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2621-166-04ASSY112 — ELBOW,FLANGE TO TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

2621-166-04ASSY112: ELBOW,FLANGE TO TUBE.

The ELBOW,FLANGE TO TUBE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, surface_treatment: PASSIVATE OVERALL, operating_pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, end_item_identification: 23N SHIP, OHIO CLASS ASSN (TRIDENT), material_document_and_classification: QQ-S-763,CL 304,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-173-1247, 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
2621-166-04ASSY112
NSN: 4730-01-173-1247
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
surface_treatmentPASSIVATE OVERALL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
end_item_identification23N SHIP, OHIO CLASS ASSN (TRIDENT)
material_document_and_classificationQQ-S-763,CL 304,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4730-01-173-1247
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2621-166-04ASSY112 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,CL 304,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 304 OVERALL
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,CL 304,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SURFACE TREATMENTPASSIVATE OVERALL
END ITEM IDENTIFICATION23N SHIP, OHIO CLASS ASSN (TRIDENT)
MATERIALSTEEL COMP 304 OVERALL
SUBSTITUTES & CROSS-REFERENCES 3
516-4695758Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
516-4695758F4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2621-166-04Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 2621-166-04ASSY112?
2621-166-04ASSY112 is a ELBOW,FLANGE TO TUBE.
What parts can replace 2621-166-04ASSY112?
There are 3 known substitutes for 2621-166-04ASSY112: 516-4695758, 516-4695758F4, 2621-166-04. Substitute compatibility should be verified for your specific system.
What is the NSN for 2621-166-04ASSY112?
2621-166-04ASSY112 is cataloged in the U.S. Government catalog under NSN 4730-01-173-1247. 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.