NSN 4820-01-203-7641

Part Details | VALVE SEAT

4820-01-203-7641 A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see INSERT, ENGINE VALVE SEAT.

Alternate Parts: 17552A, 17552-A, 4820-01-203-7641, 01-203-7641, 4820012037641, 012037641

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
48MAR 19, 198501-203-764122113 ( SEAT, VALVE )
REFERENCE DRAWINGS & PICTURES

THREADED FLANGED

Cross Reference | NSN 4820-01-203-7641
Part Number Cage Code Manufacturer
17552-A32869O. C. KECKLEY COMPANY
Technical Data | NSN 4820-01-203-7641
Characteristic Specifications
STYLE DESIGNATOR THREADED FLANGED
FLANGE DIAMETER3.438 INCHES NOMINAL
BODY INSIDE DIAMETER2.750 INCHES MINIMUM AND 2.752 INCHES MAXIMUM
FLANGE SEAT TO DISK END HEIGHT0.375 INCHES NOMINAL
UNDER FLANGE HEIGHT0.750 INCHES NOMINAL
SEATING SURFACE SHAPE FLAT
END ITEM IDENTIFICATIONMODEL 114 SIZE 4