Value Collection 451097BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451097BR is a Grade 8 steel hex head cap screw sized 1-1/2-12 UNF by 8 inches under head, supplied in a bright uncoated finish with partial threading. Grade 8 steel delivers high tensile strength suitable for demanding bolted joints in heavy equipment, structural assemblies, and industrial machinery. The partially threaded shank provides a bearing surface that resists shear loads at the joint interface. This fastener meets ASME B18.2.1 dimensional standards and is installed using a 2-1/4 inch hex key or matching socket. Machinists, millwrights, and maintenance technicians are the typical installers.

This cap screw is suited for heavy-duty bolted connections in industrial, agricultural, construction, and OEM equipment applications where a fine-thread UNF pattern is specified. The 1-1/2-12 thread pitch provides precise clamping adjustment and superior resistance to loosening under vibration compared to coarse-thread equivalents. The 8-inch length under head accommodates thick flanges, structural members, or stacked components requiring a long grip length. It is sold individually, making it practical for repair and replacement jobs as well as prototype builds.

Key Features

• Grade 8 steel construction for high tensile and proof load capacity
• 1-1/2-12 UNF fine thread for precise clamping and vibration resistance
• 8 inches length under head for thick-grip bolted joint applications
• Partially threaded shank provides a shear-bearing surface at the joint
• Bright uncoated finish — compatible with field plating or coating as needed
• Meets ASME B18.2.1 dimensional standard

Compatibility

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

Installation Notes

Installation is performed by machinists, millwrights, or qualified maintenance personnel using a 2-1/4 inch hex socket or wrench. De-energize all equipment and relieve system pressure before disassembling bolted joints. Apply thread lubricant or anti-seize as required by the joint specification; always follow the equipment manufacturer torque table for the fastener grade and size. Inspect threads for damage before installation and discard any fastener with deformed or corroded threads.