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PartsTable / COMPONENT / 2620-219X1 PC146
2620-219X1 PC146 ✓ 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 NUT,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, nut_style: TUBE COUPLING, nut_height: 0.590 INCHES NOMINAL IN, seat_angle: 43.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM, thread_class: 2B, thread_series: UNF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-201-2255, 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
2620-219X1 PC146
NSN: 4730-01-201-2255
FSC: 4730
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleTUBE COUPLING
nut_height0.590 INCHES NOMINAL IN
seat_angle43.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
fabrication_methodFORGED
length_to_shoulder0.440 INCHES NOMINAL IN
width_across_flats0.625 INCHES NOMINAL IN
nominal_thread_size0.438 INCHES IN
smallest_inside_diameter0.255 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
NSN4730-01-201-2255
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2620-219X1 PC146 · 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
•
SEAT ANGLE: 43.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM
•
MATERIAL: COPPER ALLOY OVERALL
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
•
THREAD SERIES: UNF
•
SMALLEST INSIDE DIAMETER: 0.255 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
NUT STYLE: TUBE COUPLING
•
NUT HEIGHT: 0.590 INCHES NOMINAL IN
•
FABRICATION METHOD: FORGED
TECHNICAL CHARACTERISTICS (FLIS)
SEAT ANGLE43.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM
MATERIALCOPPER ALLOY OVERALL
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
THREAD SERIESUNF
SMALLEST INSIDE DIAMETER0.255 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
NUT STYLETUBE COUPLING
NUT HEIGHT0.590 INCHES NOMINAL IN
FABRICATION METHODFORGED
NOMINAL TUBE OUTSIDE DIAMETER0.250 INCHES IN
WIDTH ACROSS FLATS0.625 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
SAE J513 4 010166BInterchangeable
interchangeable cross-reference
interchangeable
A5051Interchangeable
interchangeable cross-reference
interchangeable
J513Interchangeable
interchangeable cross-reference
interchangeable
845-2445071ITEM34Interchangeable
Same NIIN cross-reference
interchangeable
NS4-4Interchangeable
Same NIIN cross-reference
interchangeable
845-1889863 PC146Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2620-219X1 PC146?
2620-219X1 PC146 is a NUT,TUBE COUPLING.
What parts can replace 2620-219X1 PC146?
There are 6 known substitutes for 2620-219X1 PC146: SAE J513 4 010166B, A5051, J513 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2620-219X1 PC146?
2620-219X1 PC146 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-201-2255. 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