MIL-PRF-1/665F
NOTES:
1. Dimensions without tolerances are for information only and are not required for inspection purposes.
2.
Applies to dimension A.
3.
Reference plane A is defined as that plane which passes along face of mounting brackets.
4.
Reference plane B is defined as that plane which passes through centers of mounting slots as shown, and
which is perpendicular to plane A.
5.
Reference plane C is defined as that plane which passes through centers of mounting slots as shown, and
which is mutually perpendicular to planes A and B.
6.
Includes angular and lateral dimensions. The `L dimension' line (plane) extends to the Q-diameter surface.
7.
Refers to center line of waveguide.
8.
Parts located on this line may vary from true location by .125 inch (3.175 mm).
9.
Coupling plug, Hanson B3-T20, or equivalent.
10. Common cathode connection.
11. All soldered joints on output sections shall provide hermetic seal.
12. The following surfaces shall be free from paint: Front and rear faces of oil sealing sleeve, parts above
flange, front and rear faces of output flange, exhaust cap, and mounting surfaces of magnets and coolant
plug connectors.
13. Cathode stem temperature measured at this point.
14. Anode temperature shall be measured at right side (facing output) of output transformer by inserting
thermocouple plug as shown on figure 2.
15. Equipment flanges shall mate with oil sealing flange and output flange by means of flexible union. Oil
sealing flange and output flange shall not be used to support tube. Entire weight of tube shall be supported
by magnet mounting brackets.
16. These surfaces shall be coplanar within .032 inch (0.81 mm). This feature shall be inspected on a
qualification basis.
17. Paint with heat resistant, non-corrosive paint.
18. Parts located on this line may vary from true location by .188 inch (4.78 mm).
19. Magnet may be of two-piece or four-piece construction.
20. Protective shipping covers shall be provided.
FIGURE 1. Outline drawing of electron tube type 6410A - Continued.
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