NSN 4820-01-171-1978
Part Details | VALVE SEAT
4820-01-171-1978 A replaceable item designed to provide a 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.
Alternate Parts: 876827603ITEM13, 87682-7603ITEM13, 876827603, 87682-7603, 5224677496ITEM13, 522-4677496ITEM13, 5224677496, 522-4677496, 4820-01-171-1978, 01-171-1978, 4820011711978, 011711978
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | FEB 04, 1984 | 01-171-1978 | 22113 ( SEAT, VALVE ) |
REFERENCE DRAWINGS & PICTURES
PLAIN FLANGED
Cross Reference | NSN 4820-01-171-1978
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 87682-7603ITEM13 | 96169 | ELECTRIC BOAT CORPORATION |
| 87682-7603 | 96169 | ELECTRIC BOAT CORPORATION |
| 522-4677496ITEM13 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
| 522-4677496 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
Technical Data | NSN 4820-01-171-1978
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | PLAIN FLANGED |
| FLANGE DIAMETER | 0.482 INCHES MINIMUM AND 0.483 INCHES MAXIMUM |
| BODY OUTSIDE DIAMETER | 0.482 INCHES MINIMUM AND 0.483 INCHES MAXIMUM |
| BODY INSIDE DIAMETER | 0.312 INCHES NOMINAL |
| FLANGE SEAT TO DISK END HEIGHT | 0.120 INCHES NOMINAL |
| UNDER FLANGE HEIGHT | 0.820 INCHES NOMINAL |
| SEATING SURFACE SHAPE | FLAT |