Value Collection 39124 Hex Head Cap Screw 1/2-13 X 8 in Grade 8

Product Description

The VALUE COLLECTION 39124 is a partially threaded hex head cap screw designed for heavy-duty fastening applications. It features a 1/2-13 UNC thread size and an 8-inch length under head, manufactured from Grade 8 steel for high tensile strength and resistance to shear forces. The zinc yellow dichromate finish provides corrosion resistance in demanding service environments. This fastener conforms to ASME B18.2.1 standards, making it a reliable choice for structural, mechanical, and industrial assembly work performed by maintenance technicians, millwrights, pipefitters, and other trade professionals.

This cap screw is suited for industrial equipment assembly, structural steel connections, heavy machinery maintenance, and mechanical installations where Grade 8 strength is specified. The partial threading allows for improved clamp load distribution in thick-material assemblies. It is sold in packages of 10, making it practical for both single repairs and small-batch production or maintenance work.

Key Features

• Grade 8 steel construction provides high tensile and proof load strength for demanding fastening applications
• 1/2-13 UNC thread form ensures broad compatibility with standard inch-series nuts and tapped holes
• 8-inch length under head accommodates thick material stacks and deep-reach fastening needs
• Partial threading supports proper clamp load and reduces stress concentration in joint assemblies
• Zinc yellow dichromate finish offers corrosion resistance in industrial and outdoor service conditions
• Conforms to ASME B18.2.1 dimensional standards for consistent fit and function

Compatibility

Designed as an OEM-style replacement or maintenance fastener for applications requiring 1/2-13 UNC hex head cap screws rated at Grade 8 strength in inch-series assemblies.

Installation Notes

Installation should be performed by qualified technicians following applicable ASME, AISC, or equipment manufacturer torque specifications for Grade 8 fasteners at 1/2-13 thread size. Always inspect mating threads for damage or contamination before installation. De-energize and lock out equipment before replacing structural fasteners in machinery. Do not mix Grade 8 fasteners with lower-grade nuts or threaded inserts, as mismatched hardware can compromise joint integrity.