NSN 4820-01-256-9873
Part Details | VALVE SEAT
4820-01-256-9873 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: 80343845364XXX13(SPCLN), 803-4384536-4XXX-13(SPCLN), 4820-01-256-9873, 01-256-9873, 4820012569873, 012569873
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 48 | JUN 10, 1987 | 01-256-9873 | 22113 ( SEAT, VALVE ) |
REFERENCE DRAWINGS & PICTURES
THREADED FLANGED
Cross Reference | NSN 4820-01-256-9873
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 803-4384536-4XXX-13(SPCLN) | 80064 | NAVAL SHIP SYSTEMS COMMAND |
Technical Data | NSN 4820-01-256-9873
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | THREADED FLANGED |
| FLANGE DIAMETER | 1.104 INCHES MINIMUM AND 1.114 INCHES MAXIMUM |
| BODY INSIDE DIAMETER | 1.105 INCHES MINIMUM AND 1.113 INCHES MAXIMUM |
| FLANGE SEAT TO DISK END HEIGHT | 0.229 INCHES MINIMUM AND 0.239 INCHES MAXIMUM |
| UNDER FLANGE HEIGHT | 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM |
| SEATING SURFACE SHAPE | ANGULAR |
| SEAT ANGLE IN DEG | 45.000 NOMINAL |
| SEAL ACCOMMODATION TYPE | GROOVED |
| SPECIAL FEATURES | INSPECTION PER MIL-I-45208; SHIPMENT AND STORAGE PER MIL-STD-129; CLEAN PER MIL-STD-767 |
| REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| CRITICALITY CODE JUSTIFICATION | ZZZY |