MIL-DTL-75K
3.1.3.2 Wrapping and cushioning. Wrapping and cushioning materials shall be non-corrosive and dry.
The use of hygroscopic or loose fill materials is prohibited for shipboard applications.
3.1.3.3 Blocking and bracing. Blocking and bracing shall conform to best manufacturing practices.
3.1.4 Design and construction. Interior and exterior packs shall be of the design and construction
specified herein. Exterior containers shall be of minimum tare and cube consistent with the protection
required and shall contain equal quantities of identical stock numbered or otherwise designated items to
the greatest extent practicable.
3.1.5 Army acquisitions.
3.1.5.1 Military unit pack quantities. Unless otherwise specified (see 6.2), the quantity per unit pack
(QUP) shall be one. Unit and supplementary containers conforming to ASTM-D5118/D5118M shall be
utilized in lieu of PPP-B-566 or PPP-B-676 containers.
3.1.5.2 Military intermediate packs. Electron tubes, unit packed in containers less than 64 cubic inches
and bearing the same NSN, shall be placed in intermediate containers conforming to ASTM-D5118/
D5118M weather resistant class. Commercial (minimal) intermediate containers shall conform to ASTM-
D5118/D5118M domestic class. Intermediate containers shall not exceed 40 pounds (18.144 kilograms)
net weight, or a maximum size of 1.5 cubic feet (0.04248 cubic meter) with at least two dimensions not
exceeding 16 inches (40.64 centimeters). Intermediate containers shall not be required when the total
quantity to be shipped will result in only one intermediate pack per shipping container.
3.1.5.3 Packing. For wood containers conforming to ASTM-D6251/D6251M, when the gross weight
exceeds 200 pounds (90.72 kilograms), or the container length and width is 48 x 24 inches (121.92 x
60.96 centimeters) or more and the weight exceeds 100 pounds (45.36 kilograms), 3 x 4 inch (7.62 x
10.16 centimeters) skids (laid flat) shall be applied in accordance with the requirements of the container
specification. Palletization shall be required when containers specified in 3.3.1, 3.3.2, and 3.3.3 do not
require skids; quantities per destination exceed either a total of 250 pounds or 113.4 kilograms (excluding
the pallet) or a volume of 20 cubic feet (0.05663 cubic meter); and the container size permits use of one
of the pallet patterns. A quantity of containers, packed as specified, except that container strapping may
be omitted, must be placed on a pallet, load type I. For level B and commercial (minimal) packaging, unit
or intermediate containers which meet these requirements may be palletized without further packing. The
pallet shall conform to NN-P-71, type IV, group I or II woods. The load shall be "bonded" to the pallet by
strapping conforming to ASTM-D3953, or shrink film conforming to Commercial Item Description A-A-
3174. Stretch wrap is authorized for shipments within the continental United States and for containerized
shipments.
3.2 Military preservation.
3.2.1 Cleaning. Electron tubes and accessories shall be cleaned in accordance with MIL-STD-2073-1,
5.2.1 and cleaning inspection provisions as cited within MIL-STD-2073-1, table G.1.
3.2.2 Drying. Electron tubes and accessories shall be dried in accordance with MIL-STD-2073-1.
3.2.3 Preservatives. Contact preservatives shall not be used.
3.2.4 Unit packs.
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