Value Collection HNFI80561-025BX Hex Nut 9/16-18 Grade 8

Product Description

The VALUE COLLECTION HNFI80561-025BX is a 9/16-18 UNF hex nut manufactured from Grade 8 steel with a zinc yellow dichromate finish. Grade 8 is a high-strength fastener classification suited for heavy-load bolted joints in structural, mechanical, and equipment assemblies. The zinc yellow dichromate coating provides corrosion resistance in environments where bare steel would oxidize. This nut features a right-hand thread, measures 7/8 inches across the flats, and has a height of 31/64 inches. It is sold in a minimum order quantity of 25 pieces per box. Mechanical contractors, millwrights, equipment fabricators, and maintenance technicians working on high-stress assemblies are the primary installers of this fastener.

This hex nut is appropriate for use in residential, commercial, and industrial applications wherever a 9/16-18 UNF threaded fastener connection is required. The Grade 8 strength rating makes it well suited for high-vibration machinery, structural bolting, and heavy equipment frames where lower-grade fasteners would be inadequate. The zinc yellow dichromate finish adds a layer of protection in moderately corrosive or outdoor-exposed service conditions. This nut pairs with any 9/16-18 UNF Grade 8 hex bolt or stud and is a standard off-the-shelf replacement in maintenance and repair operations.

Key Features

• Grade 8 steel construction for high-strength, heavy-load fastener applications
• 9/16-18 UNF right-hand thread for use with standard UNF threaded bolts and studs
• Zinc yellow dichromate finish provides corrosion resistance over bare steel
• 7/8-inch width across flats fits standard combination and box-end wrenches
• 31/64-inch nut height provides full thread engagement on standard bolt lengths
• Sold in a 25-piece minimum order quantity for job-site and shop stocking

Compatibility

Designed for use with 9/16-18 UNF Grade 8 hex bolts and threaded studs in structural, mechanical, and equipment assembly applications requiring a high-strength fastener.

Installation Notes

Installation is performed by hand-threading the nut onto the mating bolt or stud, then torquing with a standard combination wrench or socket to the fastener manufacturer or applicable code specification for the joint. De-energize or lock out equipment before replacing fasteners on mechanical or electrical assemblies per applicable OSHA lockout/tagout procedures. Do not mix Grade 8 nuts with lower-grade bolts or fasteners, as the assembly strength will be limited by the weaker component. Inspect threads for damage or contamination before installation to ensure full engagement.