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National Stock Number:
4820-01-442-0439
Federal Supply Class:
4820
National Item Identification Number:
014420439
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:
| 218020209 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 2643-1002-63 | 96169 | ELECTRIC BOAT CORPORATION | | 6556655 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 801-6556655 FIND A6 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 801-6556655-A6 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 2643-1002-63 FN A6 | 96169 | ELECTRIC BOAT CORPORATION |
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Techincal Specification:
| STYLE DESIGNATOR | PLAIN | | OVERALL HEIGHT | 1.375 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 5.140 INCHES NOMINAL | | BODY INSIDE DIAMETER | 4.625 INCHES NOMINAL | | MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE SEAT | | HARDNESS RATING | 115.0 ROCKWELL R NOMINAL SEAT | | SEATING SURFACE SHAPE | FLAT | | THREAD SERIES DESIGNATOR | UN SINGLE THREADED PORTION | | NOMINAL THREAD SIZE | 5.250 INCHES SINGLE THREADED PORTION | | THREAD QUANTITY PER INCH | 12 SINGLE THREADED PORTION | | THREAD CLASS | 3A SINGLE THREADED PORTION | | THREAD LENGTH | 0.752 INCHES NOMINAL SINGLE THREADED PORTION | | SPECIAL FEATURES | A/K/A SEAT, LOWER |
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