Fittings covered by this document when assembled per 6.2.1 are intended for use in oxygen systems and for ground service equipment and with all types of fluids, such as hydraulic fluids, oil, fuels, air, and water. Recommended operating pressures for ANPT fittings, based on tube sizes for fittings with at least one flared or flareless port, are shown in Table 5A and 5B. Use Table 5A and 5B as a guideline for fittings having only ANPT ports.

Historically, the pressures previously specified in the above paragraph (prior to revision B) were intended only for ANPT type fittings and followed the guidelines as specified in legacy strandard MIL-F-5509. Procurement specification AS4842/1 defines requirements for fittings having at least one flared port and at least one ANPT port. Procurement specification AS4842/2 defines requirements for fittings having at least one flareless port and at least one ANPT port. Tables 5A and 5B are being intorduced to show recommended operating pressures based on fittings/tubing material combinations.

User shall verify pressures based on tubing wall thickness considered. When used on pressure lines higher than shown in Table 5A or 5B, the user shall perform tests defined herein.

Assembly

A suitable thread sealant or polytetrafluoroethylene tape is be applied to the external threads. The external threads are to be assembled into the internal threads at least two turns by hand and then torque applied to the applicable values of Table 6.

Superseding Information

This document is intended to be an improved suitable designation as a procurement specification for pipe threaded fittings that mate to threaded pipe or to other pipe threaded fittings. This document is intended to be a replacement as a primary procurement specification for the following known active fitting that has MIL-F-5509 designated as a procurement specification. See Table 7 for those standards that have been cancelled and superseded by current SAE standards.