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272S2000331-003 — FITTING,SEAT INTERLOCK

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

272S2000331-003: FITTING,SEAT INTERLOCK.

The FITTING,SEAT INTERLOCK is a the manufacturer industrial component. Key specifications include end_item_identification: AIRCRAFT MODEL B57, general_characteristics_item_description: STEEL,QQ-S-763 303 CONDITION A,2.360 IN. O/A LG,0.750 IN.

O/A DIA,2 EXTERNALLY THREADED ENDS PER MS33656E4 IN. This part is cataloged in the U.S. Government catalog under NSN 4730-00-552-4892, 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
272S2000331-003
NSN: 4730-00-552-4892
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 38597 — LOCKHEED MARTIN CORPORATION DIV ROTARY AND MISSION SYSTEMS (USA)
SPECIFICATIONS
end_item_identificationAIRCRAFT MODEL B57
general_characteristics_item_descriptionSTEEL,QQ-S-763 303 CONDITION A,2.360 IN. O/A LG,0.750 IN. O/A DIA,2 EXTERNALLY THREADED ENDS PER MS33656E4 IN
NSN4730-00-552-4892
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 272S2000331-003 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,QQ-S-763 303 CONDITION A,2.360 IN. O/A LG,0.750 IN. O/A DIA,2 EXTERNALLY THREADED ENDS PER MS33656E4 IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,QQ-S-763 303 CONDITION A,2.360 IN. O/A LG,0.750 IN. O/A DIA,2 EXTERNALLY THREADED ENDS PER MS33656E4 IN
END ITEM IDENTIFICATIONAIRCRAFT MODEL B57
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 272S2000331-003?
272S2000331-003 is a FITTING,SEAT INTERLOCK.
What is the NSN for 272S2000331-003?
272S2000331-003 is cataloged in the U.S. Government catalog under NSN 4730-00-552-4892. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.