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National Stock Number:
4820-01-497-5669
Federal Supply Class:
4820
National Item Identification Number:
014975669
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:
| 803-5348084-4XX-05 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| BODY INSIDE DIAMETER | 3.505 INCHES NOMINAL | | FLANGE DIAMETER | 4.910 INCHES NOMINAL | | FLANGE SEAT TO DISK END HEIGHT | 0.750 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281, CL A OR B, HF OR CD FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | NICKEL ALLOY OVERALL | | NOMINAL THREAD SIZE | 4.513 INCHES SINGLE THREADED PORTION | | SEAT ANGLE IN DEG | 30.000 NOMINAL | | SEAT RADIUS | 0.020 INCHES NOMINAL | | SEATING SURFACE SHAPE | ANGULAR | | SPECIAL FEATURES | NICKLE COPPER MATERIAL; 11-1/2NS THREADS | | STYLE DESIGNATOR | THREADED FLANGED | | THREAD CLASS | 3A SINGLE THREADED PORTION | | THREAD LENGTH | 0.770 INCHES NOMINAL SINGLE THREADED PORTION | | THREAD SERIES DESIGNATOR | UNS SINGLE THREADED PORTION | | THREAD QUANTITY PER INCH | A11-1/2 SINGLE THREADED PORTION | | UNDER FLANGE HEIGHT | 0.870 INCHES NOMINAL |
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