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PartsTable / COMPONENT / 4CN 1/4 BRASS
4CN 1/4 BRASS ✓ 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 4CN 1/4 BRASS is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-339-4642, 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
4CN 1/4 BRASS
NSN: 4730-01-339-4642
FSC: 4730
CAGE: 3T9T9 — SWAGELOK CO (USA)
SPECIFICATIONS
Part Number4CN 1/4 BRASS
NSN4730-01-339-4642
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4CN 1/4 BRASS · 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: NPT ALL ENDS
•
CONNECTION TYPE: THREADED EXTERNAL PIPE ALL ENDS
•
MATERIAL: COPPER ALLOY AND STEEL OVERALL
•
STYLE DESIGNATOR: CENTER WRENCHING FACILITY
•
NOMINAL OVERALL LENGTH: 1.120 INCHES IN
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
•
REDUCED PASSAGE NOMINAL INSIDE DIAMETER: 0.280 INCHES ALL ENDS IN
•
NOMINAL THREAD SIZE: 0.250 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORNPT ALL ENDS
CONNECTION TYPETHREADED EXTERNAL PIPE ALL ENDS
MATERIALCOPPER ALLOY AND STEEL OVERALL
STYLE DESIGNATORCENTER WRENCHING FACILITY
NOMINAL OVERALL LENGTH1.120 INCHES IN
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
REDUCED PASSAGE NOMINAL INSIDE DIAMETER0.280 INCHES ALL ENDS IN
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
09485-3-15Interchangeable
interchangeable cross-reference
interchangeable
MPR9576-18A22Interchangeable
interchangeable cross-reference
interchangeable
1867767Interchangeable
interchangeable cross-reference
interchangeable
51-1835Interchangeable
interchangeable cross-reference
interchangeable
51-1835-1Interchangeable
interchangeable cross-reference
interchangeable
B-4-CNInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4CN 1/4 BRASS?
4CN 1/4 BRASS is a 4CN 1/4 BRASS.
What parts can replace 4CN 1/4 BRASS?
There are 6 known substitutes for 4CN 1/4 BRASS: 09485-3-15, MPR9576-18A22, 1867767 and 3 more. Substitute compatibility should be verified for your specific system.
Is 4CN 1/4 BRASS still available?
4CN 1/4 BRASS is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026