FED-STD-H28/15A, FEDERAL STANDARD: SCREW-THREAD STANDARDS FOR FEDERAL SERVICES - SECTION 15 - ROLLED THREADS FOR SCREW-SHELLS FOR ELECTRIC LAMPHOLDERS AND LAMP BASES (07 JUN 1984)
FED-STD-H28/15A, FEDERAL STANDARD: SCREW-THREAD STANDARDS FOR FEDERAL SERVICES - SECTION 15 - ROLLED THREADS FOR SCREW-SHELLS FOR ELECTRIC LAMPHOLDERS AND LAMP BASES (07 JUN 1984).