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National Stock Number:
4820-00-629-9897
Federal Supply Class:
4820
National Item Identification Number:
006299897
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.
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Manufacturer Information:
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Techincal Specification:
| BODY INSIDE DIAMETER | 1.875 INCHES NOMINAL | | HARDNESS RATING | 22.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM BODY | | HARDNESS RATING | 22.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM FACE | | OVERALL HEIGHT | 1.875 INCHES NOMINAL | | MATERIAL | STEEL COMP 414 OVERALL | | NOMINAL THREAD SIZE | 3.031 INCHES SINGLE THREADED PORTION | | SEATING SURFACE SHAPE | FLAT | | STYLE DESIGNATOR | PLAIN THREADED | | THREAD CLASS | 2A SINGLE THREADED PORTION | | THREAD LENGTH | 1.250 INCHES NOMINAL SINGLE THREADED PORTION | | THREAD SERIES DESIGNATOR | UNS SINGLE THREADED PORTION | | THREAD QUANTITY PER INCH | 18 SINGLE THREADED PORTION |
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