Protective Plug, Aluminum Alloy, Dust and Moisture Seal

The Protective Plug, with part number NAS818-4, is designed to serve as a dust and moisture seal for aircraft applications. Made from aluminum alloy 3003, this plug features a threaded design with a serrated drive type, ensuring secure installation. It has an overall diameter ranging from 0.580 inches to 0.690 inches. The plug incorporates a shoulder with a minimum thickness of 0.220 inches and a threaded portion measuring between 0.430 inches and 0.510 inches in length. It is compatible with various aircraft engines, including the F-117 and F-16C/D, making it a versatile choice for multiple military aircraft systems.