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501A9 ✓ 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 seat_angle: 45.0 DEGREES FIRST END, thread_class: 2B FIRST END, connection_type: THREADED EXTERNAL TUBE FIRST END, inside_diameter: 0.250 INCHES NOMINAL IN, connection_style: SWIVEL NUT, INVERTED FLARE FIRST END, thread_direction: RIGHT-HAND FIRST END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-790-9334, 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
501A9
NSN: 4720-00-790-9334
FSC: 4720
CAGE: 44940 — CUMMINS POWER GENERATION INC. (USA)
SPECIFICATIONS
seat_angle45.0 DEGREES FIRST END
thread_class2B FIRST END
connection_typeTHREADED EXTERNAL TUBE FIRST END
inside_diameter0.250 INCHES NOMINAL IN
connection_styleSWIVEL NUT, INVERTED FLARE FIRST END
thread_directionRIGHT-HAND FIRST END
nominal_thread_size0.125 INCHES SECOND END IN
end_connection_designSTRAIGHT SECOND END
inside_surface_conditionSMOOTH
media_for_which_designedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
thread_quantity_per_inch24 FIRST END
thread_series_designatorNPT SECOND END
NSN4720-00-790-9334
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 501A9 · 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
•
THREAD CLASS: 2B FIRST END
•
INSIDE SURFACE CONDITION: SMOOTH
•
THREAD QUANTITY PER INCH: 24 FIRST END
•
CONNECTION STYLE: PLAIN SECOND END
•
SEAT ANGLE: 45.0 DEGREES FIRST END
•
INSIDE DIAMETER: 0.250 INCHES NOMINAL IN
•
MEASURING METHOD AND LENGTH: 36.000 INCHES NOMINAL OVERALL IN
•
END CONNECTION DESIGN: STRAIGHT FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2B FIRST END
INSIDE SURFACE CONDITIONSMOOTH
THREAD QUANTITY PER INCH24 FIRST END
CONNECTION STYLEPLAIN SECOND END
SEAT ANGLE45.0 DEGREES FIRST END
INSIDE DIAMETER0.250 INCHES NOMINAL IN
MEASURING METHOD AND LENGTH36.000 INCHES NOMINAL OVERALL IN
END CONNECTION DESIGNSTRAIGHT FIRST END
THREAD DIRECTIONRIGHT-HAND SECOND END
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
SK5019Interchangeable
interchangeable cross-reference
interchangeable
D-42085 PIECE 75Interchangeable
interchangeable cross-reference
interchangeable
5019Interchangeable
interchangeable cross-reference
interchangeable
118430Interchangeable
interchangeable cross-reference
interchangeable
GGY45Interchangeable
interchangeable cross-reference
interchangeable
5680E6027Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 501A9?
501A9 is a HOSE ASSEMBLY,NONMETALLIC.
What parts can replace 501A9?
There are 24 known substitutes for 501A9: SK5019, D-42085 PIECE 75, 5019 and 21 more. Substitute compatibility should be verified for your specific system.
Is 501A9 still available?
501A9 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