5340-01-257-1742 CLAMP,LOOP Index 4820-01-257-1744 SEAT,VALVE

National Stock Number:
4820-01-257-1743

Federal Supply Class:
4820

National Item Identification Number:
012571743

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:
803-4384536-5XXX-13(SPCLN)80064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
BODY INSIDE DIAMETER1.000 INCHES MINIMUM AND 1.004 INCHES MAXIMUM
CRITICALITY CODE JUSTIFICATIONZZZY
FLANGE DIAMETER1.401 INCHES MINIMUM AND 1.411 INCHES MAXIMUM
FLANGE SEAT TO DISK END HEIGHT0.261 INCHES MINIMUM AND 0.271 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALNICKEL ALLOY OVERALL
NOMINAL THREAD SIZE1.500 INCHES SINGLE THREADED PORTION
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
SEAL ACCOMMODATION TYPEGROOVED
SEAT ANGLE IN DEG45.000 NOMINAL
SEATING SURFACE SHAPEANGULAR
SPECIAL FEATURESINSPECTION PER MIL-I-45208; SHIPMENT AND STORAGE PER MIL-STD-129; CLEAN PER MIL-STD-767
STYLE DESIGNATORTHREADED FLANGED
THREAD LENGTH0.172 INCHES NOMINAL SINGLE THREADED PORTION
THREAD CLASS3A SINGLE THREADED PORTION
THREAD QUANTITY PER INCH20 SINGLE THREADED PORTION
THREAD SERIES DESIGNATORUN SINGLE THREADED PORTION
UNDER FLANGE HEIGHT0.104 INCHES MINIMUM AND 0.114 INCHES MAXIMUM


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