MIL-PRF-24236/15J
Inches
mm
Inches
mm
.
002
0.05
.635
16.13
.003
0.08
1.000
25.40
.005
0.13
1.250
31.75
.030
0.76
1.437
36.50
.056
1.42
1.578
40.08
.221
5.61
3.500
88.90
.625
15.88
5.125
130.18
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for general information only.
3. Unless otherwise specified tolerances are .016 (0.41 mm).
4. The shell and flange must be perpendicular within 1 degree. Deviation from concentricity of the stud
and shell shall not exceed .062 (1.57 mm).
5. This switch shall utilize a ground return through the mounting flange. The circuit between the stud and
the flange shall close on increasing temperature.
6. The mounting flange forms an integral part of the switch housing.
7. A locking feature shall be incorporated to prevent inadvertent changing of the adjustable screw. Both
the adjusting screw and the locking feature shall be protected with a metal cover, wired in place as
shown, in such a manner that removal of this protective cover is required to permit readjustment.
Removal and replacement of the cover shall not easily be accomplished without the use of some
device considered a tool.
8. The adjustable feature is provided for maintenance to maintain marked set point within the setting
tolerance of table 1.
9. The temperature setting shall be marked on the seal cap.
10. An insulated torque shall be used with switches having a temperature setting to 750 degrees
Fahrenheit. Above 750 degrees Fahrenheit use MS20500 nut - silver plated.
FIGURE 1. Configuration and dimensions - Continued.
REQUIREMENTS:
Dimensions and configuration: See figure 1.
Enclosure design: All entrances to the switch cavity except through the actuator bushing shall be sealed
by fusion of glass-to-metal, metal-to-metal, or ceramic-to-metal.
Class: Class 4, except vibration of 10 g's.
Ambient temperature range: -65F to 1,000F.
Operating temperature: See table I.
Temperature adjustment: The threaded temperature adjusting screw (see figure 1) shall be so designed and
constructed that the operating temperature can be easily adjusted over the range 135F to 900F, without the use
of special tools. One revolution of the mechanism shall not change the operating temperature by more than
370F.
Delivery temperature: Prior to delivery, switches shall be adjusted to operate at the applicable operating
temperature.
Temperature markings: The operating temperature setting of the switch shall be durably and legibly marked as
shown on figure 1.
2
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