PartsTable
Technical Data Sheet
PartsTable / COMPONENT / CS4730-0121A19ELPQ
CS4730-0121A19ELPQ ✓ 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 BRAZING ALLOY,SILVER is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 903 OR COPPER ALLOY 922 OVERALL, connection_type: UNTHREADED INTERNAL PIPE ALL ENDS, connection_style: STREAMLINED W/ ONE BRAZING RING (PIPE) ALL ENDS, special_features: GROOVED W/BRAZING RINGS PACKAGED SEPARATELY, style_designator: PLAIN W/CONCAVE SIDES, operating_pressure: 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-542-5107, 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
CS4730-0121A19ELPQ
NSN: 4730-00-542-5107
FSC: 4730
CAGE: 16236 — DLA LAND AND MARITIME DBA ENGINEERING AND TECHNICAL SUPPORT DIV DOCUMENT STANDARDIZATION DIVISION (VENDOR ITEM DRAWINGS) (USA)
SPECIFICATIONS
materialCOPPER ALLOY 903 OR COPPER ALLOY 922 OVERALL
connection_typeUNTHREADED INTERNAL PIPE ALL ENDS
connection_styleSTREAMLINED W/ ONE BRAZING RING (PIPE) ALL ENDS
special_featuresGROOVED W/BRAZING RINGS PACKAGED SEPARATELY
style_designatorPLAIN W/CONCAVE SIDES
operating_pressure400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
maximum_operating_temp150.0 FAHRENHEIT SECOND RESPONSE DEGF
nominal_overall_length2.203 INCHES IN
end_item_identification23N SHIP, OHIO CLASS SSN (TRIDENT)
media_for_which_designedWATER-OIL-GAS SECOND RESPONSE
specification/standard_data81349-MIL-F-1183H GOVERNMENT SPECIFICATION
furnished_items_and_quantity2 BRAZING RING
NSN4730-00-542-5107
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: CS4730-0121A19ELPQ · 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
•
MAXIMUM OPERATING TEMP: 150.0 FAHRENHEIT SECOND RESPONSE DEGF
•
CONNECTION STYLE: STREAMLINED W/ ONE BRAZING RING (PIPE) ALL ENDS
•
NOMINAL PIPE SIZE ACCOMMODATED: 2.000 INCHES ALL ENDS IN
•
CONNECTION TYPE: UNTHREADED INTERNAL PIPE ALL ENDS
•
PIPE WALL THICKNESS DESIGNATION FOR WHICH DESIGNED: STANDARD ALL ENDS
•
STYLE DESIGNATOR: PLAIN W/CONCAVE SIDES
TECHNICAL CHARACTERISTICS (FLIS)
MAXIMUM OPERATING TEMP150.0 FAHRENHEIT SECOND RESPONSE DEGF
MAXIMUM OPERATING TEMP425.0 FAHRENHEIT FIRST RESPONSE DEGF
CONNECTION STYLESTREAMLINED W/ ONE BRAZING RING (PIPE) ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED2.000 INCHES ALL ENDS IN
END ITEM IDENTIFICATION23N SHIP, OHIO CLASS SSN (TRIDENT)
CONNECTION TYPEUNTHREADED INTERNAL PIPE ALL ENDS
PIPE WALL THICKNESS DESIGNATION FOR WHICH DESIGNEDSTANDARD ALL ENDS
STYLE DESIGNATORPLAIN W/CONCAVE SIDES
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390 FED SPEC 1ST MATERIAL RESPONSE OR ASTM-B61 ASSN STD 2ND MATERIAL RESPONSE OR ASTM-B62 ASSN STD 3RD MATERIAL RESPONSE OVERALL
FURNISHED ITEMS AND QUANTITY2 BRAZING RING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
214-5901-199293PCF5067Interchangeable
interchangeable cross-reference
interchangeable
320-3803-1438614PCF3Interchangeable
interchangeable cross-reference
interchangeable
CS4730-0121A01DLPQInterchangeable
interchangeable cross-reference
interchangeable
4699265F3Interchangeable
interchangeable cross-reference
interchangeable
MILF1183CPL2-5IInterchangeable
interchangeable cross-reference
interchangeable
MIL-F-1183Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CS4730-0121A19ELPQ?
CS4730-0121A19ELPQ is a BRAZING ALLOY,SILVER.
What parts can replace CS4730-0121A19ELPQ?
There are 26 known substitutes for CS4730-0121A19ELPQ: 214-5901-199293PCF5067, 320-3803-1438614PCF3, CS4730-0121A01DLPQ and 23 more. Substitute compatibility should be verified for your specific system.
Is CS4730-0121A19ELPQ still available?
CS4730-0121A19ELPQ 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