本SAE标准涵盖了适用于4螺栓对开法兰式管、管和软管连接的法兰头和对半对开法兰卡箍的完整通用和尺寸规范，并适当参考了O形密封圈和组装中使用的连接部件。还包括建议的端口尺寸和端口设计注意事项。规定的法兰头被纳入配件中，配件具有合适的方式连接到管、管或软管，以提供连接端。 这些连接适用于液压系统、工业和商业产品，避免使用螺纹连接。

This SAE standard covers complete general and dimensional specifications for the flanged heads and split flange clamp halves applicable to 4-bolt split flange type tube, pipe, and hose connections with appropriate references to the O-ring seals and attaching components used in their assembly. Also included are recommended port dimensions and port design considerations. The flanged heads specified are incorporated into fittings having suitable means for attachment to 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.