Browse Topic: Hydraulic fittings

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Aerospace - Lightning Effects on Hydraulic Transport Elements on AircraftAIR6185A (Current)11/26/2025
<p>This SAE Aerospace Information Report (AIR) describes hydraulic system design and installation to minimize the effects of lightning, especially when the aircraft structure is composite. Techniques for effective electrical bonding, hydraulic system lightning protection, and lightning protection verification techniques are discussed.</p>
My new committee for commercial aircrafts
Impulse Testing of Hydraulic Tubing and Fittings, S-N CurveAS4265A (Current)9/29/2025
This aerospace test standard establishes the requirements and procedures for evaluating and comparing the impulse fatigue performance of high pressure hydraulic fittings and tubing. this test method may be used to test similar fluid system components, if desired.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Hydraulic Hose FittingsJ516_202111 (Current)11/9/2021
This SAE Standard provides general and dimensional specifications for the most common hose fittings used in conjunction with hydraulic hoses specified in SAE J517 and utilized in hydraulic systems on mobile and stationary equipment. The general specifications contained in Sections 1 through 17 are applicable to all hydraulic hose fittings and supplement the detailed specifications for the 100R-series fittings contained in the later sections of this document. This document shall be utilized as a procurement document only to the extent agreed upon by the manufacturer and user. Refer to SAE J517 for specifications of hose and information on hose assemblies. SAE J1273 contains information on application factors affecting hose fittings, hose, and hose assemblies. The rated working pressure of a hose assembly comprising SAE J516 fittings and SAE J517 hoses shall not exceed the lower of the two working pressure rated values. The following are hose fitting types contained in this document
Hydraulic Hose and Hose Fittings Committee
Hydraulic Hose FittingsJ516_202111-TEST-REC (Historical)11/9/2021
This SAE Standard provides general and dimensional specifications for the most common hose fittings used in conjunction with hydraulic hoses specified in SAE J517 and utilized in hydraulic systems on mobile and stationary equipment. The general specifications contained in Sections 1 through 17 are applicable to all hydraulic hose fittings and supplement the detailed specifications for the 100R-series fittings contained in the later sections of this document. This document shall be utilized as a procurement document only to the extent agreed upon by the manufacturer and user. Refer to SAE J517 for specifications of hose and information on hose assemblies. SAE J1273 contains information on application factors affecting hose fittings, hose, and hose assemblies. The rated working pressure of a hose assembly comprising SAE J516 fittings and SAE J517 hoses shall not exceed the lower of the two working pressure rated values. The following are hose fitting types contained in this document
Hydraulic Hose and Hose Fittings Committee
Recommended Practices for Hydraulic Hose AssembliesJ1273_202110 (Current)10/28/2021
SAE J1273 provides guidelines for selection, routing, fabrication, installation, replacement, maintenance, and storage of hose and hose assemblies for hydraulic fluid-power systems. Many of these SAE Recommended Practices also may be suitable for other hoses and systems.
Hydraulic Hose and Hose Fittings Committee
Lubrication FittingsJ534_202110 (Current)10/6/2021
This SAE Standard covers complete general and dimensional specifications for the various types of lubrication fittings and related threaded components intended for general application in the automotive and allied fields.
Hydraulic Tube Fittings Committee
Lubrication FittingsJ534_202110-TEST-REC (Historical)10/6/2021
This SAE Standard covers complete general and dimensional specifications for the various types of lubrication fittings and related threaded components intended for general application in the automotive and allied fields.
Hydraulic Tube Fittings Committee
Aircraft Maintenance Jacks - General RequirementsAS4775B (Current)9/30/2021
This document covers the general requirements for hydraulic aircraft jacks. It can be applied to tripod, unipod, and axle jacks that may be used on open ramp areas as well as in the aircraft hangar. Throughout this Aerospace Standard, the minimum essential criteria are identified by the key word “shall”. Recommended criteria are identified by use of the key word “should”. Deviation from recommended criteria should only occur after careful consideration and thorough service evaluation have shown alternate methods to provide an equivalent level of safety. The term “vertical load” throughout this Aerospace Standard is defined as the force imposed on the aircraft jack at the airframe jack point.
