FED-STD-H28/4 (NOTICE-2), FEDERAL STANDARD: SCREW THREAD STANDARDS FOR FEDERAL SERVICES, SECTION 4, CONTROLLED RADIUS ROOT SCREW THREADS, UNJ SYMBOL (

FED-STD-H28/4 (NOTICE-2), FEDERAL STANDARD: SCREW THREAD STANDARDS FOR FEDERAL SERVICES, SECTION 4, CONTROLLED RADIUS ROOT SCREW THREADS, UNJ SYMBOL (10 AUG 1993)., FED-STD-H28/4 , dated 31 March 1978, has been reviewed and determined to be current.