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640-1453 — TEE,FLANGE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

640-1453: TEE,FLANGE TO BOSS.

The TEE,FLANGE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALLUNABLE TO DECODE, leg_length: 1.188 INCHES NOMINAL FIRST END IN, flange_shape: RECTANGULAR WITH HOLES THIRD END, thread_class: 3B FIRST END, nominal_width: 2.375 INCHES THIRD END IN, nominal_length: 2.875 INCHES THIRD END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-261-1028, 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
640-1453
NSN: 4730-01-261-1028
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 316 OVERALLUNABLE TO DECODE
leg_length1.188 INCHES NOMINAL FIRST END IN
flange_shapeRECTANGULAR WITH HOLES THIRD END
thread_class3B FIRST END
nominal_width2.375 INCHES THIRD END IN
nominal_length2.875 INCHES THIRD END IN
connection_typeTHREADED INTERNAL BOSS SECOND END
connection_styleGASKET SEAL (BOSS) FIRST END
surface_treatmentPASSIVATE OVERALLUNABLE TO DECODE
bolt_hole_quantity4 THIRD END
flange_face_designPLAIN THIRD ENDUNABLE TO DECODE
nominal_thread_size1.312 INCHES SECOND END IN
NSN4730-01-261-1028
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 640-1453 · 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
•
FLANGE SHAPE: RECTANGULAR WITH HOLES THIRD END
•
FLANGE FACE DESIGN: PLAIN THIRD ENDUNABLE TO DECODE
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALLUNABLE TO DECODE
•
CONNECTION STYLE: GASKET SEAL (BOSS) FIRST END
•
NOMINAL LENGTH: 2.875 INCHES THIRD END IN
•
CONNECTION TYPE: THREADED INTERNAL BOSS FIRST END
TECHNICAL CHARACTERISTICS
FLANGE SHAPERECTANGULAR WITH HOLES THIRD END
FLANGE FACE DESIGNPLAIN THIRD ENDUNABLE TO DECODE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALLUNABLE TO DECODE
CONNECTION STYLEGASKET SEAL (BOSS) FIRST END
CONNECTION STYLEGASKET SEAL (BOSS) SECOND END
NOMINAL LENGTH2.875 INCHES THIRD END IN
CONNECTION TYPETHREADED INTERNAL BOSS FIRST END
CONNECTION TYPETHREADED INTERNAL BOSS SECOND END
CONNECTION TYPEFLANGE THIRD END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,COND B FED SPEC SINGLE MATERIAL RESPONSE OVERALLUNABLE TO DECODE
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: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 640-1453?
640-1453 is a TEE,FLANGE TO BOSS.
What is the NSN for 640-1453?
640-1453 is cataloged in the U.S. Government catalog under NSN 4730-01-261-1028. This indicates validated use in U.S. government and defense supply chains.
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