3.1.8 Identification. Grade A and B tools
shall be engraved, stamped or etched with
the following identification:
(a) Army and munitions command
(b) Tool nomenclature.
(c) Tool number.
(d) Component nomenclature.
(e) Instrument nomenclature.
consist of four parts; Contractor identifica-
tion symbol; Tool category sequence of
operation symbol; Component item drawing
number; and the component draWing re-
vision symbol, if any. The tool number shall
be assigned by the contractor.
188.8.131.52 Design. The following design char-
3.2 Detail requirements.
acteristics shall be incorporated
A and B punches and dies.
3.2.1 Type I cutting tools.
184.108.40.206.1 Inserts. Inserts may be used pro-
vided they have sufficient reinforcement and
are locked in place to prevent recoil, rotation,
220.127.116.11.1 Grade A. The material used in this
or any movement detrimental
grade of cutting tool shall be composed of or
carbide patches, and inserts, or electrolized
To facilitate mainte-
high speed tool steel.
nance accuracy and machinability, sectional
. . 18.104.22.168.2 Grade B. The material used in this
punches and dies may be used provided theY
are properly installed and are not weakened
grade of cutting tool shall be composed of
high spped tool steel. In cases where harden-
by excessive use of screws and dowel pins.
Sections lacking adequate support, backing,
ing would cause burn away or distortion of
thin sections, high carbon tool steel shall be
or conditions that would weaken the die
beyond safe working limits shall not be used.