| Item Name | Seat Valve |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 01-049-5843 (010495843) |
| NCB Code | USA (01) |
| Manufacturer | Eaton Aerospace Ltd |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABKK | FLANGE DIAMETER | 0.7490 INCHES MINIMUM AND 0.7495 INCHES MAXIMUM |
| ADAR | BODY OUTSIDE DIAMETER | 0.635 INCHES MINIMUM AND 0.638 INCHES MAXIMUM |
| AJRF | FLANGE SEAT TO DISK END HEIGHT | 0.135 INCHES MINIMUM AND 0.139 INCHES MAXIMUM |
| AJRM | UNDER FLANGE HEIGHT | 0.631 INCHES MINIMUM AND 0.635 INCHES MAXIMUM |
| CQFM | HARDNESS RATING | 43.0 ROCKWELL C MINIMUM OVERALL AND 47.0 ROCKWELL C MAXIMUM OVERALL |
| CQKM | SEATING SURFACE SHAPE | FLAT |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.187 INCHES NOMINAL THIRD STEP |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.375 INCHES NOMINAL FIRST STEP |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.390 INCHES MINIMUM SECOND STEP AND 0.410 INCHES MAXIMUM SECOND STEP |
| CRTL | CRITICALITY CODE JUSTIFICATION | ABKK |
| MATT | MATERIAL | STEEL COMP 440C OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | PLAIN FLANGED |
| Relevant Components for NSN - 4820-01-049-5843, 4820010495843 | ||||
| 4820-01-457-8919 (4820014578919) | 4820-00-518-4670 (4820005184670) | 4820-01-087-8164 (4820010878164) | 4820-01-658-8314 (4820016588314) | |
| 4820-01-600-0105 (4820016000105) | 4820-01-221-1573 (4820012211573) | 4820-01-117-0037 (4820011170037) | 4820-01-047-2107 (4820010472107) | |
| 4820-00-818-1047 (4820008181047) | 4820-01-544-0867 (4820015440867) | 4810-00-679-2778 (4810006792778) | 4820-01-115-6756 (4820011156756) | |
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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