Lennox 73K93 Nut 320074-702 securing the long-term reliability of

securing the long-term reliability of your HVACR refrigeration system by mitigating the risk of mechanical failure caused by flooded starts

Its robust construction supports an operating range of 23-113°F and 0-85% non-condensing humidity

Designed as a precise OEM replacement part

or erratic diagnostic flash codes

Versatile Mounting: Supports standard thru-bolt or cradle/band mounting for faster field installation

Lennox 73K93 Nut 320074-702 securing the long-term reliability ofThe Lennox 73K93 Retainer Nut is a critical OEM replacement part designed for high vibration HVACR environments. This 1 4" thread zinc plated nut (replaces 66A03 and 73K9301) provides essential component fixation for residential condensers, air handlers, and package units including CHA16, CHP16, and GCS16 series. Engineered for industrial grade durability, its zinc plating offers superior corrosion resistance, ensuring a secure mechanical fit and