Product Details | TUBE TO BOSS TEE

4730-01-268-9478 A fitting having three connections with the branch connection fixed at 90 degrees (1.5705 radians) to the run. The tube connection(s) has machine threads (straight threads other than pipe or hose series) designed to accommodate a tube, or is unthreaded and designed to accommodate a tube. The boss connection(s) has external or internal machine threads (straight threads other than pipe or hose series), and is designed to facilitate a gasket, preformed packing, washer, or the like, to form a seal at the boss. It may have side inlet(s). It is used as a junction at the intersection of a tube or fitting and a boss or boss fitting on items such as a tank, housing, valve fitting, or the like. See also TEE, TUBE; and TEE, PIPE TO TUBE. Excludes CONNECTOR, MULTIPLE, FLUID PRESSURE LINE.

Part Alternates: AS4311K20, KC120C20, KC120K20, 4730-01-268-9478, 01-268-9478, 4730012689478, 012689478

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

Supply Group (FSG) NSN Assign. NIIN
47 10 DEC 1987 01-268-9478

Cross Reference | NSN 4730-01-268-9478

Part Number Cage Code Manufacturer
AS4311K20 81343 SOCIETY OF AUTOMOTIVE ENGINEERS INC
KC120C20 22264 JOHN F KENNEDY SPACE CENTER DBA NASA
KC120K20 22264 JOHN F KENNEDY SPACE CENTER DBA NASA

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Technical Data | NSN 4730-01-268-9478

Characteristic Specifications
MATERIAL STEEL COMP 316 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT PASSIVATE OVERALL
CONNECTION TYPE THREADED EXTERNAL TUBE 1ST END THREADED INTERNAL BOSS 2ND END THREADED EXTERNAL TUBE 3RD END
CONNECTION STYLE B64 FLARED 1ST END B9 GASKET SEAL 2ND END B64 FLARED 3RD END
SEAT ANGLE 37.0 DEGREES 1ST END 37.0 DEGREES 3RD END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED 1.250 INCHES 1ST END 1.250 INCHES 3RD END
THREAD SERIES DESIGNATOR UN 1ST END UN 2ND END UN 3RD END
NOMINAL THREAD SIZE 1.625 INCHES 1ST END 1.625 INCHES 2ND END 1.625 INCHES 3RD END
THREAD QUANTITY PER INCH 12 1ST END 12 2ND END 12 3RD END
THREAD CLASS 3A 1ST END 3A 3RD END
LEG LENGTH 3.031 INCHES MINIMUM 1ST END 1.719 INCHES MINIMUM 2ND END 2.250 INCHES MINIMUM 3RD END
SPECIAL FEATURES KC120C20; MACHINED GROOVE IN FLARED ENDS TO ACCOMMODATE SEAL RING PER KC103

Restrictions/Controls & Freight Information | NSN 4730-01-268-9478

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