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MS51503A4-4Z — ADAPTER,STRAIGHT,PIPE TO TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MS51503A4-4Z: ADAPTER,STRAIGHT,PIPE TO TUBE.

The ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_class: 2A SECOND END A, connection_type: THREADED INTERNAL PIPE FIRST END, connection_style: FLARED W/ GASKET SEAL (BOSS) SECOND END, operating_pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, nominal_thread_size: 0.250 INCHES FIRST END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-802-2818, 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
MS51503A4-4Z
NSN: 4730-00-802-2818
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: R1120 — SATAIR A/S (DNK)
SPECIFICATIONS
materialSTEEL OVERALL
thread_class2A SECOND END A
connection_typeTHREADED INTERNAL PIPE FIRST END
connection_styleFLARED W/ GASKET SEAL (BOSS) SECOND END
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.250 INCHES FIRST END IN
maximum_operating_temp121.0 FAHRENHEIT SINGLE RESPONSE DEGF
nominal_overall_length1.390 INCHES IN
end_item_identificationGRUMMAN A-10 ACFT
media_for_which_designedHYDRAULIC FLUID SINGLE RESPONSE
thread_series_designatorUNF SECOND END
nondefinitive_spec/std_data5C FIGURE
NSN4730-00-802-2818
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51503A4-4Z · 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
•
FURNISHED ITEMS AND QUANTITY: 1 FLARED SLEEVE AND 1 SHORT COUPLING NUT
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: J514 ASSN STD SINGLE TREATMENT RESPONSE AND QQ-P-416, TY 2, CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: FLARED W/ GASKET SEAL (BOSS) SECOND END
•
NOMINAL OVERALL LENGTH: 1.390 INCHES IN
•
CONNECTION TYPE: THREADED INTERNAL PIPE FIRST END
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 FLARED SLEEVE AND 1 SHORT COUPLING NUT
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONJ514 ASSN STD SINGLE TREATMENT RESPONSE AND QQ-P-416, TY 2, CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLEFLARED W/ GASKET SEAL (BOSS) SECOND END
CONNECTION STYLEPLAIN (PIPE) FIRST END
NOMINAL OVERALL LENGTH1.390 INCHES IN
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE0.438 INCHES SECOND END IN
NOMINAL THREAD SIZE0.250 INCHES FIRST END IN
SUBSTITUTES & CROSS-REFERENCES 6
MS51503A4-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
8612048-1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
J514Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS5150384-4Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
4-4GBTS-SReference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-F-18866Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS51503A4-4Z?
MS51503A4-4Z is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace MS51503A4-4Z?
There are 6 known substitutes for MS51503A4-4Z: MS51503A4-4, 8612048-1, J514 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51503A4-4Z?
MS51503A4-4Z is cataloged in the U.S. Government catalog under NSN 4730-00-802-2818. This indicates validated use in U.S. government and defense supply chains.
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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.