Value Collection HNI81501-010BX Hex Nut 1-1/2-6 Grade 8

Product Description

The VALUE COLLECTION HNI81501-010BX is a heavy-duty hex nut sized 1-1/2-6 UNC, manufactured from Grade 8 steel with a zinc yellow dichromate finish. Grade 8 is the highest common SAE fastener grade for carbon steel, making this nut suitable for high-stress structural and mechanical assemblies. The zinc yellow dichromate coating provides corrosion resistance and is identifiable by its characteristic gold-yellow color. At 2.25 inches across flats and a height of 1.281 inches, this is a large-format nut intended for heavy-duty bolted connections. It ships individually and is the correct mating hardware for 1-1/2-6 UNC Grade 8 bolt assemblies.

This hex nut is used in industrial, construction, agricultural, and heavy equipment applications where high clamping force and resistance to loosening are required. Right-hand thread direction is standard for the vast majority of mechanical assemblies. It is installed by licensed millwrights, ironworkers, maintenance mechanics, and experienced tradespeople working on structural steel, heavy machinery, conveyor systems, and similar load-bearing equipment.

Key Features

• Grade 8 steel construction for high tensile and proof load ratings in demanding fastener applications
• Zinc yellow dichromate finish provides corrosion resistance and visual grade identification
• 1-1/2-6 UNC thread size with right-hand thread direction for standard bolt compatibility
• 2.25 inches across flats for use with standard heavy hex wrench or socket tooling
• Height of 1.281 inches provides full thread engagement depth for secure clamping

Compatibility

Designed for use with 1-1/2-6 UNC Grade 8 threaded fasteners in heavy-duty bolted assemblies requiring high-strength hardware.

Installation Notes

Installation should follow applicable torque specifications for Grade 8 fasteners as defined by engineering drawings or recognized fastener standards such as ASME or SAE guidelines. Always ensure the mating bolt is the same thread standard, size, and grade before assembly. Use properly rated hand tools or torque wrenches rated for large-diameter fasteners. Inspect threads for damage or contamination before assembly to avoid galling or false torque readings.