101017679 - 1/4-20 Stainless Steel Rod Coupling Nut

Industrial Grade Stainless Steel Coupling for MRO Applications

The CPL 1/4-20 X1 1/4 SS18-8 is a premium threaded coupling designed for versatile industrial fastening and assembly tasks. Manufactured from 18-8 Stainless Steel (chemically equivalent to 304 stainless), this component offers exceptional resistance to corrosion, oxidation, and chemical degradation. It is an essential inventory item for Maintenance, Repair, and Operations (MRO) departments, providing a reliable solution for joining male-threaded components such as threaded rods, hanger bolts, and studs.

This coupling features a standard 1/4"-20 UNC (Unified National Coarse) thread pitch, making it compatible with a vast array of standard imperial fasteners. The 1-1/4 inch length ensures deep thread engagement, which is critical for distributing tensile loads across the threads and preventing stripping under stress. The hexagonal or round profile (depending on specific batch configuration) allows for easy tightening with standard wrenches or pliers, facilitating quick installation and adjustments in the field.

In engineering and facility maintenance, the material composition is paramount. 18-8 stainless steel contains approximately 18% chromium and 8% nickel, creating a passive oxide layer that protects the underlying metal from rust. This makes the coupling particularly suitable for use in environments with high humidity, exposure to cleaning agents, or outdoor weather conditions. Unlike carbon steel fasteners that rely on surface platings like zinc or black oxide—which can chip and fail—the corrosion resistance of this coupling is intrinsic to the material itself.

Whether utilized for suspending fixtures, extending the reach of anchor bolts, or acting as a spacer in machine assemblies, this coupling delivers consistent performance. Its precise machining ensures smooth threading, reducing the risk of galling during assembly. For professionals requiring dependable hardware that minimizes maintenance cycles and replacement costs, this stainless steel coupling is the optimal choice.