Technical information i 1. THREAD TYPE 600 P M Metric thread ISO DIN-13 600 P Metric fine thread ISO DIN-13 MF (symbol used only in catalogues for distinguish from metric coarse thread) 600 P UNC American unified coarse thread ANSI B-1.1 600 P UNF American unified fine thread ANSI B-1.1 600 P UNEF American unified extra fine thread ANSI B-1.1 600 UNJC P American unified coarse thread for aerospace industry UNJC ASME B1.15 600 UNJF P American unified fine thread for aerospace industry UNJF ASME B1.15 550 P Whitworth pipe thread DIN-ISO 228 G (identical with BSP) 550 Rp P Whitworth internal cylindrical pipe thread PN-ISO 7/1 and DIN EN 10226-1 (identical with BSPP) 550 P Whitworth internal tapered pipe thread Rc PN-ISO 7/1, DIN EN 10226-2 (identical with BSPT) 1:16 600 P NPT American tapered pipe thread with dryseal material ANSI B-1.20.1 1:16 600 NPTF P American tapered pipe thread without dryseal material ANSI B 1.20.4 1:16 600 NPSF P American cylindrical pipe thread ANSI B 1.20.3 550 BSW P Whitworth thread BS-84:1956 (in the past - W) 550 P BSF Whitworth fine thread BS-84:2007 600 EG P M Metric thread for thread inserts V-Coil 600 EG P UNC Metric thread for thread inserts V-Coil 600 EG P Metric thread for thread inserts V-Coil UNF 800 Pg P Steel conduit thread DIN-40430 (P) 300 12 P Tr Trapezoidal symetric thread DIN-103 277