Empire 51SS0025K Coupling Nut 1/4-20 Stainless Steel

Product Description

The EMPIRE 51SS0025K is a standard coupling nut designed to join two externally threaded fasteners along a common axis. Manufactured from 304 stainless steel with no additional coating, it provides corrosion resistance suitable for demanding mechanical and structural connections. The nut features a 1/4-20 right-hand thread and measures 7/8 inches overall length. Coupling nuts of this type are commonly installed by HVAC technicians, plumbers, electricians, and general tradespeople wherever threaded rod extension or two-bolt alignment is required in tight or exposed service environments.

This coupling nut is suited for light mechanical assembly, equipment mounting, threaded rod splicing, and structural fastening applications. The 304 stainless steel construction makes it a practical choice for installations where moisture exposure, mild chemical contact, or outdoor conditions are a factor. It is appropriate for both residential and light commercial trade applications across HVAC, plumbing, electrical, and general mechanical disciplines.

Key Features

• 304 stainless steel construction for corrosion resistance without a surface coating
• 1/4-20 right-hand thread for standard compatibility with UNC threaded fasteners
• 7/8 inch overall length provides adequate thread engagement for 1/4-inch rod or bolt connections
• Uncoated finish eliminates coating delamination risk in high-moisture or chemical environments
• Lightweight at 0.03 pounds, suitable for overhead or confined-space installations

Compatibility

Designed as a standard coupling nut for use with 1/4-20 UNC right-hand threaded rod, bolts, or studs in general trade and mechanical assembly applications.

Installation Notes

Install and remove using the appropriate wrench size for this hex coupling nut; avoid pipe wrenches or pliers that may deform the hex flats. Power down or de-energize any equipment before fastening or adjusting hardware in electrical enclosures or HVAC equipment. Thread engagement on both ends should be confirmed as full and even before applying final torque. Follow applicable mechanical codes and equipment manufacturer guidelines for fastener torque requirements.