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PartsTable / COMPONENT / 17721 PC NO 19
17721 PC NO 19 ✓ 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,TUBE is a the manufacturer industrial component. Key specifications include maximum_operating_temp: 180.0 FAHRENHEIT SINGLE RESPONSE DEGF, end_item_identification: HEATER,WATER,ELECTRIC. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-556-7261, 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
17721 PC NO 19
NSN: 4730-01-556-7261
FSC: 4730
CAGE: 19857 — THE ELECTRIC HEATER CO DBA HUBBELL ELECTRIC HEATER CO. (USA)
SPECIFICATIONS
maximum_operating_temp180.0 FAHRENHEIT SINGLE RESPONSE DEGF
end_item_identificationHEATER,WATER,ELECTRIC
NSN4730-01-556-7261
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 17721 PC NO 19 · 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
•
MAXIMUM OPERATING TEMP: 180.0 FAHRENHEIT SINGLE RESPONSE DEGF
TECHNICAL CHARACTERISTICS (FLIS)
MAXIMUM OPERATING TEMP180.0 FAHRENHEIT SINGLE RESPONSE DEGF
END ITEM IDENTIFICATIONHEATER,WATER,ELECTRIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
SMC174753Interchangeable
interchangeable cross-reference
interchangeable
177DInterchangeable
interchangeable cross-reference
interchangeable
32802-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 17721 PC NO 19?
17721 PC NO 19 is a COUPLING,TUBE.
What parts can replace 17721 PC NO 19?
There are 3 known substitutes for 17721 PC NO 19: SMC174753, 177D, 32802-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 17721 PC NO 19?
17721 PC NO 19 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-556-7261. 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