MIL-DTL-46063H
3.7 Dimensions.
Dimensions shall be as specified in the contract or order
(see 6.2).
3.7.1 Tolerances. Unless otherwise specified in the contract or order (see 6.2),
the plates submitted for acceptance shall not vary from the specified dimensions by an
amount greater than the tolerances shown in ANSI H35.2. Ballistic test plate
tolerances shall be ± l/2 inch.
3.7.1.1 Thickness. Thickness tolerances for production armor and ballistic
test plates shall be as specified in table III.
TABLE III.
Thickness tolerances.
Ordered
Tolerance, inch
Thickness, inches
Minus
Plus 1/
0.500
to
0.625,
incl
0.025
0.626
to
0.875,
incl
.030
0.876
to
1.125,
incl
.035
1.126
to
1.375,
incl
.040
1.376
to
1.625,
incl
.045
1.626
to
1.875,
incl
.052
1.876
to
2.250,
incl
.060
2.251
to
2.750,
incl
.075
2.751
to
3.000,
incl
.090
3.001
to
4.000,
incl
.110
1/ The values for the plus column are derived from the full range of tolerances
specified (for sheet and plate not specified for aerospace applications) in
table 3.1 of ANSI H35.2 less the value shown in the minus column. For example,
the plus tolerance on a 2.0 inch thick by a 73 inches wide plate would be as
follows:
± 0.060"
Thickness tolerance (from ANSI H35.2)
Tolerance value shown in minus column
0.060"
Full tolerance less minus tolerance
0.120" - 0.060" = 0.060"
Derived plus tolerance
0.000"
Tolerances shall be ± 1/2 inch on
3.7.1.2 Ballistic test plate tolerance.
the length and width.
3.8 Marking for identification. Each plate shall be marked with the
manufacturer's name or trade mark, number of this specification, the plate
thickness in inches, the alloy designation, and the lot number or code relating
to the lot number. The height of the characters shall be 3/8 of an inch or
greater. Impression stamping shall not be used, unless permitted by the
procuring activity (see 6.2).
3.8.1 Ballistic test plates. In addition to the marking in 3.8 each
ballistic test plate shall be marked with the letters PRE for first article test
plates and ACC for acceptance test plates. This marking shall be impression
stamped on the rolled surface within a 1/2-inch band at the edge of the test
plate in letters not less than 3/8 inch high. Ballistic retest plates shall be
marked "R1" and R2", respectively (see A.5.2).
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