MIL-DTL-27599D
4.4 Qualification inspection. Qualification inspection shall be performed at a laboratory acceptable
to the Government (see 6.3) on sample units produced with equipment and procedures normally used in
production. Qualification approval may be granted upon successful completion of the inspections and
tests of 4.4.3 conducted on samples of 4.4.1; such approval to include classes, finishes, shell
configurations, and insert arrangements other than those actually tested provided that the capability to
manufacture these parts is demonstrated by providing exhibit samples. Qualification of class T
connectors also qualified class P connectors.
4.4.1 Sample size. The following test samples, for each series, class, and finish, manufactured by
normal production methods, shall be provided.
a. Two mating pairs of series II and four mating pairs of series I straight plugs and wall mounting
receptacle of each of the nine shell sizes. Three shell sizes shall be service M, three shall be
service I, and three shall be service II. Each arrangement in a given shell size shall be the
densest contact arrangement for that particular service rating. Half the samples of each shell
size shall have pin contacts in the receptacle and socket contacts in the plug. The other
samples shall have socket contacts in the receptacle and pin contacts in the plug. All
samples shall be provided with straight strain relief clamps.
b. One straight plug with spring fingers and counterpart wall mounting receptacle of small,
medium, and large shell sizes with applicable EMI backshells.
c.
One wall mounting receptacle with applicable conductive finish in small, medium, and large
shell sizes, less coupling pins and inserts. These connectors must intermate with samples
provided in 4.4 l.b.
d. One mating pair of series II and two mating pairs of series I will be supplied with the
accessories for each shell size. One mating pair, each size, of series I connectors will be
supplied with environmentally sealed strain relief adapters for sealing on jacketed cable.
Connectors shall be supplied in maximum density contact arrangements with pin contacts in
the receptacles.
4.4.1.1 Sample size (limited qualification). Manufacturers that do not intend to qualify all nine shell
sizes in all series or all contact sizes shall provide the following test samples instead of those specified in
4.4.1a. Four mating pairs of each shell in each series or contact size to be qualified. The maximum
number of connectors that will be tested is 36. Future qualification of additional shell or contact sizes will
require qualification as determined by the qualifying activity.
4.4.2 Preparation of samples. The qualification samples provided under 4.4.1 shall be wired with
wire conforming to SAE-AS22759.
4.4.3 Qualification tests.
a. Samples provided in 4.4.1a shall be divided as indicated. Each group shall contain
approximately the same number of samples. One group shall be subjected to the tests of
group I, table IV, in the sequence indicated. One group of series II and three groups of series
I shall be subjected to the tests of group 2, table IV, in the sequence indicated.
c.
IV.
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