Value Collection 451100BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451100BR is a heavy-duty hex head cap screw sized at 1-1/2-12 UNF thread by 10 inches under the head. Manufactured from Grade 8 steel with a bright uncoated finish, this fastener is designed for high-strength bolted connections where superior tensile and proof load ratings are required. The partial threading configuration positions the unthreaded shank in the shear plane of the joint, which is a common engineering requirement in structural and industrial assemblies. At 5.81 pounds, this is a large-format fastener handled by millwrights, mechanical contractors, and heavy equipment maintenance technicians.

This screw is suited for demanding industrial, OEM, and MRO applications where inch-series UNF fasteners are specified. Typical installation scenarios include machinery frames, heavy fabrications, structural bolted connections, and equipment bases where Grade 8 minimum hardware is called out by the design engineer or maintenance specification. The 10-inch under-head length accommodates thick material stacks or long-reach clamping applications.

Key Features

• Grade 8 steel construction for high-strength, high-torque bolted joints
• 1-1/2-12 UNF thread form for fine-pitch engagement and reduced loosening under vibration
• 10-inch length under head accommodates thick material stacks and long-reach assemblies
• Partially threaded shank keeps the unthreaded portion in the shear plane where required
• Bright uncoated finish — specify additional coating or plating separately if corrosion protection is needed
• Meets ASME B18.2.1 dimensional standard for inch hex cap screws

Compatibility

Designed for use in inch-series bolted assemblies specifying a 1-1/2-12 UNF Grade 8 hex cap screw per ASME B18.2.1. Compatible with standard 1-1/2-12 UNF hex nuts and washers in industrial, OEM, and heavy-equipment maintenance applications.

Installation Notes

Installation should be performed by qualified millwrights, mechanical contractors, or maintenance technicians familiar with high-strength fastener torque procedures per ASME or applicable industry standards. Always clean and inspect mating threads before assembly, and use calibrated torque equipment appropriate for Grade 8 hardware at this diameter. The hex drive requires a 2-1/4-inch hex wrench or socket. Do not weld to or heat-treat this fastener after installation, as doing so will compromise the Grade 8 mechanical properties.