Value Collection 306105BR Hex Nut 1-3/4-12 Grade 8

Product Description

The VALUE COLLECTION 306105BR is a Grade 8 steel hex nut with a 1-3/4-12 UN thread size and a zinc yellow dichromate finish. It is used to fasten heavy-duty bolted assemblies in structural, industrial, and mechanical applications. The right-hand thread pattern and fine-pitch 12 TPI profile make it suitable for high-strength clamping loads. The zinc yellow dichromate coating provides a baseline level of corrosion resistance. At 2-3/4 inches across the flats and 1-1/2 inches in height, this is a large-format nut intended for heavy fastening work where Grade 8 material strength is required.

This hex nut fits large-diameter threaded fastener assemblies in industrial, construction, and heavy equipment applications. The 1-3/4-12 fine thread designation suits applications requiring higher thread engagement strength compared to coarse-pitch alternatives. Typical installation scenarios include structural steel connections, heavy machinery frames, and industrial equipment mounting. It is installed by millwrights, ironworkers, maintenance mechanics, and general industrial trades working with large-diameter fastener systems.

Key Features

• Grade 8 steel construction delivers high tensile and proof load ratings for demanding fastener applications
• 1-3/4-12 UN fine thread for strong thread engagement and precise clamping
• Right-hand thread direction, standard for the vast majority of threaded fastener assemblies
• Zinc yellow dichromate finish provides corrosion resistance in general-duty environments
• 2-3/4 inch width across flats and 1-1/2 inch height for use with standard heavy hex tooling

Compatibility

Designed for use with 1-3/4-12 UN externally threaded fasteners conforming to the Unified National thread standard. Verify thread class and pitch before installation. Does not meet military specifications.

Installation Notes

Installation should be performed by qualified mechanical or industrial trades familiar with large-diameter fastener torque procedures. Confirm mating bolt thread standard, pitch, and material grade before assembly. Use the correct size heavy hex wrench or socket sized for 2-3/4 inch across flats. Follow applicable torque specifications from the equipment manufacturer or a recognized fastener standard for Grade 8 hardware.