MIL-DTL-26500G
6.2 Acquisition requirements. Acquisition documents should specify the following:
a. Title, number, and date of this specification.
b. If required, the specific issue of individual document referenced (see 2.1).
c. Packaging requirements (i.e. level of preservation, packaging, packing, and applicable marking)
(see 5.1).
d. Accessories.
e. Nomenclature by class, type, finish, style, size and PIN (see 3.29)
6.3 Qualification. With respect to products requiring qualification, awards will be made only for
products which are, at the time of award of contract, qualified for inclusion in the Qualified Products List
QPL No. 26500 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 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 orders for the products covered by this specification. Information
pertaining to qualification of products may be obtained from DLA Land and Maritime, ATTN: VQ,
P.O. Box 3990, Columbus, Ohio 43218-3990 (point of contact: vqp.chief@dla.mil). An online listing of
products qualified to this specification may be found in the Qualified Products Database (QPD) at
6.4 Subject term (key word) listing.
Bayonet coupling
Threaded coupling
6.5 Military unique statement. This connector is military unique because it is an environment resisting
circular connector, capable of operating in high shock, high vibration and high temperature environments
as well as meeting the salt spray corrosion requirements of this specification. It is designed to be used in
advanced aircraft, missile, rocket and space vehicles.
6.6 Environmentally preferable material. Environmentally preferable materials should be used to the
maximum extent possible to meet the requirements of this specification. As of the dating of this
document, the U.S. Environmental Protection Agency (EPA) is focusing efforts on reducing 31 priority
chemicals. The list of chemicals and additional information is available on their website
https://www.epa.gov/osw/hazard/wastemin/priority.htm. Included in the EPA list of 31 priority chemicals
are cadmium, lead, and mercury. Use of these materials should be minimized or eliminated unless
needed to meet the requirements specified herein (see section 3).
6.7 Guidance on use of alternative parts with less hazardous or nonhazardous materials. This
specification provides for a number of alternative plating materials via the PIN. Users should select the
PIN with the least hazardous material that meets the form, fit and function requirements of their
application.
6.8 Tin whisker growth (see 3.3.3). The use of alloys with tin content greater than 97 percent, by
mass, may exhibit tin whisker growth problems after manufacture. Tin whiskers may occur anytime from
a day to years after manufacture and can develop under typical operating conditions, on products that
use such materials. Conformal coatings applied over top of a whisker-prone surface will not prevent the
formation of tin whiskers. Alloys of 3 percent lead, by mass, have shown to inhibit the growth of tin
whiskers. For additional information on this matter, refer to ASTM B545 (Standard Specification for
Electrodeposited Coatings of Tin).
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