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National Stock Number:
4820-01-170-1395
Federal Supply Class:
4820
National Item Identification Number:
011701395
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:
| 803-2177934-X2XX-18SPCLN | 80064 | NAVAL SHIP SYSTEMS COMMAND | | 803-2177934-X3XX-18SPCLN | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| BODY INSIDE DIAMETER | 0.471 INCHES NOMINAL | | CRITICALITY CODE JUSTIFICATION | ZZZY | | FLANGE DIAMETER | 0.937 INCHES NOMINAL | | FLANGE SEAT TO DISK END HEIGHT | 0.122 INCHES NOMINAL | | MATERIAL | NICKEL ALLOY OVERALL | | NOMINAL THREAD SIZE | 0.765 INCHES SINGLE THREADED PORTION | | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS | | SEAT ANGLE IN DEG | 15.000 NOMINAL | | SEATING SURFACE SHAPE | ANGULAR | | STYLE DESIGNATOR | THREADED FLANGED | | THREAD LENGTH | 0.222 INCHES NOMINAL SINGLE THREADED PORTION | | THREAD CLASS | 3A SINGLE THREADED PORTION | | THREAD QUANTITY PER INCH | 24 SINGLE THREADED PORTION | | THREAD SERIES DESIGNATOR | UNS SINGLE THREADED PORTION | | UNDER FLANGE HEIGHT | 0.315 INCHES NOMINAL |
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