30. List of Thread Standards and Nominal Diameter Ranges of Yamawa Taps ■American Production data Thread type Nominal Internal thread Nominal diameter range of Yamawa taps Thread type Thread angle Standard symbol diameter range class JIS ANSI DIN Thread symbols Kinds of threads Related Standards UNJC 0.0730 〜 4.0000 UNJF 0.0600 〜 1.5000 UNJEF 0.2160 〜 1.6875 SAE AS 8879D 3B - - - 8UNJ 0.2160 〜 1.6875 12UNJ 0.6250 〜 6.0000 Unified inch thread(USA) 16UNJ 0.4375 〜 6.0000 60° (UNJ thread) UNJC 0.0730 〜 4.0000 UNJF 0.0600 〜 1.5000 UNJEF 0.2160 〜 1.6875 ASME B1.15 3B,2B - - - 8UNJ 1.0625 〜 4.0000 12UNJ 0.6250 〜 6.0000 16UNJ 0.4375 〜 6.0000 Unified miniature thread UNM 60° ASA B1.10 0.3 〜 1.4 - - - - (USA) American parallel pipe thread Straight pipe thread for coupling NPSC 1/8 〜 4 - ANSI/ASME 1/8 〜 2 1/8 〜 1 - For fitting(mechanical joint) NPSM 1/8 〜 6 2B B1.20.1 For use with locknut(mechanical joint) NPSL 60° 1/8 〜 12 - - - - For hose coupling ANSI/ASME 1/2 〜 4 - - - - Parallel thread NPSH (mechanical joint) B1.20.7 American Dryseal parallel pipe thread Fuel internal parallel pipe thread NPSF - 1/16 〜 2 1/8 〜 1 - 60° ANSI B1.20.3 1/16 〜 1 Intermediate internal parallel pipe thread NPSI - - - - Acme thread(USA) ACME 29° ASME B1.5 1/4 〜 5 4G,3G,2G,4C,3C,2C - - - Stub acme thread(USA) STUB ACME 29° ASME B1.8 1/4 〜 5 - - - - Steel conduit thread Pg 80° DIN 40430 7 〜 48 - - - 7 〜 36 (Germany) Internal thread for insert EG M 60° DIN 8141-2 2 〜 56 6H mod, 6G mod - - - coil(Germany) Trapezoidal thread for plastic KT 20° DIN 6063-2 10 〜 50 - - - - container(Germany) Buttress thread for plastic or glass container with screw S 10+30° DIN 55525 10 〜 50 - - - - cap(Germany) Round thread for general Rd 30° DIN 405-1,-2 8 〜 200 - - - - use(Germany) Round thread for glass GL 30° DIN 168-1 8 〜 45 - - - - container(Germany) Bicycle thread(Germany) FG 60° DIN 79012 2 〜 34.8 - - - - Tire valve thread(Germany) Vg 60° DIN 7756 5 〜 12 - - - - MEDIUM CLASS, Whitworth thread(UK) BSW 55° BS 84 1/8 〜 6 - - 3/32 〜 13/4 NORMAL CLASS BA thread(UK) BA 471/2° BS 93 0 〜 25 - - - - MJ thread MJ 60° ISO 5855-1 〜 3 1.6 〜 300 4H6H,4H5H - - - (for aerospace use) (ISO) MJS Information Technical Technical-96