MIL-DTL-18266C
6.3.1 Cordage and cord. The term "cordage" as used in this specification means Cord, Electrical, while
"cord" means Cord Assembly, Electrical.
6.4 Qualification (see 4.2). 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 applicable Qualified
Products List QPL-18266, 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 orders for the products covered by this specification.
Information pertaining to qualification of products may be obtained from the DLA Land and Maritime (Attn:
VQP), 3990 East Broad Street, Columbus, Ohio 43218-3990, Primary e-mail: vqp.do@dla.mil. An online
listing of products qualified to this specification may be found in the Qualified Products Database (QPD)
6.5 Details of construction. This specification is not intended to be restrictive with respect to details of
construction, except where such details are specified. Alternate forms of construction will be considered
provided the contractor submits, to the procuring activity for approval, a clear description of the points of
difference and data to show that all the performance requirements of this specification are being met.
6.5.1 Tin whisker growth (see 3.2.2.1). 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).
6.6 General guidelines for electronic equipment. The information, where applicable, including
materials, processing, workmanship, and fabrication specified in MIL-HDBK-5400 should apply to this
specification. This handbook contains general guidelines for electronic equipment for operation in piloted
aircraft and helicopters, missiles, boosters and allied vehicles. Detail electrical and mechanical design,
performance and test requirements should be as specified in the detail specification or contract. This
handbook is for guidance only. The earphones H-87B/U, to which this cord assembly is connected,
should operate satisfactorily under any of the environmental and mechanical service conditions or
reasonable combination of these conditions, as indicated in MIL-HDBK-5400, for Class 1B equipment,
except that the information for Sand and Dust do not apply.
6.7 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 3.2).
14
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business