NSN 4820-01-253-7662

Part Details | VALVE SEAT

4820-01-253-7662 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: 442R021, 4820-01-253-7662, 01-253-7662, 4820012537662, 012537662

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
48APR 24, 198701-253-766222113 ( SEAT, VALVE )
REFERENCE DRAWINGS & PICTURES

THREADED FLANGED

Cross Reference | NSN 4820-01-253-7662
Part Number Cage Code Manufacturer
442R02198939AEROCONTROLEX GROUP, INC.DBA AEROCONTROLEX
Technical Data | NSN 4820-01-253-7662
Characteristic Specifications
STYLE DESIGNATOR1 THREADED FLANGED
OVERALL HEIGHT0.123 INCHES MINIMUM AND 0.127 INCHES MAXIMUM
BODY OUTSIDE DIAMETER0.435 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
BODY INSIDE DIAMETER0.218 INCHES MINIMUM AND 0.219 INCHES MAXIMUM
SEATING SURFACE SHAPE ANGULAR
SEAT ANGLE IN DEG43.000 NOMINAL
TAPER MINOR DIAMETER0.310 INCHES MINIMUM AND 0.314 INCHES MAXIMUM
TAPER MAJOR DIAMETER0.435 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
TAPER LENGTH0.062 INCHES MINIMUM AND 0.064 INCHES MAXIMUM
FSC APPLICATION DATAAIRCRAFT HYDRAULIC SYSTEM