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PartsTable / COMPONENT / MS20819-5D
MS20819-5D ✓ 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 SLEEVE,FLARED,TUBE FITTING is a the manufacturer industrial component. Key specifications include material: STEEL, flange_width: 0.156 INCHES NOMINAL IN, overall_length: 0.438 INCHES NOMINAL IN, style_designator: SLEEVE, seat_angle_in_deg: 33.0, surface_treatment: CADMIUM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-287-3053, 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
MS20819-5D
NSN: 4730-00-287-3053
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL
flange_width0.156 INCHES NOMINAL IN
overall_length0.438 INCHES NOMINAL IN
style_designatorSLEEVE
seat_angle_in_deg33.0
surface_treatmentCADMIUM
casehardening_indicatorNOT CASEHARDENED
end_item_identificationGO KW GENERATOR
flange_outside_diameter0.445 INCHES NOMINAL IN
sleeve_outside_diameter0.366 INCHES NOMINAL IN
hose/tube_outside_diameter_for_which_designed0.313 INCHES NOMINAL IN
NSN4730-00-287-3053
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS20819-5D · 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
•
SLEEVE OUTSIDE DIAMETER: 0.366 INCHES NOMINAL IN
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.313 INCHES NOMINAL IN
•
FLANGE OUTSIDE DIAMETER: 0.445 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 33.0
•
FLANGE WIDTH: 0.156 INCHES NOMINAL IN
•
SURFACE TREATMENT: ANODIZE
•
MATERIAL: ALUMINUM ALLOY 7075
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.438 INCHES NOMINAL IN
SLEEVE OUTSIDE DIAMETER0.366 INCHES NOMINAL IN
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.313 INCHES NOMINAL IN
FLANGE OUTSIDE DIAMETER0.445 INCHES NOMINAL IN
SEAT ANGLE IN DEG33.0
FLANGE WIDTH0.156 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE
MATERIALALUMINUM ALLOY 7075
STYLE DESIGNATORSLEEVE
CASEHARDENING INDICATORNOT CASEHARDENED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
AN819-5Interchangeable
interchangeable cross-reference
interchangeable
50420Interchangeable
interchangeable cross-reference
interchangeable
55284Interchangeable
interchangeable cross-reference
interchangeable
ST7M411-5WInterchangeable
Same NIIN cross-reference
interchangeable
AN3220-05Interchangeable
Same NIIN cross-reference
interchangeable
66649-21Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS20819-5D?
MS20819-5D is a SLEEVE,FLARED,TUBE FITTING.
What parts can replace MS20819-5D?
There are 6 known substitutes for MS20819-5D: AN819-5, 50420, 55284 and 3 more. Substitute compatibility should be verified for your specific system.
Is MS20819-5D still available?
MS20819-5D 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