MIL -PRF-53012A
3.4.8 Turnbuckle. The turnbuckle shall be type 1, grade 1, class E in accordance with ASTM
F 1145. The turnbuckle shall have a galvanized finish and be sized, in accordance with ASTM F
1145, by type kit as follows.
3.4.8.1 Type I kit. The turnbuckle for type I kits shall be as specified above and shall be
3/4-inch in size with a clear opening of 18.00 inches, minimum.
3.4.8.2 Type II kit The turnbuckle for type II kits shall be as specified above and shall be
3/8-inch in size with a clear opening of 6.00 inches, minimum.
3.4.9 Wire rope thimble. The wire rope thimble shall be the standard type sized to fit the wire
rope specified in accordance with 3.4.1.1 for a type I kit and 3.4.1.2 for a type II kit. Thimbles
shall have a galvanized finish.
3.4.10 Hoist. A lever hoist is only required for the type I kit. The hoist shall have a capacity
of not less than 3000 pounds and a minimum lift of 15 feet. The hoist shall have swivel hooks
with latches and shall have a galvanized or other corrosion resistant finish.
3.5 Sustainment.
3.5.1 Chest. A rugged chest, capable of containing all the components, shall be provided for
each kit. The chest shall have a cover, cover securing devices, and handles able to withstand
lifting of the chest with all components inside. The quantity of handles shall be determined by
calculating the number of individuals required to lift the chest, with contents, if each individual has
a lift capability of 40 pounds. Component location shall be such as to allow a reasonably balanced
weight distribution for lifting. The chest shall have bins, cradles, or blocking for each kit
component to prevent movement damage during shipping or handling. The chest shall not exceed
22.00 inches in height to allow it to fit into transport. A plan indicating component placement
within the chest shall be provided and secured to the inside of the cover. Chest external finish
color shall be as specified (see 6.2). Kit identification marking shall be applied to the chest
external surface as specified (see 6.2).
3.5.2 Materials. The contractor shall select the materials not otherwise identified, capable of
meeting all of the operational and environmental requirements specified herein.
3.5.2.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or
environmentally preferable materials should be used to the extent possible provided that the
material meets or exceeds the operational and maintenance requirements, and promotes
economically advantageous life cycle costs.
3.5.2.2 Dissimilar metals. Dissimilar metals shall not be used in intimate contact with each
other unless protected against galvanic corrosion.
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are classified as
follows:
a. First article inspection (see 4.2).
b. Conformance inspection (see 4.3).
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