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Technical Data Sheet
PartsTable / COMPONENT / 52-D-7784-1
52-D-7784-1 ✓ 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: 37.0 DEGREES FIRST END, thread_class: 1A SECOND END A, connection_type: THREADED EXTERNAL TUBE SECOND END, inside_diameter: 0.188 INCHES NOMINAL IN, connection_style: INVERTED FLARE SECOND END, thread_direction: RIGHT-HAND FIRST END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-355-3971, 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
52-D-7784-1
NSN: 4720-00-355-3971
FSC: 4720
CAGE: 21439 — CURTISS-WRIGHT FLOW CONTROL SERVICE, LLC DBA ENGINEERED ARRESTING SYSTEMS - ESCO DIV CW FLOW CONTROL SVC LLC DBA (USA)
SPECIFICATIONS
seat_angle37.0 DEGREES FIRST END
thread_class1A SECOND END A
connection_typeTHREADED EXTERNAL TUBE SECOND END
inside_diameter0.188 INCHES NOMINAL IN
connection_styleINVERTED FLARE SECOND END
thread_directionRIGHT-HAND FIRST END
nominal_thread_size0.438 INCHES FIRST 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_designatorUNS FIRST END
NSN4720-00-355-3971
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 52-D-7784-1 · 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
•
NOMINAL THREAD SIZE: 0.438 INCHES SECOND END IN
•
SEAT ANGLE: 37.0 DEGREES FIRST END
•
CONNECTION STYLE: INVERTED FLARE FIRST END
•
THREAD DIRECTION: RIGHT-HAND SECOND END
•
MEASURING METHOD AND LENGTH: 16.875 INCHES NOMINAL OVERALL IN
•
CONNECTION TYPE: THREADED INTERNAL TUBE FIRST END
•
END CONNECTION DESIGN: STRAIGHT FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.438 INCHES SECOND END IN
NOMINAL THREAD SIZE0.438 INCHES FIRST END IN
SEAT ANGLE37.0 DEGREES FIRST END
CONNECTION STYLEINVERTED FLARE FIRST END
THREAD DIRECTIONRIGHT-HAND SECOND END
MEASURING METHOD AND LENGTH16.875 INCHES NOMINAL OVERALL IN
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
END CONNECTION DESIGNSTRAIGHT FIRST END
THREAD CLASS1A SECOND END A
THREAD SERIES DESIGNATORUNS FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
A016338Interchangeable
interchangeable cross-reference
interchangeable
A-16338Interchangeable
interchangeable cross-reference
interchangeable
9X220-4Interchangeable
interchangeable cross-reference
interchangeable
NOD3138D1-5X51Interchangeable
interchangeable cross-reference
interchangeable
AN385-4-16Interchangeable
interchangeable cross-reference
interchangeable
8215Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 52-D-7784-1?
52-D-7784-1 is a HOSE ASSEMBLY,NONMETALLIC.
What parts can replace 52-D-7784-1?
There are 22 known substitutes for 52-D-7784-1: A016338, A-16338, 9X220-4 and 19 more. Substitute compatibility should be verified for your specific system.
Is 52-D-7784-1 still available?
52-D-7784-1 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