FED-STD-H28/15B, FEDERAL STANDARD: SCREW-THREAD STANDARDS FOR FEDERAL SERVICES - SECTION 15 - ROLLED THREADS FOR SCREW-SHELLS FOR ELECTRIC LAMPHOLDERS AND LAMP BASES (10 MAR 1994)
FED-STD-H28/15B, FEDERAL STANDARD: SCREW-THREAD STANDARDS FOR FEDERAL SERVICES - SECTION 15 - ROLLED THREADS FOR SCREW-SHELLS FOR ELECTRIC LAMPHOLDERS AND LAMP BASES (10 MAR 1994).