Value Collection HNFI300-001BX Hex Nut 3-12 Grade 2

Product Description

The VALUE COLLECTION HNFI300-001BX is a heavy-duty hex nut designed for high-load fastening applications in industrial, mechanical, and structural assemblies. Manufactured from Grade 2, Grade A steel with a bright uncoated finish, this nut features a 3-12 thread size with a right-hand thread direction conforming to UN thread standards. At 4.5 inches across the flats and a height of approximately 2-37/64 inches, this is a large-format nut suited for demanding bolted connections. Licensed trade workers in mechanical, industrial maintenance, and construction fields regularly specify this size for heavy equipment and structural work.

This hex nut is appropriate for use in general industrial fastening, structural steel connections, heavy machinery assembly, and maintenance applications where a large-diameter UN-threaded fastener is required. Its Grade 2 material classification makes it suitable for non-critical structural and mechanical assemblies that do not require higher-grade alloy fasteners. The uncoated finish is compatible with environments where a protective coating is applied after installation or where bare steel is acceptable.

Key Features

• 3-12 thread size with right-hand UN thread standard
• Grade 2, Grade A steel construction for reliable general-purpose strength
• Bright uncoated finish suitable for post-installation coating or bare-steel applications
• 4.5 inches across flats for use with large-format wrenches and torque tools
• Height of approximately 2-37/64 inches providing full thread engagement depth
• Does not meet military specifications — intended for commercial and industrial use

Compatibility

Designed for use with 3-12 UN right-hand threaded bolts and studs in general industrial and structural fastening applications.

Installation Notes

Installation should be performed by a qualified mechanic or trades professional familiar with large-diameter fastener torque requirements. Always verify thread engagement and alignment before applying final torque. Use appropriate large-format wrenches or torque equipment rated for the fastener size. Ensure mating bolt or stud material grade is compatible with Grade 2 hardware to avoid mismatched joint strength.