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)

b. Knot holes, loose knots or worm holes larger than � inch across the largest

dimension shall be cause for rejection unless repaired in accordance with 3.3.3.1. Small

holes less than 1/16 inch in diameter shall be permitted in any board provided no

concentration of such holes exceeds five in any square inch of surface in Grade A boxes.

Individual knot holes, loose knots or worm holes, ranging in size from 1/16 inch to �

inch across the largest dimension, shall be permitted provided they are spaced not less

than 12 inches apart in Grade A boxes or three inches in Grade C boxes.

c. A knot extending through the thickness of the board which is encased

(separated for more than � of the circumference from the surrounding wood by hard

pitch or checks) shall be considered a loose knot. If a portion of a knot has been removed

from an edge of a board in manufacture, the basis for judging the knot for encasement

shall be � the remaining circumference. Season checks extending through the thickness

of the wood and so placed as to cause breaking out of a portion of a knot which would

result in a hole larger than � inch across the largest dimension, shall be cause for

rejection.

3.3.3.1 Repair of holes and knots. Holes and loose knots may be repaired with

solid wooden plugs or plywood disks, except that the application of a nail, screw, or

corrugated fastener in a plug or disk utilized in a finished box shall be cause for rejection.

Plywood utilized in disks shall comply with A-A-55057, Type A or C. The plugs shall be

a snug fit and disks shall be from a snug fit to 1/64 inch maximum clearance. Plugs shall

be of the same thickness as the board in which inserted. Counterbores for disks shall be

drilled only to a depth necessary to accommodate the thickness of the disk. Plugs and

disks shall be glued on all butting surfaces with glue conforming with ASTM D 4689,

Class B. Holes plugged with a solid plug of the same thickness as the board shall be

cause for rejection if the plug diameter measures more than 1� inches, or if the diameter

is greater than half the width of the board. Plywood disks which partially extend through

the thickness of the board shall be cause for rejection if any of the following conditions

given exist:

a. The knot covered, measures more than two inches across its greater diameter

b. The diameter of the disks exceeds 2� inches.

c. The disk has a bearing on solid wood of less than 1/8 inch at any point on its

circumference.

d. The disk thickness is less than � inch or more than one half the thickness of the

board.

Note: Holes or loose knots may be considered plugged if covered by a cleat,

providing that any portion not covered measures no more than 5/8 inch in any direction.

If a nail in the cleat enters such a hole or knot, the box shall be rejected unless corrected

by additional nailing. As an alternate material to the plywood for the manufacture of

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