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512748 — NOSECUP VALVE SEAT ASSEMBLY

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

512748: NOSECUP VALVE SEAT ASSEMBLY.

The NOSECUP VALVE SEAT ASSEMBLY is a the manufacturer industrial component. Key specifications include end_item_identification: MASK,CHEMICAL-BIOLOGICAL M40A1 AND M42A2. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-269-2104, 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
512748
NSN: 4730-01-269-2104
NIINs: 012692104, 014962844, 016322593
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 1UVT5 — BRP US INC (USA)
SPECIFICATIONS
special_featuresTHE ASSEMBLY CONTAINS: 5-1-2798 NOSECUP VALVE SEAT TOPS(QTY.10) X 5-1-2799 NOSECUP VALVE SEAT BOTTOMS(QTY.10) X 5-1-2747 INSTRUCTION SHEET(QTY.1)
end_item_identificationMASK,CHEMICAL-BIOLOGICAL M40A1 AND M42A2
NSN4730-01-269-2104
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 512748 · 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
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 512748?
512748 is a NOSECUP VALVE SEAT ASSEMBLY.
What is the NSN for 512748?
512748 is cataloged in the U.S. Government catalog under NSN 4730-01-269-2104. 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.