extent practicable, provided the item produced meets all other requirements of this specification. Used,
rebuilt or remanufactured components, pieces and parts shall not be incorporated in the item.
3.5 Environmental requirements. The mounting kit shall conform to the following environmental
3.5.1 Operating temperatures. The mounting kit shall perform in any ambient temperature from -25 to
3.5.2 Storage temperature. The mounting kit shall perform after exposure to an ambient temperature
from -60 F to +160 F.
3.6 Safety. Nonfunctional sharp edges, projecting points, and excessive length of fastening devices
shall be avoided.
3.7 Human factors engineering. The mounting kit shall conform to human factors engineering design
criteria as described in MIL-STD-1472. Special design emphasis shall be given, but not limited to
paragraphs 4 (General Requirements), 5.5 (Labeling), 5.6 (Anthropometry), 5.9 (Design for
Maintainability), and 5.13 (Hazards and Safety) of MIL-STD-1472, as applicable.
3.8 Interchangeability. All parts having the same part number shall be functionally and dimensionally
interchangeable. Interchangeable parts are defined as two or more like parts possessing such functional
and physical characteristics as to be equivalent in performance and durability and capable of being
exchanged one for the other without alteration of the parts themselves or of adjoining parts and without
selection for fit or performance.
3.9 Treatment and painting.
3.9.1 External. Normally painted surfaces, externally located on the tank, shall be cleaned and treated
in accordance with TT-C-490, type I or II. Prime per MIL-P-52192, MIL-P-53030 or MIL-P-53022.
Primer shall have a dry film thickness of 1.0-1.5 mils. The painted surfaces shall be color green 383
conforming to MIL-G-46168 applied in two coats at least 1.8 mils thick (total) without sags, runs or thin
areas. The kit shall then be overcoated in accordance with the Government furnished camouflage patterns
with MIL-C-46168 top coat of the colors specified in the camouflage patterns.
3.9.2 Internal. The normally painted portions of the kit, internally located on the tank, shall be cleaned
and treated in accordance with TT-C-490, type I or II. Prime per MIL-P-52192, MIL-P-53020 or
MIL-P-53022. Primer shall have a dry film thickness of 1.0 - 1.5 mils. The final painted surfaces shall be
color 17925 white applied in two coats at least 1.8 mils thick (total) without sags, runs or thin areas and
shall conform to MIL-C-22750.
3.10.1 Lifting provisions. The mounting kit shall have lifting eyes in accordance with drawing
TA13227E7180 to allow its installation onto the tank by the tank crew with the help of a wrecker, tank
recovery vehicle or any appropriate vehicle organic to the tank unit.