container\) semitrailer, M871A2, for use in ammunition transport, breakbulk, and 20 feet \(ft\) and smaller containers while being towed by a tractor.

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MIL-PRF-62272C(AT)

3.2.5.2 Corrosion protection. The vehicle shall be fabricated from compatible materials

providing corrosion protection and coating adherence equal to or exceeding that provided by hot

dip galvanized 1010 steel with a minimum coating thickness of 2 mils (50 micrometers) on steel

sheet less than 0.0625 in. (1.6 mm) thick, 2.5 mils (64 micrometers) on steel sheet greater than

0.0625 in. thick, or 0.75 mil (19 micrometers) on pregalvanized steel sheet 0.0625 in. thick or

less. A material sample shall be capable of meeting or exceeding the corrosion resistance

provided by a galvanized sample (as described above) when subjected to the Mandrel Bend Test

of ASTM D522, and followed by the Accelerated Corrosion Test of GM 9540P, Method B,

120 cycles (see 4.5.1).

3.2.5.3 Prohibited materials. Asbestos, cadmium, and radioactive materials shall not be

used in this item. Radioactive material is defined by title 10, CFR, part 40, and material in which

the radioactivity is greater than 0.002 microcuries per gram or 0.01 microcuries total activity for

the item (see 4.5.1).

3.3 Design and construction. The semitrailer shall be of the heavy duty commercial

container transporter type, modified as necessary to accommodate all containers, and breakbulk

cargo, capabilities specified herein. Except as specified herein, vehicle components, assemblies

and accessories to be delivered under contract shall be manufacturer's standard or optional items

which meet or exceed the requirements of this specification. The vehicle shall be a standard

commercial vehicle, of a model sold to a significant number of buyers other than the Government,

in the course of normal business operations. The model furnished shall be not older than the

manufacturer's current model on the date of invitation for bids. The automotive vehicles,

components, assemblies and accessories to be procured hereunder shall conform to all Federal

Motor Vehicle Safety Standard (FMVSS) applicable on the date of manufacture to non-military,

non-export semitrailer products, except as otherwise specified herein.

3.3.1 Dimensions and clearances. The semitrailer, without payload, uncoupled from the

towing vehicle, shall conform to the dimensions specified in table III. The semitrailer shall not

exceed the Passe-Partout International (PPI) clearance dimensions as shown in figure 1

(see 4.5.2).

3.3.2 Upper fifth wheel plate. The upper fifth wheel plate shall be adequate for coupling

to a full oscillating military fifth wheel, and the fore and aft rocking commercial fifth wheel. It

shall be of sufficient size to cover a fifth wheel 36 in. (91.4 cm) in diameter (see 4.5.2).

3.3.2.1 Kingpin. The upper fifth wheel kingpin shall be 2 in. (5 cm) and shall conform to

SAE J700 (see 4.5.2).

3.3.3 Maintenance characteristics. The semitrailer design, together with components and

accessories shall permit ready access to all items requiring periodic services or maintenance in the

field. Periodic service and maintenance shall be accomplished with the use of conventional,