MIL-PRF-1/1047D
NOTES:
1.
The total indicated runout of the anode contact surface with respect to the cathode contact surface shall not
exceed .020 (0.51 mm).
2. The total indicated runout of the cathode contact surface with respect to the heater contact surface shall not
exceed .012 (0.30 mm).
3. The total indicated runout of the grid contact surface with respect to the cathode contact surface shall not exceed
.020 (0.51 mm).
4. Measure total indicated runout at the centerline dimension for the applicable contact area. Diameters N, R, T,
and U shall apply throughout the entire contact area as defined by dimensions AA, AB, AC, and AD, respectively.
5. Inner edge of heater and outer edge of cathode rf connection shall be free from burrs and sharp edges.
6. Distortion of fins permissible provided distance between adjacent fins at any point around the circumference
meets dimension K.
7. Silver plate 30 MSI on all external metal surfaces.
8. Radiator and radiator support need not be plated when made of copper, aluminum, or equivalent, approved by
the bureau or agency concerned.
9. Fin at outer end of tube shall have sufficient strength to withstand a drop test from a 6-inch (152.40 mm) height
without distortion as judged by ability to maintain dimension K and not loosening. Test 10 tubes per month. If
one tube fails, test reverts to acceptance level (see note 15) of 6.5 for all lots in process.
10. Do not clamp or locate on this surface.
11. Hole provided for tube extractor through top fin only.
12. Measure anode shank temperature on this surface.
13. These dimensions, and the dimensions in notes 1, 2, 3, and 7, shall be checked during the initial production and
once each succeeding 12-calendar month period in which there is production.
14. Dimensions in electrode contact areas tables are for socket design purposes and are not intended for inspection
purposes.
FIGURE 1. Outline drawing of electron tube type 2C41 - Continued.
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