公制粗牙/細牙螺紋 Metric Coarse Screw Threads

英制粗牙螺紋 Whitworth Coarse Screw Thread

FT無屑(擠壓)絲攻 Metric Screw Threads

SM 縫紉機螺紋 Screw threads for sewing machines

UNC美制粗牙螺紋 Unified Coarse Screw Threads

UNF美制細牙螺紋 Unified Fine Screw Threads

UNEF美制特細螺紋 Unified extra fine thread & constant-pitch series with 8 & with 12 threads

NPT美制標準管用螺紋 NPT NPS (NPSC) American Standard Pipe Threads

NPTF•NPSF美制標準管用耐密螺紋 NPTF•NPSF Dryseal American Standard Pipe Threads

NPSM美制標準機械接合管用平行螺紋 NPSM American Standard Straight Pipe Thread

RC,PT英式管用推拔螺紋( (RC,PT) Taper pipe thread