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R45116T0403 — REDUCER,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

R45116T0403: REDUCER,TUBE.

The REDUCER,TUBE is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY UNS R54520 OVERALL, reducer_type: CONCENTRIC, thread_class: 3A ALL ENDS A, connection_style: CUSHION SEAL (TUBE) ALL ENDS, operating_pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, nominal_thread_size: 0.438 INCHES FIRST END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-006-4332, 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
R45116T0403
NSN: 4730-00-006-4332
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 50599 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV STRATOFLEX PRODUCT DIVISION (USA)
SPECIFICATIONS
materialTITANIUM ALLOY UNS R54520 OVERALL
reducer_typeCONCENTRIC
thread_class3A ALL ENDS A
connection_styleCUSHION SEAL (TUBE) ALL ENDS
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.438 INCHES FIRST END IN
maximum_operating_temp135.0 CELSIUS SINGLE RESPONSE DEGC
nominal_overall_length0.850 INCHES IN
thread_quantity_per_inch24 FIRST END
thread_series_designatorUNJS FIRST END
nominal_outside_diameter_tube_accommodated0.188 INCHES SECOND END IN
NSN4730-00-006-4332
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: R45116T0403 · 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 STYLE: CUSHION SEAL (TUBE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 0.850 INCHES IN
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL THREAD SIZE: 0.375 INCHES SECOND END IN
•
MAXIMUM OPERATING TEMP: 135.0 CELSIUS SINGLE RESPONSE DEGC
TECHNICAL CHARACTERISTICS
CONNECTION STYLECUSHION SEAL (TUBE) ALL ENDS
NOMINAL OVERALL LENGTH0.850 INCHES IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.188 INCHES SECOND END IN
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE0.375 INCHES SECOND END IN
NOMINAL THREAD SIZE0.438 INCHES FIRST END IN
MAXIMUM OPERATING TEMP135.0 CELSIUS SINGLE RESPONSE DEGC
THREAD CLASS3A ALL ENDS A
THREAD QUANTITY PER INCH24 FIRST END
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 5
4730PL1634809Reference document
Same NSN cross-reference
Reference document — Informative reference only
AE16111-4-3Reference document
Same NSN cross-reference
Reference document — Secondary reference
GR550W4-3Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
4730PL0565325Reference document
Same NSN cross-reference
Reference document — Informative reference only
C7568Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is R45116T0403?
R45116T0403 is a REDUCER,TUBE.
What parts can replace R45116T0403?
There are 5 known substitutes for R45116T0403: 4730PL1634809, AE16111-4-3, GR550W4-3 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R45116T0403?
R45116T0403 is cataloged in the U.S. Government catalog under NSN 4730-00-006-4332. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.