MIL-DTL-6193D
4.3.3 Test plans and qualification reports.
4.3.3.1 Test plans. Test plans shall be prepared and submitted in accordance with the requirements
of the qualification activity. The method of qualification proposed by the contractor is subject to the
approval of the qualification activity. Manufacturers shall discuss with the qualifying activity the test
specimens and test plans. These plans should state specifically the component characteristic
requirements to be monitored during the test, such as test fixtures, setup, conditions, and identification of
the successor failure criteria should be included as appropriate.
4.3.4 Qualification reports. Qualification reports shall be submitted in accordance with requirements
of the qualifying activity. As a minimum manufacturers shall submit a report identifying test specimens,
and test results.
4.4 Conformance inspection. Conformance inspection shall consist of group A inspections.
4.4.1 Inspection lot. An inspection lot shall consist of all universal joints produced under essentially
the same conditions, and offered for inspection at one time.
4.4.2 Group A inspection. Group A inspection shall consist of the inspection specified in table V.
4.4.2.1 Sampling plan (group A). table V tests shall be performed on a production lot basis.
Samples shall be selected in accordance with table VI.
4.4.2.2 Failures (group A). If one or more sample units fail to pass group A inspection, the lot shall
be screened for that particular defect and defective parts removed. A new sample of parts shall be
selected in accordance with table VI and all group A tests again performed. If one or more defects are
found in the second sample, the lot shall be rejected and shall not be supplied to this specification (see
4.5.5.1).
TABLE V. Group A inspection.
Requirement
Test method
Inspection
paragraph
paragraph
Visual and mechanical inspection
Verification of plating thickness 1/
---
Hardness
---
Torsional play
End and side play
Tightness
TABLE VI. Inspection sample.
Production
Accept on zero
lot size
sample size
Under 200
3
Over 200
4
4.5 Periodic inspection. Periodic inspection shall consist of group B inspection. Except where the
results of these inspections show noncompliance with the applicable requirements (see 4.5.4), delivery of
products which have passed group A inspections shall not be delayed pending the results of these
inspections.
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