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National Stock Number:
4820-01-442-0424
Federal Supply Class:
4820
National Item Identification Number:
014420424
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:
| 218020208 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 2643-1002-63 | 96169 | ELECTRIC BOAT CORPORATION | | 6556655 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 801-6556655 FIND A5 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 801-6556655-A5 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 2643-1002-63 FN A5 | 96169 | ELECTRIC BOAT CORPORATION |
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Techincal Specification:
| BODY INSIDE DIAMETER | 4.625 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 5.360 INCHES NOMINAL | | FLANGE DIAMETER | 5.750 INCHES NOMINAL | | FLANGE SEAT TO DISK END HEIGHT | 0.600 INCHES NOMINAL | | HARDNESS RATING | 115.0 ROCKWELL R NOMINAL SEAT | | MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE SEAT | | NOMINAL THREAD SIZE | 5.500 INCHES SINGLE THREADED PORTION | | SPECIAL FEATURES | A/K/A SEAT UPPER | | SEATING SURFACE SHAPE | FLAT | | STYLE DESIGNATOR | PLAIN FLANGED | | THREAD CLASS | 3A SINGLE THREADED PORTION | | THREAD LENGTH | 0.650 INCHES NOMINAL SINGLE THREADED PORTION | | THREAD QUANTITY PER INCH | 12 SINGLE THREADED PORTION | | THREAD SERIES DESIGNATOR | UN SINGLE THREADED PORTION | | UNDER FLANGE HEIGHT | 0.775 INCHES NOMINAL |
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