FED-STD-H28/20B (CHANGE NOTICE 1), FEDERAL STANDARDS: SCREW-THREAD STANDARDS FOR FEDERAL SERVICES SECTION 20 INSPECTION METHODS FOR ACCEPTABILITY OF UN, UNR, UNJ, M, AND MJ SCREW THREADS (21 DEC 1994)

FED-STD-H28/20B (CHANGE NOTICE 1), FEDERAL STANDARDS: SCREW-THREAD STANDARDS FOR FEDERAL SERVICES SECTION 20 INSPECTION METHODS FOR ACCEPTABILITY OF UN, UNR, UNJ, M, AND MJ SCREW THREADS (21 DEC 1994)., The following changes, which form a part of FED-STD-H28/20B dated 10 March 1994, are approved by the Commissioner, Federal Supply Service. General Services Administration, for the use of all Federal agencies,