Value Collection HNI2187-005BX Hex Nut 1-7/8-5 Grade 2

Product Description

The VALUE COLLECTION HNI2187-005BX is a heavy hex nut sized 1-7/8-5, meaning a 1-7/8 inch nominal thread diameter with 5 threads per inch (TPI) on a Unified National (UN) thread standard. Manufactured from Grade 2, Grade A steel with a bright uncoated finish, this nut is suited for general-purpose bolted assemblies where a large-diameter fastener is required. The 2-3/4 inch width across flats and 1-3/4 inch height make it appropriate for structural connections and heavy mechanical applications. Installers working in construction, industrial maintenance, or equipment assembly will find this a standard replacement or new-assembly fastener for large-diameter threaded rod and bolt configurations.

This hex nut is used in heavy structural bolting, machinery mounting, anchor bolt assemblies, and large-diameter threaded rod applications. Its right-hand thread direction follows standard convention, compatible with the vast majority of bolts and threaded rod used in construction and industrial settings. The uncoated bright finish is appropriate for indoor or protected applications where corrosion resistance is not a primary requirement. Trades including ironworkers, millwrights, pipefitters, and general contractors commonly stock this size for heavy bolted connections.

Key Features

• 1-7/8-5 thread size on the Unified National (UN) thread standard
• Grade 2, Grade A steel construction for general-purpose structural use
• Right-hand thread direction matches standard bolt and threaded rod inventory
• 2-3/4 inch width across flats for use with standard large-drive wrenches and impact tools
• Bright uncoated finish — no coating to crack, flake, or affect thread tolerance
• 1-3/4 inch height provides full thread engagement depth for the 1-7/8 inch diameter

Compatibility

Designed for use with 1-7/8-5 UN-threaded bolts and threaded rod. Suitable for general structural and industrial bolted assemblies requiring a large-diameter hex nut in Grade 2 steel.

Installation Notes

Installation requires a large adjustable wrench, box-end wrench, or impact socket sized for a 2-3/4 inch across-flats nut. Always ensure the mating bolt or threaded rod is the same thread standard (UN) and thread direction (right-hand) before assembly. Torque to the value specified in the applicable project or equipment specification — do not estimate torque for large-diameter structural fasteners. Inspect threads on both the nut and the mating fastener for damage before installation.