5220-00-927-0717 (WT50264)
NSN 5220-00-927-0717 (NIIN 00-927-0717) is a block set in Federal Supply Class 5220, Inspection Gages And Precision Layout Tools — a group of hardened metallic blocks with parallel surfaces superfinished flat to permit wringing together. Manufacturer part number WT50264 (Woodward, Inc., CAGE 66503).
NIIN assigned August 1966; DEMIL A (none required); export Schedule B 9017.30.8000.