4820-01-268-3277 SEAT,VALVE Index 4820-01-268-3279 SEAT,VALVE

National Stock Number:
4820-01-268-3278

Federal Supply Class:
4820

National Item Identification Number:
012683278

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:
803-4384536-45A-1380064NAVAL SHIP SYSTEMS COMMAND
803-4384536-45A-8580064NAVAL SHIP SYSTEMS COMMAND
803438453611B1380064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
BODY INSIDE DIAMETER0.844 INCHES NOMINAL
FLANGE SEAT TO DISK END HEIGHT0.234 INCHES NOMINAL
UNDER FLANGE HEIGHT0.110 INCHES NOMINAL
MATERIALNICKEL ALLOY OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-288 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
SEATING SURFACE SHAPEFLAT
THREAD SERIES DESIGNATORUN SINGLE THREADED PORTION
NOMINAL THREAD SIZE1.188 INCHES SINGLE THREADED PORTION
THREAD QUANTITY PER INCH20 SINGLE THREADED PORTION
THREAD CLASS3A SINGLE THREADED PORTION


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