MIL-DTL-55040E
4.6 Sampling inspection. Unless otherwise specified (see 6.2), sampling inspection shall consist of
the inspections specified in table II. These sampling inspections shall be performed on a production lot
basis. Each lot shall consist of units of product manufactured under essentially the same conditions, and
at essentially the same time. The unit of product shall be each finished cable. The inspection sample
shall be product selected at random from the production lot without regard to quality and shall be of the
size specified in table III. If one or more defects are found in the inspection sample, the production lot
shall be rejected and shall not be supplied to this specification.
TABLE III. Inspection sample.
Production
Sample size
1/
lot size
1
1
2 to 8
2
9 to 15
3
16 to 25
5
26 to 50
8
51 to 90
13
91 to 150
20
151 to 280
32
281 to 500
50
501 to 1200
80
1201 to 3200
125
3201 to 10000
200
10001 to 35000
315
1/ Lot size will be based on number of units of product.
4.7 Periodic inspection. Unless otherwise specified (see 6.2), the periodic inspection shall consist of
the life cycle test (see table II and 4.8.3.2). One sample per 500 units, or as specified by the procuring
activity (see 6.2), shall be selected for this inspection. If a sample fails to pass this inspection, the
manufacturer shall notify the cognizant inspection activity of such failure. Corrective action shall be taken
on the materials or processes, and on all units of product that were manufactured under essentially the
same conditions and considered subject to the same failure. Acceptance and shipment of the product
shall be discontinued until corrective action acceptable to the procuring activity has been taken. After
corrective action, the life cycle test shall be repeated on additional sample units as specified by the
procuring activity (see 6.2). Final acceptance and shipment shall be withheld until the re-inspection has
shown that the corrective action was successful.
4.8 Methods of inspection.
4.8.1 Visual and mechanical inspection. The cable shall be inspected to verify that the material,
dimensions, color, construction, and workmanship are in accordance with the applicable requirements.
4.8.2 Material tests.
4.8.2.1 Tensile strength. The insulation and jacket shall meet or exceed the minimum values of 3.1.1
or 3.1.3, as applicable, when tested in method 3021 of FED-STD-228.
4.8.2.2 Elongation. The insulation and jacket shall meet or exceed the minimum values of 3.1.1 or
3.1.3, as applicable, when tested in method 3031 of FED-STD-228.
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