#824991 Spec Diameter Thread Threads Length Grade Finish Weight 0.3125 (5/16) Partial 18 1.5 (1 1/2) Grade 5 Zinc Flake .0467 Diameter 0.3125 (5/16) Thread 18 Length 1.5 (1 1/2) Grade Grade 5 Finish Zinc Flake Weight .0467 Need Something Custom?