MIL-DTL-5675C
3.3.2 Hazardous substances. The use of hazardous substances, toxic chemicals, or ozone depleting
chemicals (ODC's) shall be avoided, whenever feasible.
3.3.3 Other materials. Materials not otherwise specified shall conform to applicable specifications and to
the requirements specified herein. All materials that are not specifically described shall be of the highest
quality and suitable for the purpose intended. There shall be no presence of cadmium, titanium,
magnesium, mercury, or beryllium (see 6.4)
3.3.4 Grade A shackles. Grade A shackle, shall be made from steel in accordance with SAE-AMS-6448
or SAE-AMS-S-6758.
3.3.5 Grade B shackles. Grade B shackles shall be made from corrosion-resistant steel conforming to
SAE-AMS-S-7720.
3.3.6 Grade C shackles. Grade C shackle, shall be made from nickel-copper-aluminum alloy conforming
to QQ-N-286.
3.3.7 Dissimilar metals. When dissimilar metals are used in intimate contact with each other, protection
against electrolysis and galvanic corrosion shall be provided. Dissimilar metals such as brass, copper or
steel (except corrosion-resisting steel passivated in accordance with SAE-AMS2700) shall not be used in
intimate contact with aluminum or aluminum alloy. Protective measures for dissimilar metals shall be in
accordance with MIL-STD-889.
3.4 Form and dimensions. The form and dimensions shall be as specified on MS20115.
3.5 Bend and tension. The shackle shall withstand the applicable load specified on MS20115 without
cracks or failure when the shackle is bent as specified herein (see 4.8.3) and then returned to its original
shape.
3.6 Finish. Shackles shall be free from cracks, seams, flaws or other imperfections when viewed as
specified.
3.6.1 Grade A shackles. Grade A shackles shall be cadmium plated in conformance with SAE AMS-QQ-
P-416 Type II, or zinc plated in accordance with ASTM-B633, Type II. This requirement gives a minimum
protection of 96 hours against salt spray in accordance with ASTM-B117.
3.6.2 Grade B and C shackles. Grades B and C shackles shall be polished on all surfaces. Grades B and
C shackles shall withstand exposure to salt spray as specified in 4.8.4.2 without showing any signs of
corrosion. Superficial tarnish removable with a damp cloth shall not be cause for rejection, unless
accomplished by pitting.
3.6.2.1 Salt spray exposure. Salt-spray testing of grade B shackles shall be in accordance with SAE AMS
2700.
3.7 Workmanship. The workmanship shall conform to high grade manufacturing practice for aircraft parts.
Flashes or fins shall be trimmed off, even with, but not below, the surface. Shackles shall be free from
pipes laps, cracks, cold shuts, scale pits, and other injurious defects. Scales shall be removed by sand
blasting or tumbling.
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