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MS51510A4MD4 — TEE,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MS51510A4MD4: TEE,TUBE.

The TEE,TUBE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, leg_length: 0.891 INCHES NOMINAL FIRST END IN, seat_angle: 37.0 DEGREES ALL ENDS, thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: FLARED (TUBE) ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-643-4003, 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
MS51510A4MD4
NSN: 4730-01-643-4003
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
leg_length0.891 INCHES NOMINAL FIRST END IN
seat_angle37.0 DEGREES ALL ENDS
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleFLARED (TUBE) ALL ENDS
nominal_thread_size0.438 INCHES ALL ENDS IN
end_item_identificationDDS N2 PIPE S.
thread_series_designatorUNF ALL ENDS
furnished_items_and_quantity3 COUPLING NUT AND 3 COUPLING SLEEVE
nominal_outside_diameter_tube_accommodated0.250 INCHES ALL ENDS IN
NSN4730-01-643-4003
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51510A4MD4 · 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 9
516-5486646 ITEM F76D4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
516-5486648 ITEM F180D4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
516-5486646 ITEM F76Reference document
Same NSN cross-reference
Reference document — Secondary reference
516-5486648 ITEM F180Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS51510A4MReference document
Same NSN cross-reference
Reference document — Identification reference
4JBTX-MReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS51510A4MD4?
MS51510A4MD4 is a TEE,TUBE.
What parts can replace MS51510A4MD4?
There are 9 known substitutes for MS51510A4MD4: 516-5486646 ITEM F76D4, 516-5486648 ITEM F180D4, 516-5486646 ITEM F76 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51510A4MD4?
MS51510A4MD4 is cataloged in the U.S. Government catalog under NSN 4730-01-643-4003. 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.