Value Collection 451094BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451094BR is a hex head cap screw designed for heavy-duty fastening applications where high strength and precise thread engagement are required. Manufactured from Grade 8 steel with a bright uncoated finish, this fastener features a 1-1/2-12 UNF thread form and a 6-1/2 inch length under the head with partial threading. It conforms to ASME B18.2.1 dimensional standards, making it a reliable choice for structural assemblies, machinery, and equipment where torque capacity and dimensional consistency matter. This screw weighs 4.13 pounds and is sized for a 2-1/4 inch hex key or socket drive.

This cap screw is suited for industrial, mechanical, and trade applications requiring an inch-series fine-thread fastener in a large diameter. Partial threading provides a smooth shank section that can be used as a precision locating feature or to bear shear loads in a joint. Typical installations include heavy equipment assembly, structural steel fabrication, and mechanical systems where Grade 8 strength is specified by engineering requirements.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 1-1/2-12 UNF thread form — fine-thread series for enhanced thread engagement and vibration resistance
• Partially threaded shank provides a bearing surface for shear load and locating applications
• Bright uncoated finish — suitable for use as-is or for post-installation coating
• Conforms to ASME B18.2.1 dimensional standards for consistent fitment
• 2-1/4 inch hex drive for use with standard impact sockets or combination wrenches

Compatibility

Designed as a standard inch-series hex head cap screw for use in any application specifying a 1-1/2-12 UNF Grade 8 fastener per ASME B18.2.1.

Installation Notes

Installation should be performed by qualified trades or mechanical technicians following applicable engineering specifications and torque requirements for Grade 8 fasteners at this diameter. Use a 2-1/4 inch socket or hex wrench rated for the applied torque. Ensure mating threads are clean, free of debris, and properly tapped to 1-1/2-12 UNF before installation. Do not substitute Grade 5 or lower-rated hardware in applications that specify Grade 8.