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RR-C-271

Revision G, March 28, 2016

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CHAINS AND ATTACHMENTS, CARBON AND ALLOY STEEL



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Description / Abstract:

Type I, chain, welded steel. Type I is steel chain intended for general service. Type I, class 1, is a special analysis alloy steel recommended for overhead lifting and wherever long life and extremely high tensile strengths are desired.

Type II, chain, weldless. Type II, class 11, mechanical communication chain is intended for use in pulleys used on a line of signal transmission of mechanical telegraphs, i.e. ship's bridge to engine room communication.

Type IV, shackles.

Class 1 shackles. Class 1 pin and cotter pin shackles are intended for general use except overhead lifting.

Class 2 and 3 shackles. Class 2 screw-in pin shackles and 3 bolt and nut shackles are intended for general use including overhead lifting.

Type V, hooks.

Style 1 and 3 hooks. Style 1 slip hooks and style 3 sling hooks are intended to connect chain to a load.

Style 2 hooks. Style 2 grab hooks are intended to connect chain to chain at a specific link.

Style 4 hooks. Style 4 hoist hooks are intended to connect wire rope to a load.

Type XV, end links. End links in accordance with this specification are intended for use with fueling at sea rigging.