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Technical Data Sheet
PartsTable / COMPONENT / 5409-S17-6-4
5409-S17-6-4 ✓ 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 COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include special_features: 3/8 INCH ODF,VARIOUS MATERIAL,END CONNECTION FLARED-FOR NAVY NUCLEAR PROPULSION PLANT PRODUCTS ONLY IN, criticality_code_justification: ZZZY, reference_number_differentiating_characteristics: AS DIFFERENTIATED BY FREE FROM MERCURY CONTAMINATION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-175-1135, 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
5409-S17-6-4
NSN: 4730-01-175-1135
FSC: 4730
CAGE: 01276 — DANFOSS POWER SOLUTIONS II, LLC (USA)
SPECIFICATIONS
special_features3/8 INCH ODF,VARIOUS MATERIAL,END CONNECTION FLARED-FOR NAVY NUCLEAR PROPULSION PLANT PRODUCTS ONLY IN
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsAS DIFFERENTIATED BY FREE FROM MERCURY CONTAMINATION
NSN4730-01-175-1135
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 5409-S17-6-4 · 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
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: AS DIFFERENTIATED BY FREE FROM MERCURY CONTAMINATION
•
CRITICALITY CODE JUSTIFICATION: ZZZY
TECHNICAL CHARACTERISTICS (FLIS)
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSAS DIFFERENTIATED BY FREE FROM MERCURY CONTAMINATION
CRITICALITY CODE JUSTIFICATIONZZZY
SPECIAL FEATURES3/8 INCH ODF,VARIOUS MATERIAL,END CONNECTION FLARED-FOR NAVY NUCLEAR PROPULSION PLANT PRODUCTS ONLY IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
202208-18-16BInterchangeable
interchangeable cross-reference
interchangeable
1889863PC157Interchangeable
interchangeable cross-reference
interchangeable
2670-57 ITEM 13Interchangeable
interchangeable cross-reference
interchangeable
202220-16-16SInterchangeable
interchangeable cross-reference
interchangeable
2670-57 ITEM 84Interchangeable
interchangeable cross-reference
interchangeable
503-4556027Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5409-S17-6-4?
5409-S17-6-4 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 5409-S17-6-4?
There are 23 known substitutes for 5409-S17-6-4: 202208-18-16B, 1889863PC157, 2670-57 ITEM 13 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5409-S17-6-4?
5409-S17-6-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-175-1135. 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