MIL-DTL-26518C
TABLE VII. Group A inspection.
Inspection
Requirement
Test
paragraph
paragraph
4.7.1.1
Examination of product
3.1, 3.3, 3.5,
3.7, and 3.8
3.6.7.1
4.7.8.1
Dielectric withstanding voltage
4.6.1.2. Sampling plan. Statistical sampling and inspection for the samples submitted for group A inspection shall be on a lot by
lot basis with sample sizes as listed in table VIII. Any occurrence of a failure shall be considered as failure of the lot.
TABLE VIII. Lot and sample size.
Lot size
Sample size
5
1 to 50
7
51 to 90
11
91 to 150
13
151 to 280
16
281 to 500
19
501 to 1200
23
1201 to 3200
29
3201 to 10000
35
10001 to .....
4.6.1.3 Inspection lot. An inspection lot shall consist of all connectors or removable crimp contacts, as applicable, covered by a
single specification sheet, produced under essentially the same conditions, and offered for inspection at one time.
4.6.1.4 Disposition of sample units. Sample units, which have passed group A inspection, may be delivered on a contract or
purchase order if the lot is accepted.
4.6.2 Group B inspection (periodic). Periodic inspection shall consist of a 12-month inspection and a 36-month requalification.
Delivery of products, which have passed group A inspection, shall not be delayed pending the results of these periodic inspections.
Upon passing this inspection two consecutive times, the supplier may select sample connectors every 36 months. If production of a
particular PIN is not current, the periodic inspection tests shall take place at the time production is resumed. The testing shall revert
to the original schedule, which is applied to a newly qualified product. If periodic classes on both R and H is desired, one completely
assembled plug and receptacle of each class shall be subjected to the examinations and tests in lieu of two of a single class.
4.6.2.1 Group B inspection. Group B inspection shall consist of the examinations and tests specified in table IX, in the order
shown, and the sample shall be selected from inspection lots that have passed group A inspection. Connectors shall be selected at
random during each 36-month integrated production period (see 4.6.2.2).
4.6.2.2 Sampling plan. Connectors shall be selected at random from production as follows:
a.
Class R samples 1, 3, and 5 of table IX shall be in accordance with 4.5a.
b.
Class R samples 2, 4, and 6 of table IX shall be in accordance with 4.5b.
c.
Class H samples shall be in accordance with 4.5d.
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