| Item Name | Seat Valve |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 01-253-4637 (012534637) |
| NCB Code | USA (01) |
| Manufacturer | Parker Hannifin Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A SINGLE THREADED PORTION |
| AASA | THREAD LENGTH | 0.344 INCHES NOMINAL SINGLE THREADED PORTION |
| ABKK | FLANGE DIAMETER | 0.672 INCHES NOMINAL |
| AJRF | FLANGE SEAT TO DISK END HEIGHT | 0.094 INCHES NOMINAL |
| AJRM | UNDER FLANGE HEIGHT | 0.594 INCHES NOMINAL |
| CQFM | HARDNESS RATING | 40.0 ROCKWELL C MINIMUM OVERALL AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| CQJX | NOMINAL THREAD SIZE | 0.500 INCHES SINGLE THREADED PORTION |
| CQKM | SEATING SURFACE SHAPE | FLAT |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.201 INCHES NOMINAL THIRD STEP |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.313 INCHES NOMINAL FIRST STEP |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.316 INCHES NOMINAL SECOND STEP |
| FEAT | SPECIAL FEATURES | 0.375 IN. ACROSS FLATS,0.156 IN. LG HEX WRENCHING FEATURE FLANGE END; FOUR 0.062 IN. DIA HOLES 90 DEG APART DRILLED THRU BODY PERPENDICULAR TO BORE BETWEEN THD PORTION AND FLANGE |
| MATT | MATERIAL | STEEL COMP 4140 OVERALL |
| STYL | STYLE DESIGNATOR | THREADED FLANGED |
| THSD | THREAD SERIES DESIGNATOR | UNF SINGLE THREADED PORTION |
| Components Related to NSN - 4820-01-253-4637, 4820012534637 | ||||
| 4810-01-567-7671 (4810015677671) | 4820-00-811-2684 (4820008112684) | 4820-12-350-7803 (4820123507803) | 4810-01-606-1449 (4810016061449) | |
| 4820-01-235-1424 (4820012351424) | 4820-01-282-2547 (4820012822547) | 4820-00-936-3987 (4820009363987) | 4820-99-471-4151 (4820994714151) | |
| 4820-01-189-0797 (4820011890797) | 4820-01-123-0285 (4820011230285) | 4820-01-501-6459 (4820015016459) | 4810-00-719-6365 (4810007196365) | |
If You’re Ever Looking for NSN parts Or Have an Aircraft On Ground Situation, Don’t forget That We offer Competitive Pricing and Guaranteed On-Time Delivery.
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