MIL-DTL-83361B
5.00 MAX
1.25 MIN
1.995 DIA
1.940 DIA MAX
1.812 DIA
2.005
1.843
1.995
1.940 DIA
Case details per MS33639
MS33678 Connector located on
for nominal 2 inch size
centerline. Master key at top to
mate with MS3126P12-10S
FIGURE 1. Outline dimensions.
3.3.1.1 Cap. A separate nonhermetically sealed cap may be used on the back of the case
for installing the electrical receptacle. The cap shall be made of nonferrous, low-density metal.
3.3.1.2 Case-to-coverglass distance. The distance between the outer surface of the
coverglass and the front edge of the case shall be the minimum practicable and shall not exceed
0.031 inch.
3.3.1.3 Filling medium. The filling medium shall be at least 98 percent pure and shall be
free of dust particles. The filling medium shall contain no more than 0.006 milligram of water
per liter (-85 °F (-65 ºC) dew point) at the filling pressure. The filling medium shall be 88
percent to 92 percent nitrogen and the remainder helium. The absolute pressure of the filling
medium in the case shall be 12 pounds per square inch (psi) to 14.7 psi. Other concentrations of
filling medium shall not be used unless prior approval from the procuring activity is obtained.
3.3.2 Lighting. The indicator shall be integrally lighted in accordance with
MIL-L-27160 and shall meet all requirements specified herein.
3.3.2.1 Prime standard. A prime standard shall be provided by the supplier which shall
be either an indicator conforming to this specification or a lighted model. The prime standard
lighting shall conform to MIL-L-27160. The design, color, quality of lighting, and calibration
shall be subject to the approval of the procuring activity.
3.3.3 Pointers. Pointers shall conform to figure 2 and shall be suitable for integral
lighting. The thickness of the pointers shall not be less than 0.01 inch.
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