4935-00-439-9755 CLUTCH ASSEMBLY,ADJ Index 7690-00-439-9761 MARKER,IDENTIFICATION

National Stock Number:
4820-00-439-9759

Federal Supply Class:
4820

National Item Identification Number:
004399759

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:
17181P00500198PRATT & WHITNEY CANADA CORP
17181P00577445RTX CORPORATION
17181P500198PRATT & WHITNEY CANADA CORP
17181P577445RTX CORPORATION


Techincal Specification:
BODY INSIDE DIAMETER2.182 INCHES MINIMUM AND 2.192 INCHES MAXIMUM
BODY OUTSIDE DIAMETER2.273 INCHES MINIMUM AND 2.277 INCHES MAXIMUM
FLANGE DIAMETER2.637 INCHES MINIMUM AND 2.638 INCHES MAXIMUM
FLANGE SEAT TO DISK END HEIGHT0.436 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
FSC APPLICATION DATAACFT ENG R1830
HARDNESS RATING90.0 ROCKWELL B MINIMUM AND 105.0 ROCKWELL B MAXIMUM BODY
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5700 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
SEATING SURFACE SHAPEANGULAR
SEAT ANGLE IN DEG45.000 NOMINAL
STYLE DESIGNATORPLAIN FLANGED
UNDER FLANGE HEIGHT0.136 INCHES MINIMUM AND 0.144 INCHES MAXIMUM


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