MIL-DTL-6070C
American Trucking Associations, Inc.
National Motor Freight Classification Rules
(Application for copies should be addressed to the American Trucking Association, Inc. 1616 "P"
Street, N.W., Washington DC 20036.)
Uniform Classification Committee.
Uniform Freight Classification Rules
(Application for copies should be addressed to the Uniform Classification Committee, 202 Union
Station, 516 W. Jackson Blvd., Chicago IL 60606.)
2.3 Order of precedence. In the event of a conflict between the text of this document and the references
cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes
applicable laws and regulations unless a specific exemption has been obtained.
3. REQUIREMENTS
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3.1 Species of Wood. The species of wood given by Table I and as specified (see 6.2) in the contract
shall be used in aircraft flat panel plywood construction.
3.1.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or
environmentally preferable materials should be used to the maximum extent possible provided that the
material meets or exceeds the operational and maintenance requirements, and promotes economically
advantageous life cycle costs.
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3.2 Adhesives. The adhesives used in the manufacture of the plywood shall be of the thermosetting,
phenol formaldehyde, melamine formaldehyde, or resorcinol formaldehyde types conforming to MMM-A-
181. Application of these adhesives shall be accomplished in hot plate presses to produce joints of
uniform quality. Thermosetting Type I emulsion polymer isocyanate adhesives are also acceptable;
application of these adhesives can be accomplished in either hot or cold presses (in accordance with the
manufacturer's recommendations) to produce joints of uniform quality.
3.3 Veneer. The veneer may be rotary cut, sliced, or sawed except as otherwise specified in Table I.
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3.3.1 Thickness of veneer. Thickness of veneer shall be within the tolerances shown in Table II. These
thickness' and tolerance apply when the veneer has a moisture content of 8 to 12 percent, inclusive.
3.3.2 Specific gravity. Average specific gravity of all samples from any one crate, stack, flitch, or bolt
shall not be less than the minimum specified in Table I, and the average specific gravity of any one sheet
of veneer shall not be less than the minimum specified in Table I.
3.4 Defects.
3.4.1 Veneer Defects. Veneer containing the following defects is not acceptable:
a. Brash Wood
b. Pronounced Compression Wood (Present in coniferous species only)
c. Shakes
d. Compression Failure
e. Patching in any form
f. Dote or any other form of decay (mineral streaks, stains, and colorations shall not be considered as
defects unless associated with decay).
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