MIL-DTL-55668D
TABLE IX. Group B inspection.
Examination or test
Requirement paragraph
Test method paragraph
Subgroup I
Stranded wire
Tin-coating
Tensile strength and elongation
Resistance
Subgroup II
Cord
Retractility
Breaking load
Extension force
Retraction after static vertical loading
Table III, except
Bending flex
as modified by 3.8
Stretch cycling
requirement paragraph
Examination or test
Low temperature (-55 C)
extension and retraction
Cold bend
Retraction at 85 C
TABLE X. Small sample inspection.
Lot size (passed group A inspection)
Sample size
2 to 8
2
9 to 15
2
16 to 25
2
26 to 50
3
51 to 90
3
91 to 150
3
151 to 280
5
281 to 500
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4.6.4 Group C inspection. This inspection shall consist of the tests specified in table XI and shall be
performed periodically as indicated in 4.6.4.1. Samples shall be selected from lots that have passed
group A and B inspection.
TABLE XI. Group C inspection.
Examination or test
Requirement paragraph
Test method paragraph
Low temperature rapid
Table III, except as modified
extension
by 3.8
Humidity cycling
Simulated storage
4.6.4.1 Inspection sample. One sample shall be selected per each 5,000 feet of cord or fraction thereof,
not to exceed a total of five samples per order. Samples shall be selected periodically through the life of
the contract to assure representative results.
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