| Item Name | Retainer Electron Tube |
| Federal Supply Group (FSG) | Electrical and Electronic Equipment Components |
| Federal Supply Class (FSC) | 5960 Electron Tubes and Associated Hardware |
| National Item Identification Number (NIIN) | 00-552-9499 (005529499) |
| NCB Code | USA (00) |
| Manufacturer | Texas Instruments Inc, International General Electric Co, Lockheed Martin Corporation |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| CMS21D | texas instruments inc | retainer electron tube | 57057 | RFQ |
| M7481731P8 | international general electric co | retainer electron tube | 74896 | RFQ |
| M7481731P8 | lockheed martin corporation | retainer electron tube | 99971 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABHP | OVERALL LENGTH | 0.945 INCHES NOMINAL |
| ABKW | OVERALL HEIGHT | 1.875 INCHES NOMINAL |
| ADAV | OVERALL DIAMETER | 0.688 INCHES NOMINAL |
| AEBV | UNTHREADED MOUNTING HOLE DIAMETER | 0.132 INCHES NOMINAL SINGLE MOUNTING FACILITY |
| AGTB | DISTANCE FROM RETAINER CENTER TO CENTERLINE OF MOUNTING FACILITY | 0.469 INCHES NOMINAL |
| AGTM | ACCOMMODATED ITEM SECURING DEVICE TYPE | SPRING CLAMP |
| AGTS | EIA ELECTRON TUBE ENVELOPE ACCOMMODATED | T-5 1/2 |
| AGTT | TUBE ACCOMMODATED MAXIMUM HEIGHT | 1.500 INCHES |
| AGTU | TUBE ENVELOPE ACCOMMODATED MAXIMUM DIAMETER | 0.750 INCHES |
| AXHR | MOUNTING FACILITY TYPE AND QUANTITY | 1 UNTHREADED HOLE SINGLE MOUNTING FACILITY |
| MATT | MATERIAL | STEEL |
| SFTT | SURFACE TREATMENT | CADMIUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 1,CL 1 FED SPEC SINGLE TREATMENT RESPONSE |
| STYL | STYLE DESIGNATOR | HELIX SPRING HOLD DOWN WITH HOOK |
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