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2603509-15 — SPOOL PIECE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

2603509-15: SPOOL PIECE.

The SPOOL PIECE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304, end_style: PLAIN FACE, LONG NECK, end_thickness: 0.250 INCHES NOMINAL IN, overall_length: 11.750 INCHES NOMINAL IN, end_outside_diameter: 6.000 INCHES NOMINAL IN, end_bolt_hole_diameter: 7.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-465-8442, 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
2603509-15
NSN: 4730-01-465-8442
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 11243 — COSMODYNE, LLC DBA COSMODYNE LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 304
end_stylePLAIN FACE, LONG NECK
end_thickness0.250 INCHES NOMINAL IN
overall_length11.750 INCHES NOMINAL IN
end_outside_diameter6.000 INCHES NOMINAL IN
end_bolt_hole_diameter7.000 INCHES NOMINAL IN
end_bolt_hole_quantity8
end_item_identificationNIMITZ CLASS CVN
end_bolt_circle_diameter7.750 INCHES NOMINAL IN
nominal_pipe_size_designation6.000 INCHES IN
reference_number_differentiating_characteristicsITEMS THAT REQUIRE SPECIAL CLEANING AND PACKAGING FOR OXYGEN/NITROGEN SERVICE
NSN4730-01-465-8442
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2603509-15 · 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
•
NOMINAL PIPE SIZE DESIGNATION: 6.000 INCHES IN
•
END THICKNESS: 0.250 INCHES NOMINAL IN
•
END BOLT HOLE DIAMETER: 7.000 INCHES NOMINAL IN
•
END STYLE: PLAIN FACE, LONG NECK
•
END BOLT HOLE QUANTITY: 8
•
END BOLT CIRCLE DIAMETER: 7.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE DESIGNATION6.000 INCHES IN
END THICKNESS0.250 INCHES NOMINAL IN
END BOLT HOLE DIAMETER7.000 INCHES NOMINAL IN
END STYLEPLAIN FACE, LONG NECK
OVERALL LENGTH11.750 INCHES NOMINAL IN
END BOLT HOLE QUANTITY8
END ITEM IDENTIFICATIONNIMITZ CLASS CVN
END BOLT CIRCLE DIAMETER7.750 INCHES NOMINAL IN
MATERIALSTEEL COMP 304
END OUTSIDE DIAMETER6.000 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
2603509-15CPSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
54401-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 2603509-15?
2603509-15 is a SPOOL PIECE.
What parts can replace 2603509-15?
There are 2 known substitutes for 2603509-15: 2603509-15CP, 54401-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 2603509-15?
2603509-15 is cataloged in the U.S. Government catalog under NSN 4730-01-465-8442. 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.