AGE-3 Aircraft Ground Support Equipment Committee
Fittings, 24 Degree Cone Flareless, Fluid Connection, 3000 psiAS18280H (Current)5/26/2021
This SAE Aerospace Standard (AS) establishes the requirements for 24 degree cone flareless fluid connection fittings and nuts, internally or externally swaged, preset, or welded sleeves for use in aircraft fluid systems at nominal operating pressures up to and including 3000 psi.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Fittings, 24 Degree Cone Flareless, Fluid Connection, 3000 psiAS18280H-TEST-REC (Historical)5/26/2021
This SAE Aerospace Standard (AS) establishes the requirements for 24 degree cone flareless fluid connection fittings and nuts, internally or externally swaged, preset, or welded sleeves for use in aircraft fluid systems at nominal operating pressures up to and including 3000 psi.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING, ELBOW 90°, BULKHEAD, EXTERNAL SWAGE TO FLARELESS, HYDRAULICAS6484 (Current)5/11/2021
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Beaded Ends for Hose Connections and Hose FittingsJ1231_202104 (Current)4/22/2021
This SAE Standard provides general and dimensional specifications for beaded ends and hose fittings. These connections are intended for general applications in low pressure automotive and hydraulic systems on automotive, industrial, and commercial products. The fittings shown are designed to be used with hoses that are intended to be retained by hose clamps. It is recommended that where step sizes or additional types of fittings are required, they be designed to conform with the specifications of this document insofar as they may apply. The following general specifications shall supplement the dimensional data contained in the tables with respect to all unspecified detail.
Hydraulic Hose and Hose Fittings Committee
Beaded Ends for Hose Connections and Hose FittingsJ1231_202104-TEST-REC (Historical)4/22/2021
This SAE Standard provides general and dimensional specifications for beaded ends and hose fittings. These connections are intended for general applications in low pressure automotive and hydraulic systems on automotive, industrial, and commercial products. The fittings shown are designed to be used with hoses that are intended to be retained by hose clamps. It is recommended that where step sizes or additional types of fittings are required, they be designed to conform with the specifications of this document insofar as they may apply. The following general specifications shall supplement the dimensional data contained in the tables with respect to all unspecified detail.
Hydraulic Hose and Hose Fittings Committee
Retainers (Backup Rings), Hydraulic and Pneumatic, Polytetrafluoroethylene Resin, Single Turn, Scarf-Cut, For Use in AS5857 Static GlandsAS5860C (Current)11/9/2020
This SAE Aerospace Standard (AS) specifies scarf-cut polytetrafluoroethylene (PTFE) retainers (backup rings) for use in static glands in accordance with AS5857. They are usually for use in hydraulic and pneumatic systems as anti-extrusion devices in conjunction with O-rings and other seals.
A-6C2 Seals Committee
Retainers (Backup Rings), Hydraulic and Pneumatic, Polytetrafluoroethylene Resin, Single Turn, Scarf-Cut, For Use in AS5857 Static GlandsAS5860C-TEST-REC (Historical)11/9/2020
This SAE Aerospace Standard (AS) specifies scarf-cut polytetrafluoroethylene (PTFE) retainers (backup rings) for use in static glands in accordance with AS5857. They are usually for use in hydraulic and pneumatic systems as anti-extrusion devices in conjunction with O-rings and other seals.
A-6C2 Seals Committee
Recommended Practices for Hydraulic Hose AssembliesJ1273_202009 (Historical)9/1/2020
SAE J1273 provides guidelines for selection, routing, fabrication, installation, replacement, maintenance, and storage of hose and hose assemblies for hydraulic fluid-power systems. Many of these SAE Recommended Practices also may be suitable for other hoses and systems.
Hydraulic Hose and Hose Fittings Committee
Coding Systems for Identification of Fluid Conductors and ConnectorsJ846_202009 (Historical)9/1/2020
This coding system is intended to provide a convenient means of identifying the various tube, pipe, hydraulic hose type and hose fittings, not intended for use in aircraft and of transmitting technical or engineering information relating to them wherever drawings or other pictorial media may not be readily available. The code has been kept flexible to permit expansion to cover new fitting categories or styles and, if the need develops, the inclusion of additional materials. The system is also compatible with automatic data processing equipment. It is not intended that this code should supersede established systems or means of identification. Therefore, it should be the prerogative of the user to apply the code which best satisfies his requirements.
Fluid Conductors and Connectors Tech Steering Committee
Coding Systems for Identification of Fluid Conductors and ConnectorsJ846_202009-TEST-REC (Historical)9/1/2020
This coding system is intended to provide a convenient means of identifying the various tube, pipe, hydraulic hose type and hose fittings, not intended for use in aircraft and of transmitting technical or engineering information relating to them wherever drawings or other pictorial media may not be readily available. The code has been kept flexible to permit expansion to cover new fitting categories or styles and, if the need develops, the inclusion of additional materials. The system is also compatible with automatic data processing equipment. It is not intended that this code should supersede established systems or means of identification. Therefore, it should be the prerogative of the user to apply the code which best satisfies his requirements.
