MIL-PRF-8805/40K
Dielectric withstanding voltage:
At atmospheric pressure: 1,000 V rms.
At reduced barometric pressure: 50,000 feet; 400 V rms.
Following electrical endurance: Points of application between all unconnected terminals of the
sample pole - not applicable.
Mechanical endurance: 25,000 cycles.
Electrical endurance: 25,000 cycles.
Electrical ratings: See table II.
Fluid resistance: Except for the cut end of the lead wire, switches shall be submerged in each of the
following fluids for 2 minutes to 2 minutes 30 seconds, which shall consist of one cycle (one cycle is 10
minutes to 12 minutes 30 seconds total). Each switch shall be subjected to three cycles.
a. Turbine fuel (MIL-DTL-5624).
b. Hydraulic fluid (SAE AS1241).
c. Coolanol (NSN 9160-00-257-1298).
d. Ethylene glycol (ASTM E-1119).
e. Lubricating oil (MIL-PRF-7808).
After each immersion, the excess fluid shall be blown off the external surfaces of the switch with an air
jet. Following the third cycle, the switch shall be subjected to and shall meet the requirements for
dielectric withstanding voltage, insulation resistance, operating characteristics, and seal tests.
Part number: See table I.
Qualification inspection:
Group submission: See table III.
Group A inspection:
Seal test: Only watertight test shall be performed.
TABLE I. Part number and characteristics.
Diameter maximum
Lead wires
Part number
A
B
Size
No. Req'd
MS24331-1
1.015 (25.78)
.980 (24.89)
No. 20
6
MS24331-2 1/ 1.515 (38.48) 1.500 (38.10)
No. 18
6
MS24331-3
1.515 (38.48) 1.310 (33.27)
No. 18
4
MS24331-4
1.515 (38.48) 1.700 (43.18)
No. 18
8
MS24331-6
1.015 (25.78) 1.000 (25.40)
No. 18
6
1/ Inactive for new design.
Note: MS24331-1, MS24331-2, MS24331-3, MS24331-4, and MS24331-6 were
superseded by MIL-PRF-8805/40; the MS24331 Part Numbers (PINS)
were retained.
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