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Technical Data Sheet
PartsTable / COMPONENT / 1656265-4
1656265-4 ✓ 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 RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, leg_length: 1.062 INCHES NOMINAL FIRST END1.062 INCHES NOMINAL FIRST END IN, thread_class: 2A FIRST END2A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST ENDTHREADED EXTERNAL TUBE FIRST END, connection_style: GASKET SEAL, COMPRESSION (TUBE) FIRST ENDGASKET SEAL, COMPRESSION (TUBE) FIRST END, surface_treatment: CADMIUM OUTSIDE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-411-3852, 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
1656265-4
NSN: 4730-00-411-3852
FSC: 4730
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
leg_length1.062 INCHES NOMINAL FIRST END1.062 INCHES NOMINAL FIRST END IN
thread_class2A FIRST END2A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST ENDTHREADED EXTERNAL TUBE FIRST END
connection_styleGASKET SEAL, COMPRESSION (TUBE) FIRST ENDGASKET SEAL, COMPRESSION (TUBE) FIRST END
surface_treatmentCADMIUM OUTSIDE
operating_pressure2500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.875 INCHES FIRST END0.875 INCHES FIRST END IN
maximum_operating_temp135.0 CELSIUS SINGLE RESPONSE135.0 CELSIUS SINGLE RESPONSE DEGC
end_item_identificationWEAPON SYSTEM APPLICATIONWEAPON SYSTEM APPLICATION
thread_series_designatorNPTF THIRD ENDUNF SECOND END
furnished_items_and_quantity2 FOLLOWER RING AND 2 SHORT COUPLING NUT AND 2 PREFORMED PACKING
NSN4730-00-411-3852
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1656265-4 · 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
•
CONNECTION TYPE: THREADED INTERNAL PIPE THIRD ENDTHREADED INTERNAL PIPE THIRD END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES SECOND END IN
•
MAXIMUM OPERATING TEMP: 135.0 CELSIUS SINGLE RESPONSE135.0 CELSIUS SINGLE RESPONSE DEGC
•
CONNECTION STYLE: GASKET SEAL, COMPRESSION (TUBE) SECOND ENDGASKET SEAL, COMPRESSION (TUBE) SECOND END
•
THREAD SERIES DESIGNATOR: UNF SECOND ENDUNF FIRST END
•
THREAD CLASS: 2A SECOND END2A SECOND END A
•
NOMINAL THREAD SIZE: 0.375 INCHES THIRD END0.375 INCHES THIRD END IN
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPETHREADED INTERNAL PIPE THIRD ENDTHREADED INTERNAL PIPE THIRD END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES SECOND END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES SECOND END0.500 INCHES FIRST END IN
MAXIMUM OPERATING TEMP135.0 CELSIUS SINGLE RESPONSE135.0 CELSIUS SINGLE RESPONSE DEGC
CONNECTION STYLEGASKET SEAL, COMPRESSION (TUBE) SECOND ENDGASKET SEAL, COMPRESSION (TUBE) SECOND END
THREAD SERIES DESIGNATORUNF SECOND ENDUNF FIRST END
THREAD CLASS2A SECOND END2A SECOND END A
NOMINAL THREAD SIZE0.375 INCHES THIRD END0.375 INCHES THIRD END IN
MATERIALSTEEL OVERALL
CONNECTION TYPETHREADED EXTERNAL TUBE SECOND ENDTHREADED EXTERNAL TUBE SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
M6SInterchangeable
interchangeable cross-reference
interchangeable
62606Interchangeable
interchangeable cross-reference
interchangeable
620-0016Interchangeable
interchangeable cross-reference
interchangeable
6508Interchangeable
interchangeable cross-reference
interchangeable
10531902Interchangeable
interchangeable cross-reference
interchangeable
187673PC306Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1656265-4?
1656265-4 is a RELAY,ELECTROMAGNETIC.
What parts can replace 1656265-4?
There are 20 known substitutes for 1656265-4: M6S, 62606, 620-0016 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1656265-4?
1656265-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-411-3852. 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