4820-01-181-8656 SEAT,VALVE Index 4320-01-181-8658 PUMP,ROTARY

National Stock Number:
4820-01-181-8657

Federal Supply Class:
4820

National Item Identification Number:
011818657

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:
208-432530380064NAVAL SHIP SYSTEMS COMMAND
208-4325303 PIE80004PRECISION RADIATION INSTRUMENTS INC
6553-25543689HUNTINGTON INGALLS INC
6553-255 PIECE 943689HUNTINGTON INGALLS INC
208-4325303 PIECE 980064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
BODY INSIDE DIAMETER4.250 INCHES NOMINAL
MATERIALNICKEL ALLOY OVERALL
NOMINAL THREAD SIZE5.375 INCHES SINGLE THREADED PORTION
OVERALL HEIGHT0.634 INCHES NOMINAL
SEATING SURFACE SHAPEFLAT
SPECIAL FEATURESW/2 STD WRENCH NOTCHES ON THE ID
STYLE DESIGNATORPLAIN THREADED
THREAD CLASS2A SINGLE THREADED PORTION
THREAD LENGTH0.500 INCHES NOMINAL SINGLE THREADED PORTION
THREAD QUANTITY PER INCH12 SINGLE THREADED PORTION
THREAD SERIES DESIGNATORUN SINGLE THREADED PORTION


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