MIL‐DTL‐3241F
4.3 Conformance inspection. The contractor shall perform the inspection specified in 4.3.1 through
4.3.3.4. This does no relieve the contractor of his responsibility for performing any additional inspection
which is necessary to control the quality of the product and to assure compliance with all specification
requirements. The government reserves the right to review and evaluate the contractor's inspection
procedures and examine the contractor's inspection records. The contractor's inspection records for all
inspections performed shall accurately reflect the observed attributes (actual measurements shall be
recorded if otherwise required by the contract or this specification) for each characteristic identified within
the required inspection/test parameters as correlated with the particular product offered to the
government (see 6.5).
4.3.1 Group A inspection.
4.3.1.1 Inspection lot. An inspection lot shall consist of all reels of the same type, produced under
essentially the same conditions and offered for inspection at one time.
4.3.1.2 Group A tests. Group A tests shall consist of the tests specified in Table II, and shall be made on
the same set of sample units in the order shown.
4.3.1.2.1 Sampling plan. Statistical sampling and inspection shall be in accordance with ASQ Z1.4 for
general inspection level II. The acceptable quality level (AQL) shall be as specified in Table II. Unless
otherwise specified, the Acceptable Quality Limits (AQLs) listed in this section shall be used to establish
the sample sizes, however, the acceptance number shall be zero. Major and minor defects shall be
defined in ASQ Z1.4.
TABLE II. Group A inspection.
Inspection
Requirement
Test Method
AQL (percent defective)
paragraph
paragraph
Major
Minor
Workmanship
3.12
4.4
1%
4%
Fit on axle
3.4
4.5
see note
Alignment
3.5
4.6
see note
Dielectric strength
3.9
4.12
see note
NOTE: All defects considered major, AQL is 1%.
4.3.2 Group C inspection. This inspection shall consist of the tests specified in Table III, groups C-1 and
C-2, and shall be performed on samples that have been subjected to and met group A inspection.
Sample units shall be selected at random without regard to their quality except that the samples selected
at the start of the contract shall be selected from the first units produced.
4.3.2.1 Group C-1 inspection. The test specified in Table III, group C-1, shall be performed on one unit
at the beginning of production and every month, or every 1,000 units, whichever comes first.
4.3.2.2 Group C-2 inspection. Weld inspection shall be performed at the beginning of production and
every month or every 2,500 units, whichever comes first. The other tests specified in Table III, group C-2,
shall be performed every 5000 units or every three months except that hardness shall be measured in
accordance with ASQ Z1.4, Level 2, AQL 1% on each heat treated batch of heads with each batch
identified through final assembly and shipment.
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