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MIL-M-63984(AR)
All machines removed from production because of some fault, may,
after reworking  Or readjustment,  be returned to production
providing they pass the qualification test above.
The contractor
may request a change of inspection frequency providing he presents
objective evidence to the Contracting Officer to substantiate the
request.
4.4.3.3  Alternate method of inspection of dimensional
characteristics of Belleville Sprng.
In place of the normal
sampling associated with the classification of Defects, and with the
approval of the Contracting Officer, a sample of at least ten (10)
springs shall be dimensionally inspected to qualify the tool used in
the stamping process for use in production.
If addition, a random
sample of five (5) springs shall be selected from the last portion
of each hour's production for dimensional inspection as a control of
the tool during production.
If any defective springs are found during qualification of the
tool,  the tool producing the defective spring shall not be used in
production.
If any defective springs are found when inspection is performed
for control of the tool, the tool producing the defective spring
Further,  that portion of
shall be removed from production.
production since the last tool control check shall be returned to
the contractor for corrective action.
4.4.3.4  Dimensional control of molded parts.
In place of the
normal sampling associated With the Classification of Defects, and
with the approval of the Contracting Officer, and after a curing
time for the parts has been approved (See Note), a sample of three
(3) parts (as molded) from each cavity may be dimensionally
inspected to qualify a new or reworked cavity for use in production
or as a control of each cavity during production.
The inspection of the parts shall be performed only when the
The inspection for
curing time for the parts has been reached.
control of each cavity during production shall be performed on the
above quantities from each cavity after production of each 5000
parts or at the end of each shift, providing the number of parts
of the three
produced during that shift is less that 5000 parts,
Parts
(3) samples, one (1) sample shall be the last part produced.
that fail to comply with dimensional requirements after dimensional
stability has been attained shall be classed defective.

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