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6531-70-320-4101 — ELBOW,FLANGE TO TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

6531-70-320-4101: ELBOW,FLANGE TO TUBE.

The ELBOW,FLANGE TO TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, flow_angle: 90.0 DEGREES, nominal_width: 3.000 INCHES SECOND END IN, nominal_length: 3.000 INCHES SECOND END IN, connection_type: FLANGE SECOND END, connection_style: FLARED W/ GASKET SEAL (BOSS) FIRST END. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-304-7557, 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
6531-70-320-4101
NSN: 4730-01-304-7557
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
flow_angle90.0 DEGREES
nominal_width3.000 INCHES SECOND END IN
nominal_length3.000 INCHES SECOND END IN
connection_typeFLANGE SECOND END
connection_styleFLARED W/ GASKET SEAL (BOSS) FIRST END
bolt_hole_quantity4 SECOND END
nominal_thread_size1.875 INCHES FIRST END IN
thread_quantity_per_inch12 FIRST END
thread_series_designatorUNIFIED NATIONAL JOINT (UNJ) FIRST END
bolt_hole_nominal_diameter0.338 INCHES SECOND END IN
nominal_outside_diameter_tube_accommodated1.500 INCHES FIRST END IN
NSN4730-01-304-7557
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6531-70-320-4101 · 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
•
FLOW ANGLE: 90.0 DEGREES
•
CONNECTION STYLE: FLARED W/ GASKET SEAL (BOSS) FIRST END
•
NOMINAL LENGTH: 3.000 INCHES SECOND END IN
•
CONNECTION TYPE: FLANGE SECOND END
•
BOLT HOLE NOMINAL DIAMETER: 0.338 INCHES SECOND END IN
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.500 INCHES FIRST END IN
•
NOMINAL THREAD SIZE: 1.875 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS
FLOW ANGLE90.0 DEGREES
CONNECTION STYLEFLARED W/ GASKET SEAL (BOSS) FIRST END
NOMINAL LENGTH3.000 INCHES SECOND END IN
CONNECTION TYPEFLANGE SECOND END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
BOLT HOLE NOMINAL DIAMETER0.338 INCHES SECOND END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.500 INCHES FIRST END IN
NOMINAL THREAD SIZE1.875 INCHES FIRST END IN
CENTER TO CENTER NOMINAL DISTANCE BETWEEN BOLT HOLES ALONG WIDTH2.375 INCHES SECOND END IN
BOLT HOLE QUANTITY4 SECOND END
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 1
65317-03204Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6531-70-320-4101?
6531-70-320-4101 is a ELBOW,FLANGE TO TUBE.
What parts can replace 6531-70-320-4101?
There is 1 known substitute for 6531-70-320-4101: 65317-03204. Substitute compatibility should be verified for your specific system.
What is the NSN for 6531-70-320-4101?
6531-70-320-4101 is cataloged in the U.S. Government catalog under NSN 4730-01-304-7557. This indicates validated use in U.S. government and defense supply chains.
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