Fluid Conductors and Connectors Tech Steering Committee
FITTING ASSEMBLY, ELBOW, 45°, AXIALLY SWAGED, HYDRAULIC, 5080 PSIAS5971D-TEST-REC (Historical)6/10/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING ASSEMBLY, ELBOW, 45°, AXIALLY SWAGED, HYDRAULIC, 5080 PSIAS5971D (Current)6/10/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING ASSEMBLY, CROSS, AXIALLY SWAGED, HYDRAULIC, 5080 PSIAS5973B (Current)6/2/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING ASSEMBLY, CROSS, AXIALLY SWAGED, HYDRAULIC, 5080 PSIAS5973B-TEST-REC (Historical)6/2/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING ASSEMBLY, ELBOW, 90°, AXIALLY SWAGED, HYDRAULIC, 5080 PSIAS5970D (Current)5/7/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING ASSEMBLY, TEE AXIALLY SWAGED, HYDRAULIC, 5080 PSIAS5972H (Current)5/7/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING ASSEMBLY, TEE AXIALLY SWAGED, HYDRAULIC, 5080 PSIAS5972H-TEST-REC (Historical)5/7/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING ASSEMBLY, 90°, FEMALE FLARELESS, AXIALLY SWAGED, HYDRAULIC, 3000 PSIAS5801B (Current)5/6/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING ASSEMBLY, TEE, FEMALE FLARELESS AND AXIALLY SWAGED ON THE RUN, AXIALLY SWAGED ON THE BRANCH, HYDRAULIC, 3000 PSIAS5804C (Current)5/6/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Flexure Fatigue Strength of Tube Fitting JointsAIR1418B (Current)5/6/2020
This SAE Aerospace Information Report (AIR) presents flexure fatigue strength of tube fitting joints in the form of graphs showing applied deflection D and total calculated axial stress S versus number of cycles to failure N. The graphs have been prepared from data obtained by actual testing conducted in accordance with ARP1185.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING ASSEMBLY, ELBOW, 90°, MALE FLARELESS, AXIALLY SWAGED, HYDRAULIC, 3000 PSIAS5802B (Current)5/6/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Procedure for Determining the Dimensional Relationship of Rotating Components Coupled with Thrust WiresAIR5615A (Current)5/6/2020
The scope of this SAE Aerospace Information Report (AIR) is to define recommended methods of determining the optimal dimensional relationship of components coupled together using thrust wires for applications such as coupling nuts and fittings. These design parameters are intended to optimize component loading characteristics and maximize wire shear capabilities for both high and low pressure applications.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING ASSEMBLY, ELBOW, 45°, FEMALE FLARELESS, AXIALLY SWAGED, HYDRAULIC, 3000 PSIAS5803B (Current)5/6/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING ASSEMBLY, TEE, FEMALE FLARELESS AND AXIALLY SWAGED ON THE RUN, AXIALLY SWAGED ON THE BRANCH, HYDRAULIC, 3000 PSIAS5804C-TEST-REC (Historical)5/6/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING ASSEMBLY, STRAIGHT, MALE FLARELESS, AXIALLY SWAGED, HYDRAULIC, 3000 PSIAS5793B (Current)4/29/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING ASSEMBLY, TEE, FEMALE FLARELESS ON RUN, AXIALLY SWAGED, HYDRAULIC, 5080 PSIAS5767B (Current)4/29/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING ASSEMBLY, STRAIGHT, BULKHEAD FLARELESS, AXIALLY SWAGED, HYDRAULIC, 3000 PSIAS5791B (Current)4/28/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
FITTING ASSEMBLY, STRAIGHT, FEMALE FLARELESS, AXIALLY SWAGED, HYDRAULIC, 3000 PSIAS5792D (Current)4/28/2020
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
A Guide for the Selection of Quick-Disconnect Couplings for Aerospace Fluid SystemsAIR1047E (Current)3/10/2020
The factors involved in the selection of a quick-disconnect are grouped into the following classifications for the purpose of discussion: a Functional considerations. b Weight considerations. c Environmental performance factors. d End fitting types. e Additional considerations. A quick-disconnect coupling as used in this AIR is one that can be rapidly and repetitively connected and disconnected without excessive fluid loss. The relative importance of the design factors depends upon the fluid medium of the particular system in which quick-disconnect is to be used. The effect of the fluid media on each factor is discussed in this report where applicable.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Automotive Straight Thread Filter and Drain PlugsJ532_202001 (Current)1/15/2020
This SAE Standard includes complete general and dimensional specifications for those types of filler and drain plugs (shown in Figures 1 to 7 and Tables 1 to 3) having straight threads which are commonly used with gaskets or seals in automotive and related industrial applications.
