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AN819-20D — SLEEVE,FLARED,TUBE FITTING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AN819-20D: SLEEVE,FLARED,TUBE FITTING.

The SLEEVE,FLARED,TUBE FITTING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316, flange_width: 0.312 INCHES NOMINAL IN, overall_length: 0.906 INCHES NOMINAL IN, style_designator: SLEEVE, seat_angle_in_deg: 33.0, surface_treatment: PASSIVATE. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-078-8568, 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
AN819-20D
NSN: 4730-00-078-8568
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialSTEEL COMP 316
flange_width0.312 INCHES NOMINAL IN
overall_length0.906 INCHES NOMINAL IN
style_designatorSLEEVE
seat_angle_in_deg33.0
surface_treatmentPASSIVATE
casehardening_indicatorNOT CASEHARDENED
flange_outside_diameter1.534 INCHES NOMINAL IN
sleeve_outside_diameter1.339 INCHES NOMINAL IN
hose/tube_outside_diameter_for_which_designed1.250 INCHES NOMINAL IN
NSN4730-00-078-8568
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AN819-20D · 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
•
SEAT ANGLE IN DEG: 33.0
•
STYLE DESIGNATOR: SLEEVE
•
SLEEVE OUTSIDE DIAMETER: 1.339 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
SURFACE TREATMENT: PASSIVATE
•
FLANGE WIDTH: 0.312 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 316
TECHNICAL CHARACTERISTICS
SEAT ANGLE IN DEG33.0
STYLE DESIGNATORSLEEVE
OVERALL LENGTH0.906 INCHES NOMINAL IN
SLEEVE OUTSIDE DIAMETER1.339 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
SURFACE TREATMENTPASSIVATE
FLANGE WIDTH0.312 INCHES NOMINAL IN
MATERIALSTEEL COMP 316
FLANGE OUTSIDE DIAMETER1.534 INCHES NOMINAL IN
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED1.250 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 3
SAE-AS4841Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
MS20819-20KReference document
Same NSN cross-reference
Reference document — Secondary reference
SAE AS5176Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AN819-20D?
AN819-20D is a SLEEVE,FLARED,TUBE FITTING.
What parts can replace AN819-20D?
There are 3 known substitutes for AN819-20D: SAE-AS4841, MS20819-20K, SAE AS5176. Substitute compatibility should be verified for your specific system.
What is the NSN for AN819-20D?
AN819-20D is cataloged in the U.S. Government catalog under NSN 4730-00-078-8568. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.