5340-00-197-0372 (HP1000B64)
NSN 5340-00-197-0372 (NIIN 00-197-0372) is an expansion plug in Federal Supply Class 5340, Hardware, Commercial — a relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. Manufacturer part number HP1000B64 (Hubbard M D Spring Co Inc, CAGE 73287); also referenced as 137183, X137183 (General Motors LLC).
NIIN assigned January 1963; DEMIL A (none required); export Schedule B 8402.90.0090. Supersedes 5340-00-363-6025 (1961).