Steam, watergas and pipesPipe couplings for food and fire fightingindustriesMotion transmissionAircraft and aerospaceOil and gas
BSPT Taper Pipe ThreadNPTF AmericanDIN 405 RoundISO Trapezoidal 30°American ACMEUNJAPI Buttress CasingAPI Round Casing & Tubing
r=0.137278P 27.5° 27.5° 90° 1.78° r=0.137278P30° 30° 90° 1.78°r=0.221047P 30° r=0.238507P r=0.255967P30° 0.366P29° 0.3707P60° 0.125P r=0.18042P1.78° 3° 10° 90°30° 30° 90° 1.78°
BSPT R(PT) Rc(PS) RpNPTFRdTr (TM)ACME (Tw)UNJBCSGCSG LCSG
thread/inchthread/inchthread/inchmmthread/inchthread/inchthread/inchthread/inch
19 14 1114 11.5 810 8 6 41.5 2.0 3.0 4.0 5.012 10 8 6 5510 8
– –– –– –– –– –– –– –– –
  • G026
  • G031
  • G032

MICRO-MINI TWIN

  • G034
1.75 5.016 716 6
2.014 614 5
13 512
0.5 –1.5(48–16)48–160.5 –1.548–16
1.75–3.0(14– 8)14– 81.75–3.014– 8
3.5 –5.0(07– 5)7– 53.5 –5.07– 5
1.5–2.0(16–13)1.5–2.016–13
1.5–2.5(16–11)1.5–2.516–11
0.5 –1.0 (36–24)0.5 -1.036–24
0.75–1.25(28–20)0.75-1.2528–20
0.75–1.75(24–16)0.75-1.7524–16

* When machining an internal UNJ thread, cut an internal hole with the appropriate diameter. Then machine with 60° American UN. In this case, a full form type insert cannot be used.