MIL-STD-1660 Ammunition Unit LoadsThis standard establishes minimum design criteria and associated tests for ammunition unit loads.

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MIL-STD-1660A

PARAGRAPH                                                                                                                                                             PAGE

4.4  Shape.................................................................................................................................................................6

4.4.1  Protrusions................................................................................................................................................6

4.4.2  Item placement .........................................................................................................................................6

4.4.3  Strapping placement.................................................................................................................................6

4.4.4  Item orientation ........................................................................................................................................6

4.4.5  Drainage ...................................................................................................................................................7

4.5  Size and weight.................................................................................................................................................7

4.5.1  Length and width......................................................................................................................................7

4.5.1.1  Overhang .........................................................................................................................................9

4.5.1.2  Underhang .......................................................................................................................................9

4.5.2  Transportability limitations ......................................................................................................................9

4.5.3  Gross weight.............................................................................................................................................9

4.5.4  High density ammunition .........................................................................................................................9

4.5.5  Special rule for amphibious assault ammunition......................................................................................9

4.6  Stability.............................................................................................................................................................9

4.7  Stacking capability............................................................................................................................................9

4.8  Materials ...........................................................................................................................................................9

4.8.1  Strapping ..................................................................................................................................................9

4.8.2  Strapping seals .........................................................................................................................................9

4.8.3  Pallets.....................................................................................................................................................10

4.8.4  Nails .......................................................................................................................................................10

4.8.5  Staples ....................................................................................................................................................10

4.8.6  Edge protectors.......................................................................................................................................10

4.8.7  Wood members ......................................................................................................................................10

4.8.8  Plywood .................................................................................................................................................10

4.9  Markings .........................................................................................................................................................10

4.10  FIULs (Navy), tactical (Army) .....................................................................................................................10

4.10.1  Sling compatibility ...............................................................................................................................10

4.11  Protection levels............................................................................................................................................11

4.11.1  Level A - tactical (Army), FIUL (Navy) .............................................................................................11

4.11.2  Level B - intermediate (Army), domestic (Navy)................................................................................11

4.11.3  Level C - minimum (Army).................................................................................................................12

5.  DETAILED REQUIREMENTS.............................................................................................................................12

5.1  General............................................................................................................................................................12

5.2  Satisfactory performance criteria ....................................................................................................................12

5.3  Test procedures ...............................................................................................................................................12

5.4  Test temperature..............................................................................................................................................12

5.4.1  Stacking test ...........................................................................................................................................12

5.4.1.1  Stacking test rationale....................................................................................................................12

5.4.2  Repetitive shock test...............................................................................................................................12

5.4.2.1  Repetitive shock test (superimposed load) ....................................................................................12

5.4.2.2  Repetitive shock test rationale.......................................................................................................13

5.4.3  Drop test.................................................................................................................................................13

5.4.3.1  Edgewise-drop (rotational) test......................................................................................................13

5.4.3.2  Cornerwise-drop (rotational) test...................................................................................................13

5.4.3.3  Drop test rationale .........................................................................................................................13

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