4820-00-863-8227 SEAT,VALVE Index 1440-00-863-8229 VALVE

National Stock Number:
4820-00-863-8228

Federal Supply Class:
4820

National Item Identification Number:
008638228

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:
212450210001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER
BUWEPSDWG212450244114BAE SYSTEMS LAND & ARMAMENTS L.P.


Techincal Specification:
HARDNESS RATING250.0 BRINELL STANDARD MINIMUM AND 275.0 BRINELL STANDARD MAXIMUM BODY
HARDNESS RATING250.0 BRINELL STANDARD MINIMUM AND 275.0 BRINELL STANDARD MAXIMUM FACE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624,COMP 8640 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE0.812 INCHES SINGLE THREADED PORTION
SEATING SURFACE SHAPEFLAT
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-P-16232,TYPE M,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPHOSPHATE OVERALL
THREAD CLASS3B SINGLE THREADED PORTION
THREAD LENGTH0.250 INCHES NOMINAL SINGLE THREADED PORTION
THREAD QUANTITY PER INCH16 SINGLE THREADED PORTION
THREAD SERIES DESIGNATORUN SINGLE THREADED PORTION


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