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We had 100,000 pieces of these custom full thread hanger bolts produced in grade 5 steel material per SAE J429 with zinc clear finish. The overall length was at 3-1/2 inches with 1-1/2 inches of 5/16-18 machine screw thread. The balance was rolled with 5/16-9 wood screw thread. No unthreaded shoulder was incorporated with the parts per our customer's drawing requirements.
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