Hillman Fasteners 180421 Hex Nut Tri Alloy 7/8-9

Product Description

The HILLMAN FASTENERS 180421 is a tri-alloy hex nut sized 7/8-9, designed for heavy-duty fastening applications in mechanical and structural assemblies. Tri-alloy construction provides enhanced strength and corrosion resistance compared to standard carbon steel hardware. The 7/8-9 designation indicates a 7/8-inch nominal thread diameter with a 9 threads-per-inch (TPI) coarse thread pitch, conforming to unified national coarse (UNC) standards. This nut is used by contractors, tradespeople, and maintenance professionals who require reliable, high-load threaded connections in demanding service environments.

The 180421 hex nut is suited for use in commercial and industrial fastening applications where structural integrity and thread engagement are critical. It is appropriate for use with 7/8-9 UNC bolts and threaded rod in steel fabrication, equipment mounting, and general mechanical assembly. The box-quantity packaging makes it practical for job-site use or shop stock replenishment.

Key Features

• 7/8-9 UNC coarse thread pattern for broad bolt and rod compatibility
• Tri-alloy material for improved strength and corrosion resistance over standard steel
• Standard hex geometry accepts common wrenches and impact sockets
• Box quantity packaging suited for trade and production use

Compatibility

Designed for use with 7/8-9 UNC threaded fasteners including bolts and threaded rod in standard mechanical and structural assemblies.

Installation Notes

Installation should be performed by qualified tradespeople following applicable mechanical and structural codes. Always ensure mating bolt threads are clean and free of damage before assembly. Use an appropriately sized wrench or impact socket rated for the fastener size. Consult project specifications for required torque values, as none are defined by this product listing.