PartsTable
Technical Data Sheet
F21816D4 ✓ Verified by PartsTable
· HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A FIRST END A, connection_type: THREADED EXTERNAL PIPE SECOND END, connection_style: PLAIN (PIPE) SECOND END, surface_treatment: ANODIZE OUTSIDE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-910-9868, 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
F21816D4
NSN: 4730-00-910-9868
FSC: 4730
CAGE: 00624 — EATON AEROQUIP LLC DBA JACKSON NORTH 1 DIV FLUID AND ELECTRICAL DISTRIBUTION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class3A FIRST END A
connection_typeTHREADED EXTERNAL PIPE SECOND END
connection_stylePLAIN (PIPE) SECOND END
surface_treatmentANODIZE OUTSIDE
nominal_thread_size0.125 INCHES SECOND END IN
nominal_overall_length1.109 INCHES IN
thread_series_designatorUNF FIRST END
nominal_outside_diameter_tube_accommodated0.250 INCHES FIRST END IN
NSN4730-00-910-9868
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: F21816D4 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
NOMINAL OVERALL LENGTH: 1.109 INCHES IN
CONNECTION TYPE: THREADED EXTERNAL PIPE SECOND END
NOMINAL THREAD SIZE: 0.125 INCHES SECOND END IN
CONNECTION STYLE: PLAIN (PIPE) SECOND END
THREAD SERIES DESIGNATOR: UNF FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL OVERALL LENGTH1.109 INCHES IN
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
NOMINAL THREAD SIZE0.125 INCHES SECOND END IN
CONNECTION STYLEPLAIN (PIPE) SECOND END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION STYLEFLARED (TUBE) FIRST END
THREAD SERIES DESIGNATORUNF FIRST END
NOMINAL THREAD SIZE0.438 INCHES FIRST END IN
SEAT ANGLE37.0 DEGREES FIRST END
MATERIALALUMINUM ALLOY 2024 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
AS4842/1Interchangeable
interchangeable cross-reference
interchangeable
01430Interchangeable
interchangeable cross-reference
interchangeable
10-25562Interchangeable
interchangeable cross-reference
interchangeable
340-6220512Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is F21816D4?
F21816D4 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace F21816D4?
There are 4 known substitutes for F21816D4: AS4842/1, 01430, 10-25562 and 1 more. Substitute compatibility should be verified for your specific system.
Is F21816D4 still available?
F21816D4 is currently cancelled.
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