PartsTable
Technical Data Sheet
AN791-2 ✓ Verified by PartsTable
· HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The ELBOW,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 377 OR COPPER ALLOY 360 OVERALL, flow_angle: 45.0 DEGREES, leg_length: 0.500 INCHES NOMINAL SECOND END IN, seat_angle: 50.0 DEGREES FIRST END, thread_class: 3A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-231-5618, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
AN791-2
NSN: 4730-00-231-5618
FSC: 4730
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialCOPPER ALLOY 377 OR COPPER ALLOY 360 OVERALL
flow_angle45.0 DEGREES
leg_length0.500 INCHES NOMINAL SECOND END IN
seat_angle50.0 DEGREES FIRST END
thread_class3A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleINVERTED FLARE (TUBE) FIRST END
nominal_thread_size0.125 INCHES SECOND END IN
thread_quantity_per_inch32 FIRST END
thread_series_designatorUN FIRST END
nominal_pipe_size_accommodated0.125 INCHES SECOND END IN
material_document_and_classificationQQ-B-626 FED SPEC ALL MATERIAL RESPONSES OVERALL
NSN4730-00-231-5618
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AN791-2 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.125 INCHES FIRST END IN
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-626 FED SPEC ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD SIZE: 0.125 INCHES SECOND END IN
FLOW ANGLE: 45.0 DEGREES
THREAD SERIES DESIGNATOR: UN FIRST END
CONNECTION STYLE: INVERTED FLARE (TUBE) FIRST END
THREAD CLASS: 3A FIRST END A
THREAD QUANTITY PER INCH: 32 FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.125 INCHES FIRST END IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626 FED SPEC ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD SIZE0.125 INCHES SECOND END IN
FLOW ANGLE45.0 DEGREES
THREAD SERIES DESIGNATORUN FIRST END
CONNECTION STYLEINVERTED FLARE (TUBE) FIRST END
THREAD CLASS3A FIRST END A
THREAD QUANTITY PER INCH32 FIRST END
NOMINAL PIPE SIZE ACCOMMODATED0.125 INCHES SECOND END IN
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
112320Interchangeable
interchangeable cross-reference
interchangeable
188D03X02Interchangeable
interchangeable cross-reference
interchangeable
6200X3Interchangeable
interchangeable cross-reference
interchangeable
8912Interchangeable
interchangeable cross-reference
interchangeable
S4720Interchangeable
interchangeable cross-reference
interchangeable
7912Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN791-2?
AN791-2 is a ELBOW,PIPE TO TUBE.
What parts can replace AN791-2?
There are 17 known substitutes for AN791-2: 112320, 188D03X02, 6200X3 and 14 more. Substitute compatibility should be verified for your specific system.
Is AN791-2 still available?
AN791-2 is currently cancelled.
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