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Technical Data Sheet
PartsTable / COMPONENT / MS20819-3D
MS20819-3D ✓ 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: ALUMINUM ALLOY 7075, flange_width: 0.125 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN, overall_length: 0.390 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN, style_designator: SLEEVE, seat_angle_in_deg: 32.0, surface_treatment: ANODIZE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-163-6996, 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
MS20819-3D
NSN: 4730-01-163-6996
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialALUMINUM ALLOY 7075
flange_width0.125 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
overall_length0.390 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN
style_designatorSLEEVE
seat_angle_in_deg32.0
surface_treatmentANODIZE
casehardening_indicatorNOT CASEHARDENED
flange_outside_diameter0.329 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
sleeve_outside_diameter0.234 INCHES MINIMUM AND 0.237 INCHES MAXIMUM IN
material_document_and_classificationQQ-A-367, T73 FED SPEC SINGLE MATERIAL RESPONSE
hose/tube_outside_diameter_for_which_designed0.188 INCHES NOMINAL IN
NSN4730-01-163-6996
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS20819-3D · 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
•
FLANGE WIDTH: 0.125 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
•
SEAT ANGLE IN DEG: 32.0
•
FLANGE OUTSIDE DIAMETER: 0.329 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.188 INCHES NOMINAL IN
•
SLEEVE OUTSIDE DIAMETER: 0.234 INCHES MINIMUM AND 0.237 INCHES MAXIMUM IN
•
MATERIAL: ALUMINUM ALLOY 7075
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-367, T73 FED SPEC SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.390 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN
FLANGE WIDTH0.125 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
SEAT ANGLE IN DEG32.0
FLANGE OUTSIDE DIAMETER0.329 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.188 INCHES NOMINAL IN
SLEEVE OUTSIDE DIAMETER0.234 INCHES MINIMUM AND 0.237 INCHES MAXIMUM IN
MATERIALALUMINUM ALLOY 7075
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-367, T73 FED SPEC SINGLE MATERIAL RESPONSE
STYLE DESIGNATORSLEEVE
SURFACE TREATMENTANODIZE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
MILF5509AInterchangeable
interchangeable cross-reference
interchangeable
SAE-AS4841Interchangeable
interchangeable cross-reference
interchangeable
MS20819-40DInterchangeable
interchangeable cross-reference
interchangeable
ST7M411-12WInterchangeable
interchangeable cross-reference
interchangeable
ST7M411Interchangeable
interchangeable cross-reference
interchangeable
AN819-12ZInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS20819-3D?
MS20819-3D is a SLEEVE,FLARED,TUBE FITTING.
What parts can replace MS20819-3D?
There are 18 known substitutes for MS20819-3D: MILF5509A, SAE-AS4841, MS20819-40D and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS20819-3D?
MS20819-3D is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-163-6996. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026