MIL-DTL-3390H
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful,
but is not mandatory.)
6.1 Intended use.
6.1.1 Class 1 rings. Class 1 rings, other than configurations W, X, and L, are intended
for use in conjunction with textile, webbing, and leather items where the corrosion products of
ferrous metals may adversely affect the textile, webbing, and leather items.
6.1.2 Classes 2 and 3 rings. Classes 2 and 3 rings, other than configurations X and D,
are intended for use as alternates to class 1 rings in periods of emergency. These also may be
used where a specific requirement for additional strength is necessary.
6.1.3 Class 4 rings. Class 4 rings are intended for use on animal equipment in special
applications where high resistance to corrosion is required.
6.1.4 Configurations W, X, and L rings. Configuration W rings are generally used on
munitions command items; configuration X rings are generally used on weapons command
items; configuration L rings are generally used on electronic command items.
6.1.5 Configuration D rings. Configuration D rings are generally used on animal
equipment.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a. Title, number, and date of this specification.
b. Class required (see 1.2 and 1.2.1).
c. Configuration required (see 1.2 and 1.2.2).
g. When configuration "A" ring should be welded (see 3.3.2).
i. AQL (see 4.3.2).
j. Component and material conformance inspection requirements, if different
(see 4.3.3).
k. Packaging (see 5.1).
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