婁底雙頭外絲直接 VN
婁底單頭外絲直接 VWN
婁底雙頭螺紋長接 VLN
婁底單頭螺紋長接 VWLN
婁底直通式內絲 VSO
婁底短形直通式內絲 VHSO
婁底厚壁直通式內絲 WPS
婁底雙頭內絲 WPTS
婁底單頭內絲 WHPTS
婁底六角螺紋短接 WM6N
婁底六角異徑接頭 WMRN
婁底有邊內絲接頭 WMS
