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C28509-1 — COUPLING,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

C28509-1: COUPLING,TUBE.

The COUPLING,TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 OVERALL, connection_type: UNTHREADED INTERNAL TUBE ALL ENDS, connection_style: PLAIN (TUBE) FIRST END, style_designator: PLAIN, surface_treatment: ANODIZE OVERALL, nominal_overall_length: 3.370 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-375-0320, 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
C28509-1
NSN: 4730-01-375-0320
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 70167 — AIR CRUISERS COMPANY, LLC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
connection_typeUNTHREADED INTERNAL TUBE ALL ENDS
connection_stylePLAIN (TUBE) FIRST END
style_designatorPLAIN
surface_treatmentANODIZE OVERALL
nominal_overall_length3.370 INCHES IN
nominal_outside_diameter_tube_accommodated3.750 INCHES ALL ENDS IN
surface_treatment_document_and_classificationMIL-A-8625,TYPE I MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN4730-01-375-0320
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: C28509-1 · 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: MIL-A-8625,TYPE I MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: CRIMPED (TUBE) SECOND END
•
NOMINAL OVERALL LENGTH: 3.370 INCHES IN
•
CONNECTION TYPE: UNTHREADED INTERNAL TUBE ALL ENDS
•
STYLE DESIGNATOR: PLAIN
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 3.750 INCHES ALL ENDS IN
•
SURFACE TREATMENT: ANODIZE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE I MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLECRIMPED (TUBE) SECOND END
CONNECTION STYLEPLAIN (TUBE) FIRST END
NOMINAL OVERALL LENGTH3.370 INCHES IN
CONNECTION TYPEUNTHREADED INTERNAL TUBE ALL ENDS
STYLE DESIGNATORPLAIN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED3.750 INCHES ALL ENDS IN
SURFACE TREATMENTANODIZE OVERALL
MATERIALALUMINUM ALLOY 6061 OVERALL
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
C28509Reference 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 C28509-1?
C28509-1 is a COUPLING,TUBE.
What parts can replace C28509-1?
There is 1 known substitute for C28509-1: C28509. Substitute compatibility should be verified for your specific system.
What is the NSN for C28509-1?
C28509-1 is cataloged in the U.S. Government catalog under NSN 4730-01-375-0320. This indicates validated use in U.S. government and defense supply chains.
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