MIL-DTL-5513D
TABLE VII. Inspection sample.
Production
Sample size
lot size
1 to 8
All
9 to 90
8
91 to 150
12
151 to 280
19
281 to 500
21
501 to 1,200
27
1,201 to 3,200
35
3,201 to 10,000
38
10,001 to 35,000
46
4.6.2.1 Sampling test procedure. The swivel joints shall be subjected to the endurance test in
accordance with 4.7.6, 4.7.6.1, 4.7.6.1.1, and 4.7.6.1.2. The sand and dust (see 4.7.2 g (2) portion of this
test should only be accomplished twice, after the first 10,000 swivel cycles and after 50,000 swivel cycles.
4.6.2.2 Nonconformance of sampling tests. If one or more defects are identified, then the entire
production lot shall be screened for that defect and all defects shall be removed. A second inspection
sample shall then be selected from the different lot and the sampling tests shall be performed again. If
one or more defects are identified from the second inspection lot then the lot shall be considered as
failed.
4.6.2.3 Rejection and retest. When a swivel joint selected from a production run fails to meet the
specification, no swivel joints still on hand or later produced shall be accepted until the extent and cause
of failure have been determined and appropriately corrected. The contractor shall explain fully in writing
to the procuring activity the cause of failure and the action taken to preclude recurrence. After correction,
all of the tests shall be repeated using new samples.
4.6.2.4 Individual tests. For production reasons, individual tests or other sampling plans may be
continued pending the investigation of a sampling test failure. But final acceptance of the swivel joints on
hand or swivel joints produced later shall not be made until it is determined that all swivel joints meet all
the requirements of the specification.
4.6.2.5 Defects in swivel joints already accepted. The investigation of a test failure could indicate that
defects may exist in swivel joints already accepted. If so, the contractor shall fully advise the procuring
activity of all the defects likely to be found and the method of correcting them.
4.7 Test methods
4.7.1 Examination of product. Each swivel joint shall be examined for conformance to applicable
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