MIL-DTL-25531F
3.10 Interchangeability. All parts having the same manufacturer's part number shall be
functionally and dimensionally interchangeable. The drawing number requirements of
MIL-STD-31000 shall govern changes in the manufacturer's part numbers.
3.11 Dimensions. The dimensions of the coupling shall be as shown in Figure 1.
3.12 Weight. The weight of the coupling shall be the minimum consistent with required
performance, but shall not exceed 10 pounds.
3.13 Finishes and protective coatings.
3.13.1 Finishes. The coupling shall have no painted surfaces.
3.13.2 Protective coatings. The coupling shall be adequately protected against corrosion by use
of material or protective coatings acceptable to the procuring activity.
3.13.2.1 Anodizing. All aluminum-alloy parts shall be anodized in accordance with
MIL-A-8625.
3.14 Identification of product. Equipment, assemblies, and parts shall be marked for
identification in accordance with MIL-STD-130.
3.15 Workmanship. The coupling shall be uniform in quality, clean, sound, smooth, and free
from injurious defects.
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are classified as
follows:
a. Qualification inspection (see 4.2).
b. Conformance inspection (see 4.2).
4.2 Classification of tests. The inspection and testing of the couplings shall be classified as
follows:
a. Qualification tests (see 4.3)
b. Quality conformance test see 4.4).
4.3 Qualification tests. The qualification tests shall consist of all the tests specified under 4.6
and conducted in the order listed.
4.3.1 Sampling instructions. The qualification test samples submitted for Government tests shall
consist of two couplings of each manufacturer's part number upon which qualification is desired.
Samples submitted shall be accompanied by a report of the completed qualification test and shall
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