Value Collection 99220 Hex Head Cap Screw Grade 8 Steel

Product Description

The VALUE COLLECTION 99220 is a hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Sized at 1-8 thread with a 3.5-inch length under head, this fastener is partially threaded and conforms to ASME B18.2.1 standards. It is manufactured from Grade 8 steel, which is rated for demanding load and shear applications where lower-grade fasteners would be inadequate. The uncoated finish makes it suitable for environments where a secondary coating or plating will be applied post-installation. Machinists, millwrights, and maintenance technicians are the primary installers of this fastener class.

This screw is used in heavy-duty bolted joint assemblies across manufacturing, construction, and equipment maintenance settings. The partial threading supports clamping force distribution across unthreaded grip length, making it appropriate for applications with specific shear load requirements. The UNC thread standard ensures compatibility with standard inch-series nuts and tapped holes. Sold in a package quantity of 10, this fastener suits both production and service applications where consistent Grade 8 performance is required across multiple joint points.

Key Features

• Grade 8 steel construction rated for high-tensile and high-shear load requirements
• Partially threaded shank for controlled clamping and shear load distribution
• UNC thread standard for compatibility with standard inch-series hardware
• Conforms to ASME B18.2.1 dimensional and tolerance standards
• Uncoated finish suitable for post-installation plating or coating processes
• Sold in a pack of 10 for multi-point assembly applications

Compatibility

Designed for use with standard inch-series UNC nuts and tapped holes accepting a 1-8 thread pitch in Grade 8 or compatible high-strength bolted joint assemblies.

Installation Notes

Hex head cap screws in this size and grade are typically installed by millwrights, maintenance mechanics, or structural technicians using standard hex wrenches or impact tools. Always ensure the mating nut or tapped hole matches the UNC 1-8 thread specification before installation. Verify that the joint material and design can accommodate Grade 8 fastener preload to avoid crushing or yielding softer components. Follow applicable torque guidelines from the joint designer or relevant industry standards for the specific application.