Value Collection 451041BR Hex Cap Screw 1-1/4-12 X 3 in Grade 8

Product Description

The VALUE COLLECTION 451041BR is a fully threaded hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Manufactured from Grade 8 steel with a bright uncoated finish, this fastener meets ASME B18.2.1 standards for dimensional accuracy and load-bearing performance. The 1-1/4-12 UNF thread profile provides fine-pitch engagement suited for applications requiring precise tension control and strong clamping force. At 3 inches in length under the head and weighing 1.54 pounds, this is a heavy-duty fastener intended for use by machinists, millwrights, and mechanical contractors working on load-critical connections.

This cap screw is suited for use in heavy equipment, industrial machinery, hydraulic assemblies, and structural mechanical joints where Grade 8 tensile strength is specified. The fine UNF thread series makes it appropriate for applications involving vibration resistance or where precise preload adjustment is required during assembly. A 1-7/8-inch hex key drive size is required for installation, compatible with standard heavy-duty hex sockets and open-end wrenches of that size.

Key Features

• Grade 8 steel construction for high tensile and proof load ratings
• Fully threaded along the 3-inch length under the head
• 1-1/4-12 UNF fine-pitch thread for precise preload and vibration resistance
• Bright uncoated finish for standard dry or lubricated fastening environments
• Conforms to ASME B18.2.1 dimensional standards
• 1-7/8-inch hex drive size compatible with standard heavy-duty sockets

Compatibility

Designed as a standard inch-series hex head cap screw for use in any application specifying a 1-1/4-12 UNF fully threaded Grade 8 fastener per ASME B18.2.1.

Installation Notes

Installation should be performed by qualified mechanical trades using a properly rated 1-7/8-inch hex socket or open-end wrench. Always degrease or properly lubricate threads as required by the joint specification before installation, as friction coefficient directly affects achieved preload. Verify mating thread condition before assembly and do not exceed the rated torque specified by the equipment manufacturer or applicable engineering standard for Grade 8 fasteners of this size.