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PartsTable / COMPONENT / J-1660
J-1660 ✓ 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 COLLAR,STEAM TURBINE is a the manufacturer industrial component. Key specifications include design_type: TUBULAR, thread_provision: THREADED LOCATION NOT OTHERWISE SPECIFIED, surface_treatment: PASSIVATE, general_characteristics_item_description: STEEL MIL-S-16782. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-199-3028, 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
J-1660
NSN: 4730-01-199-3028
FSC: 4730
CAGE: 16712 — SIEMENS ENERGY, INC. (USA)
SPECIFICATIONS
design_typeTUBULAR
thread_provisionTHREADED LOCATION NOT OTHERWISE SPECIFIED
surface_treatmentPASSIVATE
general_characteristics_item_descriptionSTEEL MIL-S-16782
NSN4730-01-199-3028
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: J-1660 · 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
•
DESIGN TYPE: TUBULAR
•
SURFACE TREATMENT: PASSIVATE
•
THREAD PROVISION: THREADED LOCATION NOT OTHERWISE SPECIFIED
TECHNICAL CHARACTERISTICS (FLIS)
DESIGN TYPETUBULAR
SURFACE TREATMENTPASSIVATE
THREAD PROVISIONTHREADED LOCATION NOT OTHERWISE SPECIFIED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
J-1660Interchangeable
interchangeable cross-reference
interchangeable
J-1660 PIECE 18Interchangeable
interchangeable cross-reference
interchangeable
141-0514Interchangeable
interchangeable cross-reference
interchangeable
J-1660 PIECE 19Interchangeable
interchangeable cross-reference
interchangeable
141-0515Interchangeable
interchangeable cross-reference
interchangeable
141-0513Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is J-1660?
J-1660 is a COLLAR,STEAM TURBINE.
What parts can replace J-1660?
There are 15 known substitutes for J-1660: J-1660, J-1660 PIECE 18, 141-0514 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for J-1660?
J-1660 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-199-3028. 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