Value Collection 451715BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451715BR is a Grade 8 steel hex head cap screw with a 1-3/8-12 UNF thread and a 6-inch length under head. It is partially threaded and supplied in a bright, uncoated finish. Manufactured to ASME B18.2.1 standards, this fastener is built for high-strength bolted joint applications where precise thread engagement and reliable clamping force are required. Machinists, millwrights, and maintenance technicians reach for Grade 8 hardware in demanding structural and mechanical assemblies where standard-grade fasteners are not sufficient.

This cap screw is suited for heavy equipment assembly, industrial machinery, structural steel connections, and other high-load applications requiring fine-thread UNF fasteners in large diameters. The 1-3/8-12 thread pitch makes it appropriate for assemblies where greater thread engagement and resistance to vibration loosening are priorities over coarse-thread alternatives. It is commonly used in manufacturing, fabrication shops, and field maintenance on heavy-duty mechanical systems.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 1-3/8-12 UNF thread provides finer pitch for improved vibration resistance
• Partially threaded shank allows for precise grip length in bolted joints
• Bright, uncoated finish for use where coating-free contact surfaces are required
• Meets ASME B18.2.1 dimensional standards for hex head cap screws
• 2-1/16 inch hex key size for use with standard industrial wrenching tools

Compatibility

Designed as a standard-dimension UNF hex head cap screw for use in any application requiring a 1-3/8-12 thread, 6-inch-under-head length, Grade 8 fastener conforming to ASME B18.2.1.

Installation Notes

Installation should be performed by qualified machinists, millwrights, or maintenance technicians following applicable industry standards and equipment manufacturer guidelines. Always confirm mating thread class and material compatibility before installation. Use a properly sized 2-1/16 inch wrench or socket to avoid fastener damage. Verify joint design, clamp load requirements, and any applicable torque specifications from the equipment OEM before final tightening.