MIL-PRF-11021H
such that the switch eventually returns to normal operation, shall be recognized as a failure and
shall be cause for rejection.
3.5. Environmental and physical.
3.5.1 Waterproofness. The switch assembly shall be waterproofed (see 4.7.1).
3.5.2 Corrosion. The switch assembly shall resist corrosion (see 4.7.2).
3.5.3 Fungus. The switch shall resist fungus and microbial growth on the exterior and
interior surfaces (see 4.7.3).
3.5.4 Drop test. The switch assembly shall withstand the drop test (see 4.7.4).
3.5.5 Thermal shock. The switch assembly shall withstand thermal shock (see 4.7.5).
3.5.6 Water jet spray. The switch assembly shall withstand water jet spray (see 4.7.6).
3.5.7 Vibration. When subjected to the vibration test as specified in 4.6.3, the current
specified in TABLE III, tested at each switch position, shall not deviate from the set current by
more than 5% for periods greater than 0.01 second. Subsequent to vibration testing, the switch
assembly shall show no evidence of bending, cracking or other physical damage and shall meet
the requirements for 3.5.1 (see 4.7.7).
3.5.8 Shock. The switch assembly and switch levers, after being subjected to the shock
test, shall show no evidence of bending, cracking, or other physical damage and the switch levers
shall not be displaced more than 3 degrees. During shock testing, the terminal currents shall
meet the requirements of 3.5.7 (see 4.6.4 through 4.7.8).
3.6 Protective finishes. All frontal exterior metal surfaces shall be painted with CARC
paint. The index marks and their identification shall be base metal or white. Surfaces shall be
cleaned, conditioned, primed and painted in accordance with Drawing 12369007. The color of
paint shall be green #383 (see 4.5.2).
3.7 Marking. Identification and switch function markings shall be in accordance with
SAE AS478 or MIL-STD-130. The switch assembly shall be marked with the part number
MS51113-1. At the manufacturer's option, the information may be cast as an integral part of the
switch, clearly and legibly, in a visible location and shall include the following information
(see 4.5.2).
a.
National stock number (NSN).
b.
Serial number.
c.
Manufacturer's name or identification code (CAGE).
d.
Contractor or order number.
e.
Date of manufacture.
f.
Lot number.
g.
Part number.
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