Value Collection 99222 Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 99222 is a partially threaded hex head cap screw designed for heavy-duty fastening in structural and mechanical assemblies. Manufactured from Grade 8 steel with no finish coating applied, this fastener delivers the high tensile strength required for demanding bolted connections. With a thread size of 1-8 UNC and a length under head of 4.5 inches, it is sized for thick-section joints where a partially threaded shank provides improved shear resistance and a cleaner bearing surface between clamped parts. This screw conforms to ASME B18.2.1, the standard governing the dimensions and tolerances of inch-series hex head fasteners. Maintenance technicians, millwrights, and general contractors routinely specify this fastener type for equipment mounting, structural steel work, and heavy fabrication.

This fastener is suited for use in commercial and industrial applications where high-clamp-load bolted joints are required. Typical install scenarios include machinery bases, structural steel connections, equipment frames, and heavy-bracket assemblies. The uncoated finish makes it straightforward to apply thread lubricant or anti-seize compound as required by the application. It is sold in a package quantity of 10, making it practical for small jobs or sample ordering, with a minimum order quantity of 1 package.

Key Features

• Grade 8 steel construction provides high tensile and proof load strength for demanding bolted assemblies
• Partially threaded shank improves shear resistance and allows precise clamp-load distribution
• 1-8 UNC thread form is one of the most widely used coarse thread sizes in inch-series fastening
• Conforms to ASME B18.2.1 for dimensional accuracy and interchangeability
• Uncoated finish allows direct application of thread lubricants or anti-seize compounds
• Sold in packages of 10 with a minimum order quantity of 1 package

Compatibility

Designed as a standard inch-series hex head cap screw for use with 1-8 UNC threaded nuts, tapped holes, and heavy hex hardware conforming to ASME B18.2.1 dimensional requirements.

Installation Notes

Hex head cap screws of this size are typically installed by millwrights, ironworkers, or maintenance mechanics using a heavy-duty impact wrench or box-end wrench. Always verify the mating tapped hole or nut is rated for Grade 8 fastener loads before assembly. Apply thread lubricant or anti-seize compound as required by the joint specification. Do not mix Grade 8 fasteners with lower-grade nuts, as mismatched hardware can result in thread stripping or joint failure.