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1651037 — ADAPTER,THREADED

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1651037: ADAPTER,THREADED.

The ADAPTER,THREADED is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4730-01-279-9210, 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
1651037
NSN: 4730-01-279-9210
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 05869 — RAYTHEON COMPANY DIV RMD STRATEGIC (USA)
SPECIFICATIONS
Part Number1651037
NSN4730-01-279-9210
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1651037 · 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: MATERIAL STEEL CLASS 304 PER QQ-S763; FINISH PASSIVATE PER QQ-P-35; THICKNESS 0.234 IN.; OVERALL NOMINAL DIA 3.625 IN. WITH 28UNS-2A; INSIDE DIA 3.250 IN.; APERTURE DIA 2.635 IN.; BOLT HOLE DIA 0.146 IN. MIN AND 0.152 IN. MAX; 3 HOLES EQUALLY SPACED ON BOLT CIRCLE DIA OF 2.875 IN.; BOLT HOLE DIA 0.279 IN. MIN AND 0.289 IN. MAX BY 100 DEG CSK A
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONMATERIAL STEEL CLASS 304 PER QQ-S763; FINISH PASSIVATE PER QQ-P-35; THICKNESS 0.234 IN.; OVERALL NOMINAL DIA 3.625 IN. WITH 28UNS-2A; INSIDE DIA 3.250 IN.; APERTURE DIA 2.635 IN.; BOLT HOLE DIA 0.146 IN. MIN AND 0.152 IN. MAX; 3 HOLES EQUALLY SPACED ON BOLT CIRCLE DIA OF 2.875 IN.; BOLT HOLE DIA 0.279 IN. MIN AND 0.289 IN. MAX BY 100 DEG CSK A
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1651037?
1651037 is a ADAPTER,THREADED.
What is the NSN for 1651037?
1651037 is cataloged in the U.S. Government catalog under NSN 4730-01-279-9210. 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.