MIL-DTL-28786C
3.2.1.4.2.3 Other accessories. Other accessories such as caps, filters, lenses, and panel seals shall be unit
packed in accordance with method 10. Unit pack quantities for other than one each shall be as specified (see 6.2).
3.2.1.4.3 Supplementary containers. Each switch, unit packed in a bag or envelope as specified in 3.2.1.4.1, with a
unit pack volume exceeding 15 cubic inches (246 cubic centimeters) shall be placed in a supplementary container
conforming to either PPP-B-566 or PPP-B-676.
3.2.1.5 Intermediate packs. When the unit pack is a bag of any type or the unit pack is less than 64 cubic inches
(1,049 cubic centimeters), uniform quantities of switches or accessories of the same NSN shall be placed in
intermediate containers conforming to variety 2 of either PPP-B-556 or PPP-B-676; or ASTM-D5118. Intermediate
containers shall contain multiples of five unit packs not to exceed 100 unit packs. No intermediate packs are required
when the total quantity shipped to a single destination will result in only one intermediate pack per shipping container.
3.2.2 Commercial. Commercial preservation of switches and accessories shall conform to ASTM-D3951
requirements for this level. Unless otherwise specified in the contract (see 6.2), the quantity per unit pack shall be at
the option of the contractor.
3.3 Packing. Packing shall be level A, B, or Minimal, as specified (see 3.1 and 6.2).
3.3.1 Level A. Switches and accessories, preserved as specified in 3.2, shall be packed in wood containers
conforming to ASTM-D6251, overseas type. Closure and strapping shall be in accordance with the applicable
container specification except that metal strapping shall conform to ASTM-D3953-87, type I, finish A. The
requirements for level B packing shall be used when the total quantity of a stock numbered switch or accessory for a
single destination does not exceed a packed volume of one cubic foot (0.02832 cubic meter).
3.3.2 Level B. Switches and accessories, preserved as specified in 3.2, shall be packed in fiberboard containers
conforming to ASTM-D5118, class weather resistant, style optional, special requirements. The requirements for box
closure, waterproofing, and reinforcing shall be in accordance with ASTM-D1974.
3.3.3 Minimal. Switches and accessories, preserved as specified in 3.2, shall be packed in fiberboard containers
conforming to ASTM-D5118, class domestic, style optional. Closures shall be in accordance with ASTM-D1974.
3.3.4 Unitized loads. Unitized loads, commensurate with the level of packing specified in the contract or purchase
order, shall be used whenever total quantities for shipment to one destination equal 40 cubic feet (1.1328 cubic
meters) or more. Quantities less than 40 cubic feet need not be unitized. Unitized loads shall be uniform in size and
quantities to the greatest extent practicable.
3.3.4.1 Level A. Switches and accessories, packed as specified in 3.3.1, shall be unitized on pallets in
conformance with MIL-HDBK-774, load type I, with a wood cap (storage aid, 5) positioned over each load.
3.3.4.2 Level B. Switches and accessories packed as specified in 3.3.2, shall be unitized on pallets in
conformance with MIL-HDBK-774, load type I, with a weather resistant fiberboard cap (storage aid 4) positioned over
each load.
3.3.4.3 Minimal. Switches and accessories, packed as specified in 3.3.3, shall be unitized as specified in 3.3.4.2
except that the fiberboard caps shall be class domestic.
3.4 Marking. The following marking is mandatory for shipments both to U.S. Government activities.
3.4.1 Standard marking. In addition to any special or other identification marking required by the contract (see 6.2),
each unit, supplementary, intermediate, and exterior container and unitized load shall be marked in accordance with
MIL-STD-129. When specified in the contract (see 6.2), the marking of domestic shipments for civil agencies shall be
in accordance with FED-STD-123.
3.5 First article and quality conformance inspections. First article and conformance inspections and tests shall be
required as specified in 4.3, 4.4 and 4.5, respectively. Samples for these tests shall be furnished in accordance with
the procedures outlined in 4.4 and 4.5. The performance of the visual and dimensional inspections, rough handling
tests, and leakage tests shall conform to the inspections and test outlined in 4.5.1, 4.5.2.1, and 4.5.2.2, respectively.
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