1660-00-771-8889 BODY,VALVE Index 4730-00-771-8894 STRAINER,OIL

National Stock Number:
4820-00-771-8890

Federal Supply Class:
4820

National Item Identification Number:
007718890

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:
1602973-199251MISSION SYSTEMS DAVENPORT INC.


Techincal Specification:
BODY OUTSIDE DIAMETER0.265 INCHES NOMINAL
BODY STEPPED INSIDE DIAMETER0.234 INCHES NOMINAL FIRST STEP
BODY STEPPED INSIDE DIAMETER0.281 INCHES NOMINAL SECOND STEP
BODY STEPPED INSIDE DIAMETER0.438 INCHES NOMINAL THIRD STEP
BODY STEPPED INSIDE DIAMETER0.625 INCHES NOMINAL FOURTH STEP
FLANGE DIAMETER0.687 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT0.625 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-268,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 2024 OVERALL
SEATING SURFACE SHAPEFLAT
STYLE DESIGNATORPLAIN FLANGED
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL
UNDER FLANGE HEIGHT0.057 INCHES NOMINAL


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