5970-00-249-5501 INSULATOR,WASHER Index 6650-00-249-5504 GUIDE,BORESCOPE

National Stock Number:
4820-00-249-5502

Federal Supply Class:
4820

National Item Identification Number:
002495502

Description:
SEAT,VALVE

Detail:
A replaceable item designed to provide a circular 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.


Manufacturer Information:
66141-302-194756THE BOEING COMPANY


Techincal Specification:
STYLE DESIGNATORPLAIN
OVERALL HEIGHT0.450 INCHES NOMINAL
BODY OUTSIDE DIAMETER0.401 INCHES MINIMUM AND
0.411 INCHES MAXIMUM
BODY INSIDE DIAMETER0.312 INCHES MINIMUM AND
0.314 INCHES MAXIMUM
MATERIALNICKEL ALLOY A OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-286,CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTTIN OVERALL
SEATING SURFACE SHAPEFLAT
THE MANUFACTURERS DATA
MANUFACTURERS CODE94756
DESIGN CONTROL REFERENCE66141-302-1


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