NSN 4820-01-222-0256

Part Details | VALVE SEAT

4820-01-222-0256 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: 255753 PIECE 15, 255753, 255751 PIECE 15, 255751, 4820-01-222-0256, 01-222-0256, 4820012220256, 012220256

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
48DEC 06, 198501-222-025622113 ( SEAT, VALVE )
REFERENCE DRAWINGS & PICTURES

PLAIN

Cross Reference | NSN 4820-01-222-0256
Part Number Cage Code Manufacturer
255753 PIECE 1543689HUNTINGTON INGALLS INCORPORATEDDIV NEWPORT NEWS
25575343689HUNTINGTON INGALLS INCORPORATEDDIV NEWPORT NEWS
255751 PIECE 1543689HUNTINGTON INGALLS INCORPORATEDDIV NEWPORT NEWS
25575143689HUNTINGTON INGALLS INCORPORATEDDIV NEWPORT NEWS
Technical Data | NSN 4820-01-222-0256
Characteristic Specifications
STYLE DESIGNATOR PLAIN
OVERALL HEIGHT2.456 INCHES NOMINAL
BODY OUTSIDE DIAMETER2.127 INCHES NOMINAL
BODY INSIDE DIAMETER0.360 INCHES NOMINAL
SEATING SURFACE SHAPE ANGULAR
SEAT ANGLE IN DEG30.000 NOMINAL