A-A-52539
3. SALIENT CHARACTERISTICS
3.1 Material. Unless otherwise specified herein, the material used shall be in accordance with the manufacturer’s material specifications, and shall be subjected to all provisions of this CID. The use of recovered material made in compliance with regulatory requirements is acceptable providing that all requirements of this CID are met (see 4.1).
3.1.1 Steel. Hooks shall be forged from steel conforming to ASTM A711. Grade of steel shall be selected by the contractor and shall be heat treated to meet the proof and ultimate strength load specified (see 3.3).
3.1.2 Safety latch. Hooks shall have a safety closure device constructed of noncorrosive metal parts or treated parts that provide a minimum corrosion resistance equal to or greater than that provided by ASTM A153 zinc coating on steel.
3.2 Design and construction. Hooks shall be designed and constructed in accordance with Figure 1. This CID is not intended to limit construction to features other than as shown herein by dimensions, notations and referenced documents.
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NOTES:
1. Tolerance + 3.3 mm (.13) sizes 38.1 (1.5) through 127 (5)
2. Tolerance + 6.35 mm (.25) sizes 215.9 (8.5) through 381 (15)
FIGURE 1. Hooks, hoist (regular eye).
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