| Item Name | Seat Valve |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-359-4537 (003594537) |
| NCB Code | USA (00) |
| Manufacturer | David Brown Hydraulics Inc, Nacco Materials Handling Group Inc, Deere And Company |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABKK | FLANGE DIAMETER | 1.002 INCHES NOMINAL |
| ADAR | BODY OUTSIDE DIAMETER | 0.938 INCHES NOMINAL |
| ADAS | BODY INSIDE DIAMETER | 0.625 INCHES MINIMUM AND 0.719 INCHES MAXIMUM |
| AJFZ | SEAT RADIUS | 0.031 INCHES NOMINAL |
| AJRF | FLANGE SEAT TO DISK END HEIGHT | 0.812 INCHES NOMINAL |
| AJRM | UNDER FLANGE HEIGHT | 1.688 INCHES NOMINAL |
| AJSH | SEAL ACCOMMODATION TYPE | RECESSED |
| CQFM | HARDNESS RATING | 76.0 ROCKWELL A MINIMUM OVERALL AND 78.5 ROCKWELL A MAXIMUM OVERALL |
| CQKM | SEATING SURFACE SHAPE | RADIAL |
| FEAT | SPECIAL FEATURES | DRILL 0.500 IN. DIA HOLES 0.375 IN. DEEP AT 120 DEGREES 1.062 IN. FROM FLANGE HAS 0.312 IN. W BY 0.127 IN. DEEP GROOVE AROUND 0.125 IN. FROM TOP |
| MATT | MATERIAL | STEEL OVERALL |
| STYL | STYLE DESIGNATOR | PLAIN FLANGED |
| Components Related to NSN - 4820-00-359-4537, 4820003594537 | ||||
| 4820-01-661-4388 (4820016614388) | 4820-01-145-6678 (4820011456678) | 4820-01-039-1836 (4820010391836) | 4820-01-386-1744 (4820013861744) | |
| 4810-01-271-8772 (4810012718772) | 4820-00-999-3603 (4820009993603) | 4820-01-212-9959 (4820012129959) | 4820-01-294-4352 (4820012944352) | |
| 4820-01-377-3064 (4820013773064) | 4820-01-394-1344 (4820013941344) | 4820-01-268-9843 (4820012689843) | 4820-01-500-8093 (4820015008093) | |
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