MIL-DTL-75K
3.3.2.1 Packaging group 1 and accessories. Electron tubes and accessories, preserved as specified in
3.2, shall be packed in fiberboard containers in accordance with ASTM-D1974 and with ASTM-D5118/
D5118M, weather-resistant class, style optional, special requirements. The requirements for box closure,
waterproofing, and reinforcing shall be in accordance with ASTM-D1974 and with ASTM-D5118/D5118M
for weather-resistant class. Unit containers conforming to ASTM-D1974 and with ASTM-D5118/D5118M,
weather-resistant, special requirements require no further packing provided that the requirements for
closure, waterproofing, and reinforcing specified herein are met.
3.3.2.2 Packaging groups 4, 9, and 23: not exceeding one cubic foot. Unit packs in packaging groups
4, 9, and 23 with a packed volume not exceeding one cubic foot shall be packed as specified for
packaging group 1 (see 3.3.2.1).
3.3.2.3 Packaging groups 4, 9, and 23: exceeding one cubic foot. The military level A unit container
for these packaging groups will suffice as the shipping container. For electron tubes with commercial
preservation, the shipping container shall conform to that specified for the level A unit container in the
applicable packaging group. Closure, waterproofing, and banding (reinforcement requirements) shall be
in accordance with the applicable container specification for level B shipment.
3.3.2.4 Packaging group 24. The unit container for each electron tube unit packed as specified in
3.2.4.5 or 3.2.2 will serve as the shipping container. For electron tubes with commercial preservation, the
shipping container shall conform to that specified for the level B unit container. Closure shall be in
accordance with the applicable container specification for level B. When necessary to facilitate handling,
a skid or pallet base shall be applied in accordance with the applicable box specification, or if not
specified, in a manner which will adequately support the enclosed tube and facilitate the use of material
handling equipment.
3.3.3 Minimal packing.
3.3.3.1 Packaging group 1 and accessories. Packaged electron tubes and accessories shall be
packed in fiberboard containers conforming to ASTM-D1974 and to ASTM-5118/D5118M, domestic, style
optional, special requirements. Closures shall be in accordance with ASTM-D1974 and with ASTM-
D5118/5118M.
3.3.3.2 Packaging groups 4, 9, and 23: not exceeding one cubic foot. Electron tubes in unit containers
specified for packaging groups 4, 9, or 23 with a packed volume not exceeding one cubic foot shall be
packed as specified for packaging group 1 (see 3.3.3.1).
3.3.3.3 Packaging groups 4, 9, and 23: exceeding one cubic foot. The military level A, B unit container
for these packaging groups will suffice as the shipping container. For electron tubes with commercial
preservation, the shipping container shall conform to that specified for the level B unit container in the
applicable packaging group. Closure shall be in accordance with the applicable container specification.
3.3.3.4 Packaging group 24. The unit container will serve as the shipping container. Closure shall be
in accordance with the applicable container specification.
3.3.4 Unitized loads. Unless otherwise specified (see 6.2), unitized loads, commensurate with the
level of packing specified in contract or purchase order, shall be used whenever total quantities for
shipment to one destination equal 40 ft3 (1.1328 m3) or more. Quantities less than 40 ft3 need not be
unitized. Unitized loads shall be uniform in size and quantities to the greatest extent practicable.
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