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128EC10057-1 — CAP ASSEMBLY

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

128EC10057-1: CAP ASSEMBLY.

The CAP ASSEMBLY is a the manufacturer industrial component. Key specifications include end_item_identification: 45N AIRCRAFT, PROWLER EA-6B. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-972-3303, 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
128EC10057-1
NSN: 4730-00-972-3303
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 79RG9 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
end_item_identification45N AIRCRAFT, PROWLER EA-6B
NSN4730-00-972-3303
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 128EC10057-1 · 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: CONSISTS OF FOLLOWING ITEM NAMES PART NUMBERS AND QUANTITIES; WASHER AN960D10L 1; WASHER AN960D10 1; SCREW AN5201OR12 1; RIVET MS20470AD4 1; WASHER AN960D4L 1; CHAIN NAF1088-1A-4 1; NUT GN10W-1032 1; SPACER S5-D3-8 1; CAP 128ECM10503-1 1; GASKET 128EC10064-11 1; PLATE 128EC10063-13 1; AIR CON-FLOOR-COCKPIT PRESSURE TEST A
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCONSISTS OF FOLLOWING ITEM NAMES PART NUMBERS AND QUANTITIES; WASHER AN960D10L 1; WASHER AN960D10 1; SCREW AN5201OR12 1; RIVET MS20470AD4 1; WASHER AN960D4L 1; CHAIN NAF1088-1A-4 1; NUT GN10W-1032 1; SPACER S5-D3-8 1; CAP 128ECM10503-1 1; GASKET 128EC10064-11 1; PLATE 128EC10063-13 1; AIR CON-FLOOR-COCKPIT PRESSURE TEST A
END ITEM IDENTIFICATION45N AIRCRAFT, PROWLER EA-6B
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 128EC10057-1?
128EC10057-1 is a CAP ASSEMBLY.
What is the NSN for 128EC10057-1?
128EC10057-1 is cataloged in the U.S. Government catalog under NSN 4730-00-972-3303. 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.