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1551AS276-1 — UNION,PIPE TO TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1551AS276-1: UNION,PIPE TO TUBE.

The UNION,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, seat_type: BEVELED, connection_type: UNTHREADED INTERNAL TUBE FIRST END, connection_style: SOCKET (TUBE) FIRST END, style_designator: SCREWED, surface_treatment: CADMIUM THREAD PIECE. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-302-6641, 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
1551AS276-1
NSN: 4730-01-302-6641
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
seat_typeBEVELED
connection_typeUNTHREADED INTERNAL TUBE FIRST END
connection_styleSOCKET (TUBE) FIRST END
style_designatorSCREWED
surface_treatmentCADMIUM THREAD PIECE
nominal_thread_size2.000 INCHES SECOND END IN
nominal_overall_length3.500 INCHES IN
thread_series_designatorNPT SECOND END
criticality_code_justificationZZZY
material_document_and_classificationANSI B16.22 ASSN STD SINGLE MATERIAL RESPONSE OR ANSI B16.18 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
nominal_outside_diameter_tube_accommodated2.000 INCHES FIRST END IN
NSN4730-01-302-6641
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1551AS276-1 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY I FED SPEC SINGLE TREATMENT RESPONSE THREAD PIECE
•
CONNECTION STYLE: SOCKET (TUBE) FIRST END
•
NOMINAL OVERALL LENGTH: 3.500 INCHES IN
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
CONNECTION TYPE: UNTHREADED INTERNAL TUBE FIRST END
•
STYLE DESIGNATOR: SCREWED
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY I FED SPEC SINGLE TREATMENT RESPONSE THREAD PIECE
CONNECTION STYLESOCKET (TUBE) FIRST END
CONNECTION STYLEPLAIN (PIPE) SECOND END
NOMINAL OVERALL LENGTH3.500 INCHES IN
CRITICALITY CODE JUSTIFICATIONZZZY
CONNECTION TYPEUNTHREADED INTERNAL TUBE FIRST END
CONNECTION TYPETHREADED INTERNAL PIPE SECOND END
STYLE DESIGNATORSCREWED
MATERIAL DOCUMENT AND CLASSIFICATIONANSI B16.22 ASSN STD SINGLE MATERIAL RESPONSE OR ANSI B16.18 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED2.000 INCHES FIRST END IN
SUBSTITUTES & CROSS-REFERENCES 4
733-3-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
A-11427Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
1551AS276Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
9733-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 1551AS276-1?
1551AS276-1 is a UNION,PIPE TO TUBE.
What parts can replace 1551AS276-1?
There are 4 known substitutes for 1551AS276-1: 733-3-2, A-11427, 1551AS276 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1551AS276-1?
1551AS276-1 is cataloged in the U.S. Government catalog under NSN 4730-01-302-6641. This indicates validated use in U.S. government and defense supply chains.
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