4820-01-081-7871 SEAT,VALVE Index 5365-01-081-7873 PLUG,MACHINE THREAD

National Stock Number:
4820-01-081-7872

Federal Supply Class:
4820

National Item Identification Number:
010817872

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:
MC1254876050EATON AEROSPACE LLC M C AEROSPACE DIV DBA STERER ENGINEERING


Techincal Specification:
BODY OUTSIDE DIAMETER0.530 INCHES NOMINAL
BODY STEPPED INSIDE DIAMETER0.190 INCHES NOMINAL SECOND STEP
BODY STEPPED INSIDE DIAMETER0.313 INCHES NOMINAL FIRST STEP
FLANGE DIAMETER0.630 INCHES MINIMUM AND 0.632 INCHES MAXIMUM
FLANGE SEAT TO DISK END HEIGHT0.690 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225,TYPE2024-T351 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALALUMINUM ALLOY 2024 OVERALL
SEAT ANGLE IN DEG90.000 NOMINAL
SEATING SURFACE SHAPEANGULAR
SPECIAL FEATURESTWO HOLES 0.100 IN. DIA THRU
STYLE DESIGNATORPLAIN FLANGED
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTANODIZE OVERALL
UNDER FLANGE HEIGHT0.255 INCHES NOMINAL


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