Hydraulic Tube Fittings Committee
Hydraulic Directional Control Valves, 3000 psi MaximumJ748_201912 (Current)12/4/2019
This SAE Recommended Practice has been set up by Subcommittee 4 of the Off-Road Machinery Technical Committee and is primarily for directional control valves on construction and industrial machinery equipment as referenced in SAE J1116. The purpose is to establish port area to flow relationship and match valve spool eye ends in relation to rated capacity. Port connections are optional for either the 4-bolt split flange connection or the internal straight thread "O" ring connection.
CTTC C1, Hydraulic Systems
Recommended Practices for Hydraulic Hose AssembliesJ1273_201910 (Historical)10/31/2019
SAE J1273 provides guidelines for selection, routing, fabrication, installation, replacement, maintenance, and storage of hose and hose assemblies for hydraulic fluid-power systems. Many of these SAE Recommended Practices also may be suitable for other hoses and systems.
Hydraulic Hose and Hose Fittings Committee
FITTING ASSEMBLY, UNION, AXIALLY SWAGED, HYDRAULIC 5080 PSIAS5969F (Historical)10/31/2019
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Installation Procedures and Torques for Fluid ConnectionsAS683E (Current)10/28/2019
These procedures cover the following: Section 3 - Cone end connections for flared tube and brazed ferrule, with and without gasket. Section 4 - Boss end connections, positioned type, with back-up ring. Section 5 - Boss end connections, positioned type, without back-up ring. Section 6 - Boss end connections, non-positioned type. Section 7 - Bulkhead connections.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Seamless, 304/304L Stainless Steel TubingJ3129_201910 (Current)10/14/2019
This SAE Standard covers seamless stainless steel pressure tubing intended for use as hydraulic lines and in other applications requiring corrosion resistance.
Metallic Tubing Committee
Welded and Cold Drawn, 304/304L Stainless Steel TubingJ3128_201910 (Current)10/14/2019
This SAE Standard covers welded and drawn to size stainless steel pressure tubing intended for use as hydraulic lines and in other applications requiring corrosion resistance.
Metallic Tubing Committee
Welded, 304/304L Stainless Steel TubingJ3127_201910 (Current)10/14/2019
This SAE Standard covers welded stainless steel pressure tubing intended for use as hydraulic lines and in other applications requiring corrosion resistance.
Metallic Tubing Committee
Specification for O-Ring Face Seal Connectors: Part 1 - Tube Connection Details and Common Requirements for Performance and TestsJ1453/1_201906 (Current)6/6/2019
The three parts of SAE J1453 cover material, dimensional, and performance requirements of steel O-ring face seal (ORFS) connectors for tubing and the O-ring face seal interface and nut portion of hose stem assemblies for nominal tube diameters of 6 through 50 mm.
Hydraulic Tube Fittings Committee
FITTING, LUBRICATION, HYDRAULIC, SURFACE CHECK, STRAIGHT THREADS, STEEL, TYPE IIAS15002D (Current)5/20/2019
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Flexure Testing of Hydraulic Tubing Joints and FittingsARP1185C (Current)4/23/2019
This SAE Aerospace Recommended Practice (ARP) establishes flexure test procedures to determine and classify the fatigue strengths of reconnectable or permanent hydraulic tube joints. The procedure is intended for conducting flexure tests of fittings and joints for hydraulic tubing materials such as AMS 5561 (21Cr-6Ni-9Mn) steel or AMS 4944 (3AL-2.5V) titanium. A mean stress is applied by holding system pressure in the specimens and flexing in a rotary or planar bending test machine.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Hole Contour, Fluid Passage, Tube FittingARP4266A (Current)3/26/2019
This document is intended to provide recommended contours and limits of size of the surfaces of the internal fluid passages of tube fittings for the portions that are not already defined by the fitting end design standard drawings.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Fittings, Weld, Fluid Connection, 5000 psi MaximumAS4510A (Current)3/26/2019
This SAE Aerospace Standard (AS) establishes the requirements for weld fluid connection fittings and rings to be orbital arc welded to tubing for use in aircraft fluid systems up to a maximum operating pressure of 5000 psi.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
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