本航空航天推荐规程（ARP）旨在为机加工扩口和无扩口软管和卡套管端部接头建立推荐的安装扭矩值限制和测试标准。咬合型MS21922无扩口套筒的装配不包括在本ARP中（见MIL-F-18280）。本ARP适用于两种类型的连接和两种基本材料分类。

This Aerospace Recommended Practice (ARP) is intended to establish recommended installation torque value limits and test criteria for machined flared and flareless hose and tube end fitting connections. Assembly of bite-type MS21922 flareless sleeves is not included in this ARP (see MIL-F-18280).This ARP is applicable to two types of connections and two basic material classifications.