These are custom 6-lobe wood screws made in 316 stainless steel material measuring 1.888″ in length +/- .005″.  #10-13 thread tapping thread pitch is rolled after the custom shaped head is cold formed and T20 6-lobe drive incorporated.  Production is done domestically at approximately 50,000 pcs per run and the total quantity was provided to our customer in 2 batches with the first shipment containing 18,000 pcs.