本SAE标准涵盖了适用于四螺栓分离法兰型管、管道和软管连接的法兰封头和分离法兰夹具半部的完整一般和尺寸规范，并适当参考了其组装中使用的O形密封圈和连接部件。（见 图1 和 2 .)还包括推荐的端口尺寸和端口设计注意事项。 指定的带凸缘的头部被结合到具有用于连接管、管道或软管的合适装置的配件中，以提供连接端。这些连接旨在应用于液压系统、工业和商业产品中，其中期望避免使用螺纹连接。 由SAE J518软管接头和SAE J517软管组成的软管组件的额定工作压力不得超过两个额定工作压力值中的较低者。法兰封头应符合 图3 和 表1 分体式法兰夹具半部应符合中的规定 图4 和 表1 .端口尺寸和间距应如 图5 和 表2 . O形密封圈，标称尺寸如 表1 ，与这些连接结合使用。它们应符合SAE J120尺寸和公差表中规定的密封。 用于这些连接的螺栓的尺寸和长度应在 表1 它们应为SAE J429中规定的SAE 5级或更好的材料。SAE 5级或更好材料的内六角螺钉是可接受的。 如果使用锁紧垫圈，应符合SAE J489中规定的轻型弹簧锁紧垫圈，轻型、中型、重型、超重型和高领弹簧锁紧垫圈的尺寸，以及适用于相应螺栓的尺寸。以下通用规范补充了中包含的尺寸数据 表1 关于所有未指定的细节。

This SAE Standard covers complete general and dimensional specifications for the flanged heads and split flange clamp halves applicable to four-bolt split flange type tube, pipe, and hose connections with appropriate references to the O-ring seals and attaching components used in their assembly. (See Figures 1 and 2 .) Also included are recommended port dimensions and port design considerations. The flanged heads specified are incorporated into fittings having suitable means for attachment of tubes, pipes, or hoses to provide connection ends. These connections are intended for application in hydraulic systems, on industrial and commercial products, where it is desired to avoid the use of threaded connections. THE RATED WORKING PRESSURE OF A HOSE ASSEMBLY COMPRISING SAE J518 HOSE CONNECTIONS AND SAE J517 HOSE SHALL NOT EXCEED THE LOWER OF THE TWO WORKING PRESSURE RATED VALUES. Flanged heads shall be as specified in Figure 3 and Table 1 . Split flange clamp halves shall be as specified in Figure 4 and Table 1 . Port dimensions and spacing shall be as specified in Figure 5 and Table 2 . O-ring seals, having nominal dimensions as indicated in Table 1 , are used in conjunction with these connections. They shall conform to the seals specified in SAE J120, Table on Dimensions and Tolerances. Bolts for use with these connections shall be of the sizes and lengths indicated in Table 1 . They shall be of SAE Grade 5 material or better as specified in SAE J429. Socket head cap screws of SAE Grade 5 material or better are acceptable. Lock washers, if used, shall be in accordance with the light spring lock washers specified in SAE J489, Dimensions of Light, Medium, Heavy, Extra Heavy, and Hi Collar Spring Lock Washers, and of sizes applicable to the corresponding bolts. The following general specifications supplement the dimensional data contained in Table 1 with respect to all unspecified detail.