MIL-PRF-1/1047D
TABLE I. Requirement or test - Continued.
11/ This test shall be performed during the initial production and once each succeeding 12-calendar month period in which there is
production.
12/ Torque test shall be performed as follows:
(a)
The tube shall be held securely at the cathode connection. A force of 5 pounds shall be applied to the heater cup without
perceptible shock. This test may be made by applying the force at right angles to the inside of the cup at a point .109
(2.77 mm) ±.016 inch (0.41 mm) from the cathode end of the tube. An approved equivalent method may be used. The
heater cup shall not loosen or short circuit on the cathode connection. This part of the test shall not be required if the
space between the heater cup and the cathode sleeve is completely filled with insulating material.
(b)
A torque of 15 inch-pounds shall be applied between anode and cathode without shock.
13/ Test in jig in accordance with Drawing 159-JAN.
Referenced documents. In addition to MIL-PRF-1, this document references MIL-STD-1311, 158-JAN, 159-JAN, 255-JAN, 277-
JAN, 278-JAN, 279-JAN, and 283-JAN.
The margins of this specification are marked with vertical lines to indicate where changes from the previous issue were made. This
was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations.
Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the
marginal notations and relationship to the last previous issue.
Custodians:
Preparing activity:
Army - CR
DLA - CC
Navy - EC
Air Force - 85
(Project 5960-2013-007)
DLA - CC
Review activities:
Army - MI
Navy - AS, CG, MC, OS
Air Force - 19, 99
NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and
responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at
8
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