MIL-DTL-3643B
TABLE IV. Group B inspection.
Requirement
Method
Examination
paragraph
paragraph
Subgroup 1
Visual and mechanical examination:
4.4.1.3
3.3.4
Outer contact form over
4.4.1.4
Assembly and rotation
3.3.5
Subgroup 2
Visual and mechanical examination:
Figure 1
Physical dimensions 1/
3.3
4.4.1.5 and figure 2
3.3.6
Interchangeability (applicable only to male terminations).
1/ Applicable only to female terminations.
4.3.1.4.1 Sampling plan. A sample of parts shall be randomly selected in accordance with table V. If
one or more defects are found, the lot shall be screened for that particular defect and defects removed.
After screening and removal of defects, a new sample of parts shall be randomly selected and subjected
to all tests in accordance with table V. If one or more defects are found in the second sample, the lot
shall be rejected and shall not be supplied to this specification. Group B inspection shall be performed in
any order acceptable to the Government.
TABLE V. Inspection level.
Lot size
Sample size
5
1 to 90
11
91 to 150
13
151 to 280
16
281 to 500
19
501 to 1,200
23
1,201 to 3,200
29
3,201 to 10,000
35
10,001 to 35,000
40
35,001 and over
4.3.1.5 Disposition of sample units. Sample units, which have passed the groups A, and B inspections
may be delivered on the contract or order, if the lot is accepted.
4.3.1.6 Group C inspection. Group C inspection shall consist of the examinations and tests specified in
table VI.
4.3.1.6.1 Sampling plan.
4.3.1.6.1.1 Subgroup 1 (unassembled connectors and associated fittings). Equivalent piece parts for
six sample units of each type connector and associated fitting shall be selected from the first lot
produced. Thereafter, for each 500 connectors and associated fittings subsequently produced, piece
parts for one sample unit shall be selected.
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