Value Collection 39240 Hex Cap Screw 1-1/4-7 X 3 in Grade 8 5pk

Product Description

The VALUE COLLECTION 39240 is a fully threaded hex head cap screw designed for heavy-duty fastening applications in structural, mechanical, and industrial assemblies. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this fastener delivers high tensile strength and corrosion resistance suitable for demanding environments. The 1-1/4-7 UNC thread size and 3-inch length under head make it well suited for thick-section joining where full thread engagement is required. Sold in a pack of 5, this screw conforms to ASME B18.2.1 dimensional standards. Machinists, millwrights, maintenance technicians, and general contractors are the typical installers.

This hex head cap screw is used wherever high-strength bolted connections are needed in inch-measurement systems. Typical applications include equipment mounting, structural steel connections, heavy machinery assembly, and maintenance-repair-operations (MRO) work across manufacturing, construction, and industrial service environments. The fully threaded shank ensures maximum thread engagement across the full clamped length, which is especially useful in through-bolt configurations and applications with variable grip lengths.

Key Features

• Grade 8 steel construction provides high tensile and proof-load strength for structural fastening
• Zinc yellow dichromate finish offers corrosion resistance and visual identification as a high-strength fastener
• Fully threaded shank allows flexible grip-length use and full engagement in through-hole applications
• 1-1/4-7 UNC thread standard ensures compatibility with standard inch-series nuts and tapped holes
• Conforms to ASME B18.2.1 for dimensional accuracy and interchangeability
• Sold in a pack of 5 to support small-quantity service and repair needs

Compatibility

Designed for use with standard 1-1/4-7 UNC inch-series hex nuts, heavy hex nuts, and tapped holes conforming to UNC thread specifications in Grade 8 or equivalent high-strength applications.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using standard hex wrenches or impact tooling sized for 1-1/4-inch hex fasteners. Always ensure mating threads and seating surfaces are clean and free of debris before installation. Grade 8 fasteners should be torqued to values specified by the equipment manufacturer or applicable engineering standards — do not substitute a lower-grade fastener in Grade 8 applications. Follow applicable industry and facility safety procedures when working on machinery or structural assemblies.