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PartsTable / COMPONENT / 501A1
501A1 ✓ 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, temp_rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF, thread_class: 2A FIRST END A, exterior_color: BLACK, connection_type: THREADED EXTERNAL PIPE SECOND END, inside_diameter: 0.188 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-203-6526, 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
501A1
NSN: 4720-00-203-6526
FSC: 4720
CAGE: 44940 — CUMMINS POWER GENERATION INC. (USA)
SPECIFICATIONS
seat_angle45.0 DEGREES FIRST END
temp_rating-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
thread_class2A FIRST END A
exterior_colorBLACK
connection_typeTHREADED EXTERNAL PIPE SECOND END
inside_diameter0.188 INCHES NOMINAL IN
connection_stylePLAIN SECOND END
outside_diameter0.375 INCHES NOMINAL IN
thread_directionRIGHT-HAND SECOND END
operating_pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
burst_test_pressure1200.0 POUNDS PER SQUARE INCH LBS
nominal_thread_size0.438 INCHES FIRST END IN
NSN4720-00-203-6526
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 501A1 · 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
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
•
THREAD SERIES DESIGNATOR: UNS FIRST END
•
LAYER COMPOSITION AND LOCATION: OUTER LAYER MOLDED RUBBER, SYNTHETIC AND 1ST LAYER WOVEN COTTON CORD
•
NOMINAL THREAD SIZE: 0.438 INCHES FIRST END IN
•
THREAD CLASS: 2A FIRST END A
•
EXTERIOR COLOR: BLACK
•
END CONNECTION DESIGN: STRAIGHT FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLEROUND
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
THREAD SERIES DESIGNATORUNS FIRST END
LAYER COMPOSITION AND LOCATIONOUTER LAYER MOLDED RUBBER, SYNTHETIC AND 1ST LAYER WOVEN COTTON CORD
NOMINAL THREAD SIZE0.438 INCHES FIRST END IN
THREAD CLASS2A FIRST END A
EXTERIOR COLORBLACK
END CONNECTION DESIGNSTRAIGHT FIRST END
CONNECTION STYLESWIVEL NUT, INVERTED FLARE FIRST END
CONNECTION STYLEPLAIN SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
76740Interchangeable
interchangeable cross-reference
interchangeable
4720PL1881150Interchangeable
interchangeable cross-reference
interchangeable
7765Interchangeable
interchangeable cross-reference
interchangeable
0776500Interchangeable
interchangeable cross-reference
interchangeable
401506-5Interchangeable
interchangeable cross-reference
interchangeable
401506Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 501A1?
501A1 is a HOSE ASSEMBLY,NONMETALLIC.
What parts can replace 501A1?
There are 25 known substitutes for 501A1: 76740, 4720PL1881150, 7765 and 22 more. Substitute compatibility should be verified for your specific system.
Is 501A1 still available?
501A1 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