of the subassembly is greater than that of a similar repairable one. With few exceptions
such as high voltage power supplies), the nonrepairable subassembly should evidence a
mean-time-to-failure greater than 5000 hours, and for many applications this figure must
be nearer 50,000 hours.
Precedence of Documents - When the requirements of the contract, this
specification, or applicable subsidiary specifications are in conflict, the following prece-
dence shall apply:
(1) Contract - The contract shall have precedence over any
(2) This Specification - This specification shall have precedence over
all applicable subsidiary specifications. Any deviation from this
specification, or from subsidiary specifications where applicable,
shall be specifically approved in writing by the procuring activity.
( 3 ) Referenced Specifications - Any referenced specification shall have
precedence over all applicable subsidiary specifications referenced
therein. All referenced specifications shall apply to the extent
The parentheses (~, when used in the type designation, will be deleted
or replaced by either a number or letter furnished by the procuring activity upon application
by the contractor for assignment of nomenclature in accordance with 3.3.6. The complete
type number shall be used on nameplates, shipping records and instruction books, as
Ordering Data - Purchasers should exercise any desired options offered
herein, and procurement documents should specify the following:
(1) Title, number, and date of this specification.
(2) Selection of applicable levels of packaging and packing (see 5.1).
(3) Data requirements (see 3.6).
Asterisk - In specification revisions and superseding amendments, an
asterisk "*" preceding a paragraph number denotes paragraphs in which changes have been
made from the previous issue. This has been done as a convenience only and the govern-
ment assumes no liability whatsoever for any inaccuracies in these notations. Bidders and
contractors are cautioned to evaluate the requirements of this document based on the entire
content as written, irrespective of the asterisk notations and relationship to the last pre-
Items of Equipment - The equipment covered by this specification shall
consist of the following item:
Assembly, Quantity Select