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7M491 — ELBOW,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

7M491: ELBOW,TUBE.

The ELBOW,TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, flow_angle: 45.0 DEGREES, leg_length: 0.750 INCHES NOMINAL SECOND END IN, seat_angle: 37.0 DEGREES FIRST END, thread_class: 2A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST END. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-129-0774, 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
7M491
NSN: 4730-01-129-0774
NIINs: 011290774, 011306650
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
flow_angle45.0 DEGREES
leg_length0.750 INCHES NOMINAL SECOND END IN
seat_angle37.0 DEGREES FIRST END
thread_class2A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleFLARELESS (TUBE) FIRST END
special_features1ST END BULKHEAD THD SIZE 0.562 IN. NOM,CL 3A,UNF A
surface_treatmentANODIZE OVERALL
nominal_thread_size0.438 INCHES SECOND END IN
thread_series_designatorUNF FIRST END
furnished_items_and_quantity1 LOCKNUT AND 1 TUBE COUPLING NUT
NSN4730-01-129-0774
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 7M491 · 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
•
FURNISHED ITEMS AND QUANTITY: 1 LOCKNUT AND 1 TUBE COUPLING NUT
•
FLOW ANGLE: 45.0 DEGREES
•
CONNECTION STYLE: FLARED (TUBE) SECOND END
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 LOCKNUT AND 1 TUBE COUPLING NUT
FLOW ANGLE45.0 DEGREES
CONNECTION STYLEFLARED (TUBE) SECOND END
CONNECTION STYLEFLARELESS (TUBE) FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES SECOND END IN
LEG LENGTH0.750 INCHES NOMINAL SECOND END IN
LEG LENGTH1.730 INCHES NOMINAL FIRST END IN
SUBSTITUTES & CROSS-REFERENCES 4
7M491A4ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
A-400-96-0001Reference document
Same NSN cross-reference
Reference document — Secondary reference
7M491A4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
A400-96-4ANReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7M491?
7M491 is a ELBOW,TUBE.
What parts can replace 7M491?
There are 4 known substitutes for 7M491: 7M491A4A, A-400-96-0001, 7M491A4 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7M491?
7M491 is cataloged in the U.S. Government catalog under NSN 4730-01-129-0774. This indicates validated use in U.S. government and defense supply chains.
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