MIL-DTL-12560K (MR)
APPENDIX A
TABLE A-II. Minimum required ballistic limits (protection criteria) for class 1 and 3 armor and
the upper ballistic limits for class 3 armor; firing obliquity: 0°, projectile: caliber .30 M2 AP.
BL(P), ft/sec
BL(P), ft/sec
BL(P), ft/sec
Thickness,
Thickness,
Thickness,
CLASS
CLASS
CLASS
inches
inches
inches
3
3
3
1&3
1&3
1&3
Min
Min
Min
Max
Max
Max
1386 1/
0.205
N/A
0.355
1994
2135
0.505
2456
2597
1411 1/
0.210
N/A
0.360
2011
2152
0.510
2470
2611
1435 1/
0.215
N/A
0.365
2028
2169
0.515
2484
2625
1458 1/
0.220
N/A
0.370
2045
2186
0.520
2498
2639
0.225
1482
1623
0.375
2062
2203
0.525
2512
2653
0.231 2/
1509
1650
0.380
2078
2219
0.530
2525
2666
0.235
1532
1673
0.385
2095
2236
0.535
2539
2680
0.240
1554
1695
0.390
2111
2252
0.540
2552
2693
0.245
1575
1716
0.395
2127
2268
0.545
2566
2707
0.250 3/
1596
1737
0.400
2143
2284
0.550
2579
2720
0.255
1618
1759
0.405
2159
2300
0.555
2593
2734
0.260
1638
1779
0.410
2175
2316
0.560
2606
2747
0.265
1659
1800
0.415
2191
2332
0.565
2619
2760
0.270
1679
1820
0.420
2206
2347
0.570
2632
2773
0.275
1699
1840
0.425
2222
2363
0.575
2645
2786
0.280
1719
1860
0.430
2237
2378
0.580
2658
2799
0.285
1739
1880
0.435
2252
2393
0.585
2671
2812
0.290
1758
1899
0.440
2267
2408
0.590
2684
2825
0.295
1778
1919
0.445
2282
2423
0.595
2697
2838
0.300
1797
1938
0.450
2297
2438
0.600
2710
2851
0.305
1815
1956
0.455
2312
2453
0.605
2723
2864
0.310
1834
1975
0.460
2327
2468
0.610
2736
2877
0.315
1853
1994
0.465
2342
2483
0.615
2749
2890
0.320
1871
2012
0.470
2356
2497
0.620
2762
2903
0.624 4/
0.325
1889
2030
0.475
2371
2512
2772
2913
0.330
1907
2048
0.480
2385
2526
0.625
2775
2916
0.335
1925
2066
0.485
2400
2541
0.630
2788
2929
0.340
1942
2083
0.490
2414
2555
0.635
2801
2942
0.345
1960
2101
0.495
2428
2569
0.640
2814
2955
0.350
1977
2118
0.500
2442
2583
0.645
2827
2968
1/
Values only apply to Class 1
2/
Specification requirements begin for this ordered thickness for Class 1.
3/
Specification requirements begin for this ordered thickness for Class 3.
4/
Specification requirements end for this ordered thickness for Classes 1 & 3.
Note: Tabulated values on either side of the specification requirements are for interpolation
of BL(P) requirements on undersize or oversize plates.
31
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