grade 8 steel with a bright uncoated finish, this fastener meets ASME B18.2.1 standards for dimensional accuracy and performance. It features a 1-1/2-6 UNC thread size, a 3-inch length under head, and a 2-1/4-inch hex key drive. At 0.05 pounds, the part is sized for high-strength connections where torque and tensile requirements exceed what lower-grade fasteners can handle. Licensed tradespeople and maintenance professionals are the primary installers.

This cap screw is suited for use in heavy equipment assembly, machinery frames, structural steel connections, and maintenance repair operations where Grade 8 tensile strength is specified. The fully threaded design allows maximum thread engagement across the full length of the fastener, making it appropriate for shorter through-bolt applications and standard tapped-hole installations. The UNC thread form is compatible with standard inch-series tapped holes and nuts.

Key Features

• Grade 8 steel construction for high tensile and proof-load requirements
• Fully threaded 1-1/2-6 UNC along the full 3-inch length under head
• Bright uncoated finish — suitable for use with standard hardened washers and Grade 8 nuts
• Meets ASME B18.2.1 dimensional standards for hex cap screws
• 2-1/4-inch hex drive size for use with standard open-end, box, or impact wrenches

Compatibility

Designed as a standard inch-series Grade 8 hex head cap screw for use in any application requiring a 1-1/2-6 UNC threaded fastener with a 3-inch length under head per ASME B18.2.1.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or maintenance technician familiar with high-strength fastener procedures. Always verify mating thread condition and use hardened Grade 8 washers and nuts rated to the same grade. Follow applicable torque specifications from the equipment manufacturer or relevant engineering standards — no torque value is supplied with this part. Do not install in applications requiring a corrosion-resistant or plated finish without first confirming compatibility with the service environment.