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M10388-A09AI1C3B — COUPLING,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

M10388-A09AI1C3B: COUPLING,PIPE.

The COUPLING,PIPE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6151 OVERALL, connection_style: GROOVED (PIPE) SECOND END, style_designator: GROOVED AND THREADED INTERNAL, surface_treatment: ENAMEL LUSTERLESS OVERALL, operating_pressure: 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, nominal_thread_size: 4.000 INCHES FIRST END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-052-8031, 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
M10388-A09AI1C3B
NSN: 4730-00-052-8031
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialALUMINUM ALLOY 6151 OVERALL
connection_styleGROOVED (PIPE) SECOND END
style_designatorGROOVED AND THREADED INTERNAL
surface_treatmentENAMEL LUSTERLESS OVERALL
operating_pressure600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size4.000 INCHES FIRST END IN
nominal_overall_length3.250 INCHES IN
media_for_which_designedWATER-OIL-GAS SINGLE RESPONSE
thread_series_designatorNPT FIRST END
nominal_pipe_size_accommodated4.000 INCHES FIRST END IN
material_document_and_classificationQQ-A-367,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
pipe_wall_thickness_designation_for_which_designedSCHEDULE STD SECOND END
NSN4730-00-052-8031
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: M10388-A09AI1C3B · 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 ACCOMMODATED: 4.000 INCHES SECOND END IN
•
CONNECTION STYLE: GROOVED (PIPE) SECOND END
•
NOMINAL OVERALL LENGTH: 3.250 INCHES IN
•
STYLE DESIGNATOR: GROOVED AND THREADED INTERNAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-367,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OPERATING PRESSURE: 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE ACCOMMODATED4.000 INCHES SECOND END IN
NOMINAL PIPE SIZE ACCOMMODATED4.000 INCHES FIRST END IN
CONNECTION STYLEGROOVED (PIPE) SECOND END
CONNECTION STYLEPLAIN (PIPE) FIRST END
NOMINAL OVERALL LENGTH3.250 INCHES IN
STYLE DESIGNATORGROOVED AND THREADED INTERNAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-367,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OPERATING PRESSURE600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE4.000 INCHES FIRST END IN
PIPE WALL THICKNESS DESIGNATION FOR WHICH DESIGNEDSCHEDULE STD SECOND END
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 3
A-A-52592Reference document
Same NSN cross-reference
Reference document — Identification reference
AA52592-A09AI1C3BSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MIL-P-10388Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 M10388-A09AI1C3B?
M10388-A09AI1C3B is a COUPLING,PIPE.
What parts can replace M10388-A09AI1C3B?
There are 3 known substitutes for M10388-A09AI1C3B: A-A-52592, AA52592-A09AI1C3B, MIL-P-10388. Substitute compatibility should be verified for your specific system.
What is the NSN for M10388-A09AI1C3B?
M10388-A09AI1C3B is cataloged in the U.S. Government catalog under NSN 4730-00-052-8031. 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.