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National Stock Number:
4820-01-181-8657
Federal Supply Class:
4820
National Item Identification Number:
011818657
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:
| 208-4325303 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | 208-4325303 PIE | 80004 | PRECISION RADIATION INSTRUMENTS INC | | 6553-255 | 43689 | HUNTINGTON INGALLS INC | | 6553-255 PIECE 9 | 43689 | HUNTINGTON INGALLS INC | | 208-4325303 PIECE 9 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| STYLE DESIGNATOR | PLAIN THREADED | | OVERALL HEIGHT | 0.634 INCHES NOMINAL | | BODY INSIDE DIAMETER | 4.250 INCHES NOMINAL | | MATERIAL | NICKEL ALLOY OVERALL | | SEATING SURFACE SHAPE | FLAT | | THREAD SERIES DESIGNATOR | UN SINGLE THREADED PORTION | | NOMINAL THREAD SIZE | 5.375 INCHES SINGLE THREADED PORTION | | THREAD QUANTITY PER INCH | 12 SINGLE THREADED PORTION | | THREAD CLASS | 2A SINGLE THREADED PORTION | | THREAD LENGTH | 0.500 INCHES NOMINAL SINGLE THREADED PORTION | | SPECIAL FEATURES | W/2 STD WRENCH NOTCHES ON THE ID |
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