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PartsTable / COMPONENT / CS-4730-0017
CS-4730-0017 ✓ 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 REDUCER,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, seat_angle: 37.0 DEGREES ALL ENDS, reducer_type: CONCENTRIC, thread_class: 3A ALL ENDS A, connection_style: INVERTED FLARE (TUBE) ALL ENDS, nominal_thread_size: 0.438 INCHES FIRST END IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-037-7850, 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
CS-4730-0017
NSN: 4730-00-037-7850
FSC: 4730
CAGE: 16236 — DLA LAND AND MARITIME DBA ENGINEERING AND TECHNICAL SUPPORT DIV DOCUMENT STANDARDIZATION DIVISION (VENDOR ITEM DRAWINGS) (USA)
SPECIFICATIONS
materialSTEEL OVERALL
seat_angle37.0 DEGREES ALL ENDS
reducer_typeCONCENTRIC
thread_class3A ALL ENDS A
connection_styleINVERTED FLARE (TUBE) ALL ENDS
nominal_thread_size0.438 INCHES FIRST END IN
nominal_overall_length0.900 INCHES IN
thread_series_designatorUNF ALL ENDS
reduced_passage_nominal_inside_diameter0.190 INCHES FIRST END IN
nominal_outside_diameter_tube_accommodated0.371 INCHES SECOND END IN
NSN4730-00-037-7850
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: CS-4730-0017 · 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
•
THREAD SERIES DESIGNATOR: UNF ALL ENDS
•
MATERIAL: STEEL OVERALL
•
NOMINAL THREAD SIZE: 0.438 INCHES FIRST END IN
•
REDUCER TYPE: CONCENTRIC
•
CONNECTION STYLE: INVERTED FLARE (TUBE) ALL ENDS
•
THREAD CLASS: 3A ALL ENDS A
•
REDUCED PASSAGE NOMINAL INSIDE DIAMETER: 0.230 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNF ALL ENDS
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE0.438 INCHES FIRST END IN
NOMINAL THREAD SIZE0.375 INCHES SECOND END IN
REDUCER TYPECONCENTRIC
CONNECTION STYLEINVERTED FLARE (TUBE) ALL ENDS
THREAD CLASS3A ALL ENDS A
REDUCED PASSAGE NOMINAL INSIDE DIAMETER0.230 INCHES SECOND END IN
SEAT ANGLE37.0 DEGREES ALL ENDS
REDUCED PASSAGE NOMINAL INSIDE DIAMETER0.190 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
00250-0023Interchangeable
interchangeable cross-reference
interchangeable
7017Interchangeable
interchangeable cross-reference
interchangeable
1-3514Interchangeable
interchangeable cross-reference
interchangeable
H414210Interchangeable
interchangeable cross-reference
interchangeable
71455R1Interchangeable
interchangeable cross-reference
interchangeable
7-952180Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CS-4730-0017?
CS-4730-0017 is a REDUCER,TUBE.
What parts can replace CS-4730-0017?
There are 13 known substitutes for CS-4730-0017: 00250-0023, 7017, 1-3514 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CS-4730-0017?
CS-4730-0017 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-037-7850. 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