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National Stock Number:
4820-01-241-2011
Federal Supply Class:
4820
National Item Identification Number:
012412011
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:
| 181547-81 | 99657 | MAROTTA CONTROLS INC | | 181547-81CP | 03950 | NAVAL INVENTORY CONTROL POINT MECHANICSBURG |
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Techincal Specification:
| BODY OUTSIDE DIAMETER | 1.499 INCHES MINIMUM | | BODY STEPPED INSIDE DIAMETER | 0.878 INCHES MAXIMUM SECOND STEP | | BODY STEPPED INSIDE DIAMETER | 0.987 INCHES MINIMUM FIRST STEP | | CRITICALITY CODE JUSTIFICATION | ZZZY | | OVERALL HEIGHT | 0.225 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-M-20693 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | PLASTIC OVERALL | | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330 | | SEAT RADIUS | 0.0025 INCHES MAXIMUM | | SEATING SURFACE SHAPE | RADIAL | | STYLE DESIGNATOR | PLAIN |
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