Product Details | TUBE REDUCER

4730-01-012-8426 A straight tube fitting having a different size connection on each end. It is designed to join two tubes of different sizes. Excludes BUSHING (as modified).

Part Alternates: AS1368K2016, KC125C2016, KC125C20-16, KC125K2016, KC125K20-16, 4730-01-012-8426, 01-012-8426, 4730010128426, 010128426

Pipe, Tubing, Hose, and Fittings | Hose, Pipe, Tube, Lubrication, and Railing Fittings

Supply Group (FSG) NSN Assign. NIIN
47 20 NOV 1975 01-012-8426

Demand History | NSN 4730-01-012-8426

Part Number Request Date QTY Origin
4730-01-012-8426 2026-01-12 6 US
4730-01-012-8426 2026-01-05 6 US

Cross Reference | NSN 4730-01-012-8426

Part Number Cage Code Manufacturer
AS1368K2016 81343 SOCIETY OF AUTOMOTIVE ENGINEERS INC
KC125C20-16 22264 JOHN F KENNEDY SPACE CENTER DBA NASA
KC125K20-16 22264 JOHN F KENNEDY SPACE CENTER DBA NASA

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Technical Data | NSN 4730-01-012-8426

Characteristic Specifications
MATERIAL STEEL COMP 316 BODY
MATERIAL DOCUMENT AND CLASSIFICATION QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE BODY
SURFACE TREATMENT PASSIVATE OUTSIDE
CONNECTION TYPE THREADED EXTERNAL TUBE 1ST END THREADED EXTERNAL TUBE 2ND END
CONNECTION STYLE B64 FLARED 1ST END B64 FLARED 2ND END
SEAT ANGLE 37.0 DEGREES 1ST END 37.0 DEGREES 2ND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED 1.250 INCHES 1ST END 1.000 INCHES 2ND END
THREAD SERIES DESIGNATOR UN 2ND END
NOMINAL THREAD SIZE 1.312 INCHES 2ND END
THREAD QUANTITY PER INCH 12 2ND END
THREAD CLASS 3A 1ST END 3A 2ND END
NOMINAL OVERALL LENGTH 2.250 INCHES
REDUCER TYPE CONCENTRIC
SPECIAL FEATURES MACHINED GROOVE IN FLARED ENDS TO ACCOMMODATE SEAL RINGS PER KC103

Restrictions/Controls & Freight Information | NSN 4730-01-012-8426

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information