MIL-DTL-46789D(AT)
3.5 Interface requirements. The assembly shall conform to the interface envelope
dimensions, mounting and electrical interfaces in the applicable drawing (see 4.7).
3.6 Support and ownership requirements. The assembly shall possess the following life
cycle ownership characteristics (see 4.8).
3.6.1 Safety. The assembly shall pose no hazards, physically or electrically to personnel
operating the blasting machine (see 4.8.1).
3.6.2 Identification marking. The assembly shall prominently display at least, the item s
name, manufacturer s name or trademark, manufacturer s part number, cage code serial number
and PIN (military part identification number) on the outer surface, in permanent, easily visible,
straight simple letters and numbers (see 4.8.2).
3.7 Operating environment requirements. Each assembly shall operate under the
following environmental conditions, without degradation in performance.
3.7.1 Waterproofness. The assembly shall be capable of withstanding 41 kilopascals
(kPa) differential while submerged in water (see 4.9.1).
3.7.2 Sand and dust resistance. The assembly shall be capable of withstanding blowing
sand and dust at a velocity of 762 ±152 meters per minute (m/min) (see 4.9.2).
3.7.3 Fungus. The assembly shall be capable of withstanding a fungus environment at
93 to 100% relative humidity (see 4.9.3).
3.7.4 Shock. The assembly shall be capable withstanding a sawtooth wave shock pulse
of 75 gravity units (g) (see 4.9.4).
3.7.5 Corrosion resistance. The assembly shall be capable of withstanding a 5% salt
solution spray (see 4.9.5).
3.7.6 Vibration. The assembly shall be capable of withstanding the severe vibration
profile as specified in figure 2 with sweep times of 16 min/cycle and the total cycling time per
axis shall be two hours in each of the three mutually perpendicular axes (see 4.9.6).
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