A-A-50469 Hook, Regular Eye, Latch TypeThis CID applies to latch type hooks that support a load in a direct-pull configuration, and such load is carried in the base (bowl-saddle) of the hook. The hook is intended for use in material handling operations.

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A-A-50469B

2. Material. The hooks shall be constructed conforming to the requirements specified herein. The hook material shall have sufficient ductility to permanently deform before failure. The hook shall be zinc-coated in accordance with the manufacturer’s standard practice.

3. Defects. There shall be no defects when magnetic particle inspected over the entire area of the hook in accordance with ASTM A275, Magnetic Particle Examination of Steel Forgings. A defect is defined as a linear indication revealed by magnetic particle inspection that is greater than 0.125 inch long and whose length is equal to or greater than three times its width.

4. Rated capacity and safety factor. Hooks covered by this CID shall be designed with a rated capacity as specified in table I, with a minimum safety factor of 5.

5. Tested capacity. The hooks shall lift and hold a load equal to not less than five times the rated capacity of the hook. Tests and examinations shall be in accordance with ASME B30.10.

6. Hook-latch assembly. The latch assembly shall be manufactured of noncorrosive metal or have an all-weather anticorrosive finish. The latch assembly shall bridge the throat opening in the closed position and retain loose slings or other hoisting devices under slack conditions. Opening the latch may be accomplished manually or by other methods.

7. Identification marking. Each hook shall be permanently and legibly marked with the rated capacity in short tons (2,000/pound/ton).

8. Measurement conversion. Values used herein are in the inch-pound system and are converted to the metric system in table II.

TABLE II. Measurement conversion.