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640-1456 — ELBOW,FLANGE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

640-1456: ELBOW,FLANGE TO BOSS.

The ELBOW,FLANGE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, leg_length: 2.120 INCHES NOMINAL FIRST END IN, flange_shape: RECTANGULAR WITH HOLES FIRST END, nominal_width: 2.380 INCHES FIRST END IN, nominal_length: 2.880 INCHES FIRST END IN, connection_type: FLANGE FIRST END. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-261-6589, 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
640-1456
NSN: 4730-01-261-6589
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 13499 — ROCKWELL COLLINS, INC. DBA COLLINS AEROSPACE GOVERNMENT SYSTEMS DIV COLLINS AEROSPACE - GOVERNMENT SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
leg_length2.120 INCHES NOMINAL FIRST END IN
flange_shapeRECTANGULAR WITH HOLES FIRST END
nominal_width2.380 INCHES FIRST END IN
nominal_length2.880 INCHES FIRST END IN
connection_typeFLANGE FIRST END
connection_styleGASKET SEAL (BOSS) SECOND END
flange_face_designRECESSED WITH GASKET GROOVE FIRST END
nominal_thread_size1.312 INCHES SECOND END IN
recess_nominal_depth0.121 INCHES FIRST END IN
recess_nominal_diameter0.875 INCHES FIRST END IN
thread_quantity_per_inch12 SECOND END
NSN4730-01-261-6589
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 640-1456 · 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
•
RECESS NOMINAL DEPTH: 0.121 INCHES FIRST END IN
•
FLANGE SHAPE: RECTANGULAR WITH HOLES FIRST END
•
FLANGE FACE DESIGN: RECESSED WITH GASKET GROOVE FIRST END
•
CONNECTION STYLE: GASKET SEAL (BOSS) SECOND END
•
NOMINAL LENGTH: 2.880 INCHES FIRST END IN
•
CONNECTION TYPE: THREADED INTERNAL BOSS SECOND END
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,COND-A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
RECESS NOMINAL DEPTH0.121 INCHES FIRST END IN
FLANGE SHAPERECTANGULAR WITH HOLES FIRST END
FLANGE FACE DESIGNRECESSED WITH GASKET GROOVE FIRST END
CONNECTION STYLEGASKET SEAL (BOSS) SECOND END
NOMINAL LENGTH2.880 INCHES FIRST END IN
CONNECTION TYPETHREADED INTERNAL BOSS SECOND END
CONNECTION TYPEFLANGE FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,COND-A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
BOLT HOLE NOMINAL DIAMETER0.438 INCHES FIRST END IN
LEG LENGTH2.120 INCHES NOMINAL FIRST END IN
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

No substitute or cross-reference records for this part.

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 640-1456?
640-1456 is a ELBOW,FLANGE TO BOSS.
What is the NSN for 640-1456?
640-1456 is cataloged in the U.S. Government catalog under NSN 4730-01-261-6589. This indicates validated use in U.S. government and defense supply chains.
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