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Technical Data Sheet
PartsTable / COMPONENT / AQ-1503-16
AQ-1503-16 ✓ 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

CYLINDER ASSEMBLY,ACTUATING,LINE. Key specifications include material: RUBBER SYNTHETIC TUBE, flow_angle: 90.0 DEGREES SECOND END, seat_angle: 37.0 DEGREES FIRST END, temp_rating: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF, flange_style: ROUND W/ OUT BOLT HOLES FIRST END, thread_class: 2B FIRST END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-450-9156, 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
AQ-1503-16
NSN: 4720-00-450-9156
FSC: 4720
CAGE: 2P555 — CHARLESTON RUBBER & GASKET CO INC (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC TUBE
flow_angle90.0 DEGREES SECOND END
seat_angle37.0 DEGREES FIRST END
temp_rating-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
flange_styleROUND W/ OUT BOLT HOLES FIRST END
thread_class2B FIRST END
exterior_colorBLACK
vacuum_in_torr50.8
connection_typePLAIN FACE FLANGE FIRST END
inside_diameter0.750 INCHES NOMINAL IN
connection_stylePLAIN FIRST END
flange_thickness0.100 INCHES NOMINAL FIRST END IN
NSN4720-00-450-9156
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: AQ-1503-16 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
11779Interchangeable
interchangeable cross-reference
interchangeable
RA3540-4Interchangeable
interchangeable cross-reference
interchangeable
5340PL1879022Interchangeable
interchangeable cross-reference
interchangeable
74537-5Interchangeable
interchangeable cross-reference
interchangeable
434-4297Interchangeable
interchangeable cross-reference
interchangeable
11430Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AQ-1503-16?
AQ-1503-16 is a CYLINDER ASSEMBLY,ACTUATING,LINE.
What parts can replace AQ-1503-16?
There are 25 known substitutes for AQ-1503-16: 11779, RA3540-4, 5340PL1879022 and 22 more. Substitute compatibility should be verified for your specific system.
Is AQ-1503-16 still available?
AQ-1503-16 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