MIL-DTL-27272C
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not
mandatory.)
6.1 Intended use. The fittings covered by this specification are military unique because they must be
reusable; able to operate satisfactorily in high-temperature fuel, lubricating oil, and water-alcohol systems
and in hydraulic and pneumatic systems in an environment ranging from -65 to +450°F (class 1 fittings)
and to 275°F (class 2 fittings) at the operating pressures specified in table II; and capable of being mated
with polytetrafluoroethylene hose conforming to MIL-DTL-27267 to form hose assemblies conforming to
MIL-DTL-25579. High-pressure pneumatic storage system applications are not recommended.
6.2 Acquisition requirements. Acquisition documents must specify the following:
a. Title, number, and date of this specification.
b. Issue of DoDISS to be cited in the solicitation, and if required, the specific issue of individual
documents referenced (see 2.2.1 and 2.3).
c. Packaging requirements (see 5.1).
d. Size, class, PIN (specified in the applicable specification sheet) and quantity of fittings to be
acquired (see 1.2 and 3.1).
6.3 Qualification. With respect to products requiring qualification, awards will be made only for
products that are, at the time of award of contract, qualified for inclusion in Qualified Products List No.
QPL-27272, whether or not such products have actually been so listed by that date. The attention of the
contractors is called to these requirements and manufacturers are urged to arrange to have the products
that they propose to offer to the Federal Government tested for qualification, in order that they may be
eligible to be awarded contracts or purchase orders for the products covered by this specification.
Information pertaining to qualification of products may be obtained from the qualifying activity, Defense
Supply Center, Columbus (DSCC-VQP), 3990 East Broad Street, Columbus, Ohio 43216-5000).
6.3.1 Requalification. If a fitting design is modified in any way, the modified fitting must be subjected to
and pass the same qualification tests as the original design (see 4.2.3).
6.3.2 Qualification by similarity. Qualification testing will be performed on straight-type flared fittings
conforming to MS27053, 90-degree elbow flared fittings conforming to MS27057 and MS27060, and
flareless fittings conforming to MS27381. A manufacturer who has successfully completed these
qualification testing requirements will also be considered qualified to supply other types of fittings covered
by this specification in that same size. Other combinations may be acceptable based on the part that the
manufacturer is seeking to qualify and documented approval being obtained from the qualifying activity.
Such qualification will be based on certification of similarity provided by the manufacturer. In the event
that a manufacturer does not manufacture fittings conforming to the above types, the manufacturer will
accomplish qualification testing on the style and size of fittings to be supplied and the similarity
certification will not apply.
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