A-A-52420A, COMMERCIAL ITEM DESCRIPTION: PLUG, EXPANSION (05-APR-2013) [SUPERSEDING MIL-P-20691C AND MS35648A]

A-A-52420A, COMMERCIAL ITEM DESCRIPTION: PLUG, EXPANSION (05-APR-2013) [SUPERSEDING MIL-P-20691C AND MS35648A]., The General Services Administration has authorized the use of this commercial item description (CID) as a replacement for MIL-P-20691C and MS35648A, which are canceled. This commercial item description (CID) covers the requirements of a curved, circular steel disc expansion plug used for closing holes in castings and other similar openings. The expansion plug is referred to herein as “plug”.