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MIL-P-10388 — ADAPTER,STRAIGHT,FLANGE TO PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MIL-P-10388: ADAPTER,STRAIGHT,FLANGE TO PIPE.

ADAPTER,STRAIGHT,FLANGE TO PIPE. Key specifications include material: ALUMINUM ALLOY 356.0 OVERALL, connection_type: UNTHREADED EXTERNAL PIPE ALL ENDS, connection_style: GROOVED (PIPE) ALL ENDS, special_features: BOTH ENDS GROOVED MALE, surface_treatment: ANODIZE OVERALL, operating_pressure: 230.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 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
MIL-P-10388
NSN: 4730-00-052-8031
NIINs: 000528031, 002027199, 002027201, 002027206, 002027207, 002027209, 002027210, 002027211, 002027212, 002027216, 002028214, 002028684, 002029501, 002029502, 002029503, 002029504, 002029505, 002029506, 002029507, 002029508, 002029509, 002029673, 002029674, 002029675, 002029677, 002029700, 002029763, 002736324, 002738056, 002738057, 002738178, 002738180, 002738299, 002738313, 002738314, 002738322, 002738359, 002738623, 002778022, 002782672, 002888569, 002889376, 002937110, 002937138, 002937145, 002937146, 004824033, 005411389, 006406234, 007793491, 009045172, 010164558, 010429043, 010429049, 011144547, 011560532, 011780296, 011780297, 011780317, 011806879, 011823449, 011878051, 011905537, 012256872, 013220293
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 356.0 OVERALL
connection_typeUNTHREADED EXTERNAL PIPE ALL ENDS
connection_styleGROOVED (PIPE) ALL ENDS
special_featuresBOTH ENDS GROOVED MALE
surface_treatmentANODIZE OVERALL
operating_pressure230.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_overall_length6.000 INCHES IN
media_for_which_designedWATER-OIL-GAS SINGLE RESPONSE
nominal_pipe_size_accommodated6.000 INCHES ALL ENDS IN
material_document_and_classificationQQ-A-601,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-A-8625,TYPE 2,CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN4730-00-052-8031
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MIL-P-10388 · 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
M10388-A09AI1C3BReference document
Same NSN cross-reference
Reference document — Secondary reference
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
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 MIL-P-10388?
MIL-P-10388 is a ADAPTER,STRAIGHT,FLANGE TO PIPE.
What parts can replace MIL-P-10388?
There are 3 known substitutes for MIL-P-10388: M10388-A09AI1C3B, A-A-52592, AA52592-A09AI1C3B. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-P-10388?
MIL-P-10388 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 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.