Value Collection HNI81371-010BX Hex Nut 1-3/8-6 Grade 8

Product Description

The VALUE COLLECTION HNI81371-010BX is a heavy-duty hex nut rated Grade 8, designed for high-strength bolted connections in industrial, mechanical, and structural applications. It features a 1-3/8-6 UNC thread size with right-hand threading and measures 2-1/16 inches across the flats. The zinc yellow dichromate finish provides corrosion resistance suitable for demanding service environments. At approximately 1 pound, this nut is built from Grade 8 steel, making it appropriate for high-load fastening scenarios where fastener integrity is critical. Machinists, millwrights, and maintenance technicians working on heavy equipment, structural assemblies, and industrial machinery rely on this grade of fastener.

This hex nut is suited for use in industrial maintenance, heavy equipment repair, structural steel fabrication, and general mechanical assembly. The 1-3/8-6 UNC coarse thread specification is widely used across agricultural equipment, construction machinery, and manufacturing fixtures. The Grade 8 rating indicates high tensile strength, making it appropriate where standard-grade fasteners would be insufficient under load or vibration.

Key Features

• Grade 8 steel construction for high tensile strength and load-bearing capacity
• 1-3/8-6 UNC coarse right-hand thread for broad compatibility with standard fastener systems
• Zinc yellow dichromate finish for enhanced corrosion resistance
• 2-1/16 inches across flats for use with standard heavy-duty wrenching tools
• 1-11/64 inch height provides adequate thread engagement for high-strength applications

Compatibility

Designed for use with Grade 8 or equivalent 1-3/8-6 UNC threaded bolts and studs in industrial, structural, and heavy mechanical assemblies.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or maintenance technician familiar with high-strength fastener practices. Always degrease or prepare mating threads before installation and torque to the specification required by the assembly drawing or applicable engineering standard. Do not mix Grade 8 nuts with lower-grade fastener components in high-load joints. Follow applicable standards such as ASME B18.2.2 for proper nut seating and engagement.