30. List of Thread Standards and Nominal Diameter Ranges of Yamawa Taps 30. List of Thread Standards and Nominal Diameter Ranges of Yamawa Taps Cross chart of thread cutting tool standard Hardness conversion table

Thread typeThread typeThread angleStandardNominalTaperNominal diameter range of Yamawa taps
symboldiameter rangeJISANSIDIN
TrithrdR,Rc55°JIS B 02031/16〜61/161/16〜2
apeppe eaPTJIS B 0203 Appendix1/8 〜121/16 〜4
Thread for shutter cable release tip and socket for camera60°JIS B 71043.428°3.4
Thread for seamless steel gas cylinder55°JIS B 8241 AppendixV1,V2,V3
Thread for valve for dissolved acetylene cylinder i55°JIS B 8244 Appendix393/26
Thread for valve for liquefied petroleumgas cylinder55°JIS B 8245 AppendixV1,V2
Thread for valve for high pressuregas cylinder i55°JIS B 8246 AppendixV1,V2,V3
ad Thread for artificial graphite electrode60°JIS R 720145〜4061/3
hre American taper pipe thread
per t For general useNPT60°ANSI/ASME1/16〜24O.D.1/161/16〜31/16〜2
Ta For railing jointNPTRB1.20.11/2〜4
American dryseal taper pipe thread
For dryseal connection SAE SHORTNPTF PTF-SAE SHORT60°ANSI B1.20.31/16〜31/161/16〜21/16〜2
American taper pipe thread for aircraftANPT60°SAE AS 71051B1/16〜31/16
API thread for steel pipe for oil well(USA)LP60°API Std 5B1/8 〜20O.D.1/16
Thread for mining drill tube (Germany)Gg60°DIN 2031431/4〜65/81/4
Thread for gas container valve(UK)55°BS 341:Part1,20.6 〜1.250.6 :1/5.625 0.715〜1.25 :1/8- -- -- -

C Scale C Scale

Thread limit (Metric) Hardness Hardness Strength

Standard ball TungstenA scaleB scaleD scale15-N scale30-N scale45-N scaleMPa※1
HRCHVHBSHBWHRAHRBHRDHR15NHR30NHR45NHSHRC

Hand taps (Metric fine)

Hand taps (American parallel pipe thread)

Hand taps (American dryseal taper pipe thread)

Nut taps (Unified fine) Machine taps (Metric coarse) Machine taps (Metric fine) Bent shank taps (Metric fine)

Spiral fluted taps Shell taps (Metric thread) Pulley taps Thread Forming taps

  • : We left out the symbols after ISO standard was adopted. Blanks for carbide taps

Thread cutting round dies (Metric coarse, Adjustable) Thread cutting round dies (Metric fine, Adjustable) Thread cutting round dies (Metric, Solid) Thread cutting round dies (Unified coarse adjustable) Thread cutting round dies (Unified fine adjustable) Thread cutting round dies (Unified thread) Thread cutting round dies (Parallel pipe thread) Thread cutting round dies (Taper pipe thread) Hexagon dies

Symbols : Organization names

ISO : International Organization for Standardization ANSI : American National Standards Institute

JIS : Japanese Industrial Standards Committee BS : British Standards Institution, UK

TAS : Japan Cutting & Wear-resistant Tool Association DIN : Deutsches Institiut fur Normung

Technical Inf ※1 : 1Mpa=1N/mm2 ※2 : In above table, numbers in parenthesis are only for reference. This table is abstracted from SAE J 417.