MIL-DTL-60525B
3.10.3 Foreign matter. No part or assembly shall contain chips, dirt, grease, rust, corrosion or
other foreign matter.
4. VERIFICATION
4.1 Quality assurance terms and definitions. Reference shall be made to ASQ A8402 to define
the quality assurance terms used.
4.1.2 Inspection. Inspection shall be in accordance with MIL-A-2550.
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 under
the following conditions:
a. Temperature: Room ambient 20 to 25 °C (68 to 77 °F)
b. Altitude: Sea level
c. Humidity: 50 percent relative, maximum.
d. Atmospheric pressure: 14.7 psia
4.4 First article inspection. At the beginning of regular production, the contractor shall submit a
first article sample to a Government approved facility for evaluation. The sample shall consist of
5 metal parts assemblies, 9 sets of unassembled parts, and 1 set of unassembled parts without
plating or final protective finish. The sample shall be manufactured in the same manner, using the
same materials, equipment, processes, and procedures as used in regular production. All parts and
materials, including packaging and packing, must be the same as will be used for regular
production and shall be obtained from the same source of supply. After inspection and
provisional acceptance at source, the first article sample shall be inspected for all requirements of
the drawings and specifications. The Government reserves the right to require new first article
samples until such time as an acceptable sample is submitted (see 6.3).
4.5 Quality conformance inspection.
4.5.1 Lot.
4.5.1.1 Submission of product. The product shall be submitted in accordance with ASQ Z1.4.
4.5.1.2 Size of lot. For the purpose of identification and shipment, the shipping lots of metal parts
assemblies shall consist of 1200 assemblies, maximum, provided the homogeneity requirements
of inspection lots have been retained.
4.5.2 Examination. One-hundred percent examination shall be performed for all critical defects.
Examination for major and minor defects shall be performed. Four power (4X) magnification
may be used in performing visual examination for such defects as burr and foreign matter.
Inspection for rubber O-rings shall be in accordance with ISO 3601-3. When compliance with the
applicable requirement is in doubt as a result of visual examination, the characteristic shall be
measured or gaged to determine acceptability. All nonconforming material shall be rejected.
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