MIL-DTL-60547G (AR)
4.3 Conformance inspection.
4.3.1 Lot formation. Lot formation shall be in accordance
with lot formation requirement of MIL-STD-1916 (formation and
identification of lots or batches).
4.3.1.1 Heat treatment inspection lot. Heat treatment
inspection lots shall not exceed one mill heat of steel.
Whenever a break in heat treating of eight (8) hours or more
occurs or a furnace is shut down for any length of time, the heat
treatment inspection lot will be terminated and a new lot shall
start. Additionally, heat treatment inspection lots shall be
restricted to components heat treated in the same heat treating
equipment, at the same temperature, for the same length of time
and in one unchanged process. Test samples shall be selected
from the heat treatment inspection lot after final heat
treatment. Components in heat treatment inspection lots shall
remain grouped together and identified by inspection lot until
mechanical property tests have been completed.
4.3.1.1.1 Heat treatment inspection lot for batch furnaces.
When a batch type furnace is used, the heat treatment inspection
lot shall be further restricted to those components heat treated
at the same time in one batch. Batches may be combined into
larger heat treatment inspection lots after qualifying with
individual batches (see 6.14), and provided the restrictions
detailed in this paragraph and in paragraph 4.3.1.1 are met.
4.3.1.2 Miscellaneous lots. Small lots (such as bodies
manufactured from abnormally small heats of steel, or bodies that
have become separated from previously delivered lots, etc.) may
at the discretion of the supplier be grouped into miscellaneous
heat treatment lots. Such lots shall be identified by a
miscellaneous lot number. Test samples shall be selected from
the heat treatment inspection lot after final heat treatment.
Components in heat treatment inspection lots shall remain grouped
together and identified by inspection lot until mechanical
property tests have been completed. The miscellaneous lot thus
constituted shall be the basis for the selection of samples for
the tension test hereinafter prescribed.
4.3.1.3 Projectile lots. When it has
been determined that
bodies of a heat treated lot have complied
with the mechanical
properties requirement of drawing 10535878
for the M1, or drawing
12551740 for the M760, they may be grouped
for further
processing.
4.3.2 Classification of characteristics.
a. Sampling requirements. Inspection sampling requirements
for critical, major and minor characteristics are defined in MIL-
STD-1916. Unless specified otherwise, inspection level IV shall
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