MIL-DTL-27599D
4.5.2.2 Lot definition (group B inspection). The production lot definition in accordance with
MIL-STD-790 is further defined as follows:
A production lot consists of all connectors covered under one military specification or standard,
manufactured from the specified raw materials, processed under the same specification and
procedures, produced by the same type of equipment, and submitted for inspection at one time.
Each production lot of assembled connectors shall be a group identified by a common
manufacturing record through all significant assembly operations.
4.5.2.3 Disposition of sample units. Sample units which have passed all of group B inspection
may be delivered on the contract or purchase order if the lot is accepted and the sample units are still
within specified tolerances.
4.5.3 Periodic inspection. Periodic inspection shall consist of group C inspection. Except where the
results of this inspection show noncompliance with the applicable requirements (see 4.5.3.1.5), delivery of
products which have passed groups A and B inspections shall not be delayed pending the results of this
periodic inspection.
4.5.3.1 Group C inspection (periodic tests). Periodic tests shall be performed on a 12-month and
24-month basis, beginning with the 12-month periodic test, which must be accomplished within this period
after notification of qualification and alternating thereafter with the 24-month periodic test. Samples
submitted to either of these periodic tests shall have passed groups A and B inspections.
4.5.3.1.1 Twelve-month periodic test. The following tests shall be performed:
a. On two mating connectors in the 35 arrangement of the largest shell size in regular
production during that period. Humidity in accordance with 4.6.16.
b. On one plug shell, receptacle shell, and coupling nut of any small and large size of each
series, conduct the salt spray test of 4.6.9.2. This requirement is applicable to series I and II,
finish B.
4.5.3.1.2 Twenty-four month periodic tests. Mating connector sample units shall be selected and
tested in accordance with the following:
a. Two mating plugs and receptacles in each series shall be provided. These samples shall
include at least three shell sizes, small (sizes 8 through 13), medium (sizes 14 through 19),
and large (sizes 20 through 25) manufactured during the period, and all three service ratings.
One mating sample of each configuration shall be fully wired with the applicable wire as
remaining samples shall be fully wired with the applicable wire as specified in 4.4.2 herein
and subjected to the applicable tests in table IV, group 2.
b. On one plug shell, receptacle shell, and coupling nut of any small and large size of each
series, conduct the salt spray test of 4.6.9.2. This requirement is applicable to series I and II,
finish B.
4.5.3.1.3 Failures. If one or more sample units fail to pass group C inspection, the sample shall be
considered to have failed.
4.5.3.1.4 Disposition of sample units. Sample units which have been subjected to group C
inspection shall not be delivered on the contract or purchase order.
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