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MIL-A-12560H (MR)
w/INT. AMENDMENT 4
6.10 Metric units. When metric dimensions are required, units for inch, foot, foot-pounds and
feet per second may be converted to the metric equivalent by multiplying them by the following
conversion factors:
To go from
To get
Multiply by
Metric SI unit
English
inch
0.0254
meter (m)
foot
0.3048
meter (m)
foot-lb
1.3558
joule (J)
feet/sec
0.3048
meter per second (m/s)
Note: Conversion factors can be associated with ASTM E380 entitled "Metric Practice
Guide"
6.11 Special first article ballistic test. Special first article ballistic tests are required when the
manufacturer changes either the melting procedure or heat treatment or the declared chemistry of
the armor.
6.12 Fabrication. The armor plate covered by this specification is subject to fabrication involving
cutting, drilling, forming and welding. It is intended that selection and control of chemical
composition, cleanliness, and plate processing should be such that the armor will be suitable for
fabrication in accordance with TACOM code 12479550, TACOM Ground Combat Vehicle
Welding Code-Steel. Copies of this document are available from U.S. Army Tank-Automotive
and Armaments Command, Warren, MI 48397-6000.
6.13 Subject term (key word) listing.
Ballistic limit
Combat vehicles
M2 projectile
M70 projectile
M82 projectile
M318 projectile
M602 projectile
6.14 Amendment notations. The margins of this specification are marked with vertical lines to
indicate modifications generated by this amendment. This was done as a convenience only and
the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders
and contractors are cautioned to evaluate the requirements of this document based on the entire
content irrespective of the marginal notations.
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