5 |
螺紋規範 Thread Standard |
55 |
適用螺紋規格55° Partical Profile55° |
60 |
適用螺紋規格60° Partical Profile60° |
ISO |
公制60° Metric60° |
UN |
美規60° UN60° |
G |
開槽 |
R |
圓槽 |
TR(TRAPEZ) |
TR 30° 梯形螺紋 |
ACME |
美規29° 梯形螺紋 (ACME) |
W |
惠氏55° 平行管螺紋Whitworth, (PF, PS) |
BSPT |
英規55° 錐度管螺紋 (PT) |
NPT |
美規60° 錐度管螺紋 (NPT) |