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|  MIL-C-21049F
contractor of the responsibility of ensuring that all products or supplies
submitted to the Government for acceptance comply with all requirements of the
contract. Sampling inspection, as part of manufacturing operations, is an
acceptable practice to ascertain conformance to requirements, however, this does
not authorize submission of known defective material, either indicated or actual,
nor does it commit the Government to accept defective material.
4.2 Classification of inspection. The examination and testing of the
couplings shall be classified as follows:
a.
Qualification inspection (see 4.3)
b.
First article inspection (see 4.4)
c.
Quality conformance inspection (see 4.5)
*
4.3 Qualification inspection. Qualification inspection shall consist of the
examinations and tests speclfied in Table II that are applicable to the coupling
type submitted for qualification inspection.
4.3.1 Qualification samples. Qualification samples shall consist of the
following:
a.
Four couplings of each type for which qualifications is desired.
b.
A Statement of Certification (with supporting test data) from the
manufacturer that each type of coupling submitted conforms to the
reliability requirements cited in paragraphs 3.6.12, 4.7.13 and 6.4.1.
Two sets of manufacturer's drawings for each type coupling submitted
c.
(see 6.4.1).
Samples shall be forwarded to the test facility set forth in the letter of
authorization to submit samples (see 6.4). The samples shall be plainly
identified by securely attached durable tags marked with the following
information:
Samples submitted by (name) on (date) for qualification inspection
in accordance with the requirements of MIL-C-21049F under
authorization (reference authorizing letter by code, serial
number, and date} (see 6.4).
4.3 .2 Retention. The retention of qualification shall consist of periodic
verification to determined compliance of the qualified coupling with the
requirements of this specification. The time and method of periodic verification
shall be specified by the activity responsible for the Qualified Products List and
shall be included in the Notice of Qualification letter.
*
4.4 First article inspection. First article inspection shall consist of the
examinations and tests specified in Table III that are applicable to the coupling
type submitted for first article inspection, listed sequence mandatory.
4.4.1 First article samples.Unless otherwisse specified, as soon as
practicable, after the award of the contract or order, the manufacturer shall
submit two coupling assemblies or two coupling halves or each type specified in
the contract or order. The samples shall be representative of the construction,
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