5120-01-049-5841 HANDLE,SOCKET WRENCH Index 9905-01-049-5845 PLATE,INSTRUCTION

National Stock Number:
4820-01-049-5843

Federal Supply Class:
4820

National Item Identification Number:
010495843

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:
3004516780EATON AEROSPACE LLC


Techincal Specification:
STYLE DESIGNATORPLAIN FLANGED
FLANGE DIAMETER0.7490 INCHES MINIMUM AND
0.7495 INCHES MAXIMUM
BODY OUTSIDE DIAMETER0.635 INCHES MINIMUM AND
0.638 INCHES MAXIMUM
FLANGE SEAT TO DISK END HEIGHT0.135 INCHES MINIMUM AND
0.139 INCHES MAXIMUM
UNDER FLANGE HEIGHT0.631 INCHES MINIMUM AND
0.635 INCHES MAXIMUM
BODY STEPPED INSIDE DIAMETER0.375 INCHES NOMINAL FIRST STEP
0.390 INCHES MINIMUM AND
0.410 INCHES MAXIMUM SECOND STEP
0.187 INCHES NOMINAL THIRD STEP
MATERIALSTEEL COMP 440C OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING43.0 ROCKWELL C MINIMUM AND
47.0 ROCKWELL C MAXIMUM OVERALL
SEATING SURFACE SHAPEFLAT
CRITICALITY CODE JUSTIFICATIONABKK


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