MIL-B-13501D (MI)
4.1.1 Responsibility for compliance. All items shall meet all requirements of sections
3 and 5. The inspection set forth in this specification shall become a part of the contractor's
overall inspection system or quality program. The absence of any inspection requirements in
the specification shall not relieve the 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 inspections. The inspection requirements specified herein are
classified as follows:
a. First article inspection (see 4.4).
b. Quality conformance inspection (see 4.5).
4.3 Inspection conditions. Unless otherwise specified, all inspections shall be
performed in accordance with the test conditions specified in 4.4, 4.5 and 4.6.
4.3.1 Lot. A lot shall consist of bearings or bushings of the same composition,
construction, design and size submitted for delivery at the same time.
4.4 First article inspection. When specified in the contract or order (see 6.2), a first
article sample shall be subjected to first article inspection. Subsequent units shall not be
considered for acceptance until Government approval of the first article sample has been
obtained.
4.5 Quality conformance inspection. Quality conformance inspections shall be as
specified in table II.
Table II. Quality conformance inspection.
INSPECTION
REQUIREMENT PARAGRAPH
TEST PARAGRAPH
Chemical Analysis
3.2.1
4.6.1
Dimensions and tolerances
3.3
4.5.1
Hardness test
3.5
4.6.2
Workmanship
3.8
4.5.1
4.5.1 Inspection. Dimensional and visual inspection of samples shall be conducted to
determine compliance with the requirements specified in 3.3 and 3.8.
4.6 Test methods.
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