Technical Production dataInformation Taper thread 30. List of Thread Standards and Nominal Diameter Ranges of Yamawa Taps ■British※ Thread typeThread symbols Thread typesymbolThread angle Standard Nominaldiameter rangeKinds of threadsTaperNominal diameter range of Yamawa tapsJISReAlaNtSedI StandardDs IN Taper pipe thread R, RcPT 55° JIS B 0203 1/16 〜 6JIS B 0203 Appendix1/8 〜 121/161/16 〜 2 -1/16 〜 4- -- Thread for shutter cable release tip and socket for - 60° JIS B 7104 3.4 28° 3.4 - - camera Thread for seamless steelgas cylinder - (corresponding to R, Rc, Rp of ISO)55°JIS B 8241 AppendixV1,V2,V3 - - - Thread for valve fordissolved acetylene cylinder- 55° JIS B 8244 Appendix 39Thread for valve for liquefiedpetroleum gas cylinder-55°JIS B 8245 AppendixV1,V23/26------ Thread for valve for highpressure gas cylinder- 55° JIS B 8246 Appendix V1,V2,V3 - - - Thread for artificialgraphite electrode - 60° JIS R 7201 45 〜 406 1/3 - - - ※ : WeAmlefetroicuat nthteaspyemr bpoiplseafttherreIaSOd standard was adopted. For general use NPT■German※For railing jointNPTR60°ANSI/ASME 1/16 〜 24O.D.B1.20.11/2 〜 41/16 1/16 〜 3 1/16 〜 2 ---- ATmhereriacdansydmrybsoelsal taper Kinds of threads Related Standards pipe thread For dryseal connection NPTF SAE SHORT PTF-SAESHORT 60° ANSI B1.20.3 1/16 〜 3 1/16 1/16 〜 2 1/16 〜 2 - American taper pipe threadfor aircraft ANPT 60° SAE AS 71051B 1/16 〜 3 1/16 - - - API thread for steel pipefor oil well(USA)LP 60° API Std 5B 1/8 〜 20O.D. 1/16 - - - Thread for mining drill tube(Germany) Gg 60° DIN 20314 31/4 〜 65/8 1/4 - - - Thread for gas containervalve(UK) tire- 55° BS 341:Part1,2 0.6 〜 1.25 0.6 : 1/5.6250.715 〜 1.25 : 1/8-- -- -- ※ : We left out the symbols after ISO standard was adopted. Technical-97