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Technical Data Sheet
PartsTable / COMPONENT / MIL-H-25579
MIL-H-25579 ✓ Verified by PartsTable
— · PIPE SECTION
WHAT YOU NEED TO KNOW
Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW

The HOSE ASSEMBLY,NONMETALLIC is a the manufacturer industrial component. Key specifications include flow_angle: 45.0 DEGREES SECOND END, seat_angle: 37.0 DEGREES FIRST END, temp_rating: 450.0 FAHRENHEIT SINGLE RESPONSE DEGF, thread_class: 3A SECOND END A, exterior_color: BLACK, connection_type: THREADED INTERNAL TUBE SECOND END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-001-3962, 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-H-25579
NSN: 4720-00-001-3962
FSC: 4720
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
flow_angle45.0 DEGREES SECOND END
seat_angle37.0 DEGREES FIRST END
temp_rating450.0 FAHRENHEIT SINGLE RESPONSE DEGF
thread_class3A SECOND END A
exterior_colorBLACK
connection_typeTHREADED INTERNAL TUBE SECOND END
inside_diameter0.313 INCHES NOMINAL IN
connection_styleSWIVEL NUT FLARE FIRST END
outside_diameter0.469 INCHES MAXIMUM IN
thread_directionRIGHT-HAND FIRST END
operating_pressure1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
burst_test_pressure9000.0 POUNDS PER SQUARE INCH LBS
NSN4720-00-001-3962
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: MIL-H-25579 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
INSIDE DIAMETER: 0.406 INCHES NOMINAL IN
•
THREAD CLASS: 3B SECOND END
•
SEAT ANGLE: 37.0 DEGREES SECOND END
•
MINIMUM INSIDE BENDING RADIUS: 4.625 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND SECOND END
•
OUTSIDE DIAMETER: 0.562 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLEROUND
INSIDE DIAMETER0.406 INCHES NOMINAL IN
THREAD CLASS3B SECOND END
SEAT ANGLE37.0 DEGREES SECOND END
MINIMUM INSIDE BENDING RADIUS4.625 INCHES IN
THREAD DIRECTIONRIGHT-HAND SECOND END
THREAD DIRECTIONRIGHT-HAND FIRST END
OUTSIDE DIAMETER0.562 INCHES NOMINAL IN
SEAT ANGLE37.0 DEGREES FIRST END
FLOW ANGLE90.0 DEGREES SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
124C8-JS8-J90S8-17 1/2Interchangeable
Same NIIN cross-reference
interchangeable
MS8005H174CInterchangeable
Same NIIN cross-reference
interchangeable
MIL-DTL-25579Interchangeable
Same NIIN cross-reference
interchangeable
MS8000H174CInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-H-25579?
MIL-H-25579 is a HOSE ASSEMBLY,NONMETALLIC.
What parts can replace MIL-H-25579?
There are 4 known substitutes for MIL-H-25579: 124C8-JS8-J90S8-17 1/2, MS8005H174C, MIL-DTL-25579 and 1 more. Substitute compatibility should be verified for your specific system.
Is MIL-H-25579 still available?
MIL-H-25579 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026