MIL-DTL-2427 Box, Ammunition Packing: Wood, NailedThis specification covers three types and nine classes of basic box designs having two exterior vertical cleats on each end as shown in figure 1. Also, it covers the closing and strapping requirements for filled boxes \(see Appendix A\), and prescribe the criteria to be utilized to determine the serviceability of Government furnished boxes \(see Appendix B\). The box may or may not have hinge and hasp hardware, rope handles and double end construction.

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MIL-DTL-2427H (AR)

3.2.2 Moisture content. The moisture content of the lumber after seasoning, and

prior to the application of preservative treatment shall not be greater than 19 percent nor

less than 12 percent of its oven dry weight as evidenced by the test specified in 4.4.2.

3.2.3 Finish. Lumber shall be cut to length and surfaced on two sides. Edges shall

be straight and square with the surface of the lumber. Unless otherwise specified by the

procuring activity lumber may be surfaced on one side, and resawn on the other side; the

resawn surface shall face to the inside of the box. Resawn lumber must meet specified

thickness requirements.

3.3 Defects standards. The following defects standards shall apply to lumber as

cut to size and assembled in the box.

3.3.1 Season check. Slight season checks occurring in the center portion of a

board in a finished box shall be permitted provided they do not extend through the board

in which they occur. Season checks which extend through the board shall be considered

as splits (3.3.2) except that when adjacent to a knot they will be considered a component

part of incased knot defect (3.3.3.2). Season checks occurring at the end of the board

shall be cause for rejection unless repaired by corrugated fasteners and by additional

nailing in accordance with the procedure outlined for splits.

3.3.2 Splits. (see 6.4). Splits in sides, top and bottom may be repaired as stated

herein. Splits diverting to the edge of a board, or which if extended would diverge to the

edge of a board are not permitted. Splits extending the full length of a board in which the

remaining pieces are at least 1� inches wide on either side of the split are acceptable

provided they are repaired with corrugated fasteners. Splits in which the remaining pieces

are at least 2� inches wide shall be repaired by additional nailing in accordance with the

requirements for individual boards. Splits less than the full length of the board but over

three inches in length which would not diverge to an edge shall be repaired with

corrugated fasteners. Splits in ends of boards as discussed above and caused by nailing

shall be repaired as described. Splits adjacent to the edge of a board caused by nailing

will be permitted if they do not exceed one inch in length and do not terminate in the

edge of the board. Corrugated fasteners used for repair shall be one inch long and as wide

as required to penetrate to within approximately 1/8 inch of the full board thickness. They

shall be centered over the split. They shall be located within 3 inches of the ends of the

split and between 3 and 6 inches apart along the split. Corrugated fasteners shall be

driven flush with the outer surface and shall not project through the inner surface or any

recess cut into the inner surface.

3.3.3 Knots and holes.

a. Sounds, tight knots shall be permitted provided the dimension measured across

the board is not greater than 1/3 the width of the boards in Grade A boxes nor more than

2/3 the width of the board in Grade C boxes. Knots which occur in nailed edges or

underneath hardware, shall be cause for rejection of the boxes if they crack or break out.

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