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|  MIL-R-5757H
4.2.7 Tolerances. Unless otherwise specified (see 3.1), all electrical, environmental, and mechanical
parameters shall have a tolerance of 10 percent.
4.2.8 Alternate test equipment. Test circuits and test equipment herein are intended to provide
guidance to the relay manufacturer. Use of any alternate test circuits and/or test equipment shall be
approved by the qualifying activity prior to use.
4.2.9 Test equipment and inspection facilities. The manufacturer shall establish and maintain a
calibration system in accordance with ANSI/NCSL Z540-1, ISO-10012-1, or equivalent system as
approved by the qualifying activity.
4.3 Qualification inspection. Qualification inspection shall be performed at a laboratory acceptable to
the Government (see 6.3) on sample units produced with equipment and procedures normally used in
production.
4.3.1 Qualification. A certification of construction to the materials requirements of 3.3, and the
interface and construction requirements of 3.4 shall accompany the submission of qualification
inspection results to the qualifying activity.
4.3.1.1 Sample size. The number of relays to be subjected to qualification inspection shall be as
specified in table I. The sample shall be selected from a production run and shall be produced with
equipment and procedures normally used in production. The qualification sample shall be as defined in
table I.
4.3.2 Inspection routine. Sample units shall be subjected to qualification inspection outlined in table I,
in the order shown, except that group Q2 through group Q7 inclusive, may be conducted concurrently.
All sample units shall be subjected to the inspections of Q1. These sample units shall then be divided
into six groups as specified in table I and subjected to the inspection specified for their particular group.
4.3.3 Failures. Failures in excess of those allowed in table I shall be cause for refusal to grant
qualification approval.
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