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41A57000-001 — ADAPTER,STRAIGHT,FLANGE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

41A57000-001: ADAPTER,STRAIGHT,FLANGE TO BOSS.

ADAPTER,STRAIGHT,FLANGE TO BOSS. Key specifications include end_item_identification: B-1B AIRCRAFT. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-171-0889, 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
41A57000-001
NSN: 4730-01-171-0889
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 43999 — THE BOEING COMPANY DIV LEGACY AM&M (USA)
SPECIFICATIONS
end_item_identificationB-1B AIRCRAFT
NSN4730-01-171-0889
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 41A57000-001 · 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESCONSIST OF: TW706-16DE CAP, AN816-6-6D ADAPTER, AN929-6 CAP AND AS568-216 O-RING // USED ON: L362C2016 INTERCOOLER HEAT EXCHANGER // THIS ITEM IS USED TO: INTERFACE HEAT EXCHANGER COOLANT CIRCUIT INLET AND OULET FLANGES WITH THE COOLANT TEST STAND
END ITEM IDENTIFICATIONB-1B AIRCRAFT
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
R-TBD-516Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 41A57000-001?
41A57000-001 is a ADAPTER,STRAIGHT,FLANGE TO BOSS.
What parts can replace 41A57000-001?
There is 1 known substitute for 41A57000-001: R-TBD-516. Substitute compatibility should be verified for your specific system.
What is the NSN for 41A57000-001?
41A57000-001 is cataloged in the U.S. Government catalog under NSN 4730-01-171-0889. This indicates validated use in U.S. government and defense supply chains.
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