UNF thread Unified Fine thread 统一标准细牙螺纹

unified thread 统一英制螺纹 ; [机] 统一标准螺纹 ; 统一螺纹

unified screw thread 统一标准螺纹 ; 统一螺纹

UNIFIED Thread Series 系列钢丝螺套 ; 系列螺纹丝套 ; 系列罗纹丝套

unified coarse thread [机] 统一标准粗牙螺纹 ; 统一粗牙螺纹 ; 美英统一制组螺纹

unified screw thread gauge 统一标准螺纹规

unified fine thread 统一标准细牙螺纹

unified miniature screw thread 统一标准小直径螺纹

unified miniature screw thread gauge 统一标准小直径螺纹规

unified screw-thread class 统一螺纹配合等级