#014554 Spec Diameter Thread Threads Length Grade Finish Weight 0.3125 (5/16) Partial 18 3.25 (3 1/4) Grade 8 Plain Finish .0778 Diameter 0.3125 (5/16) Thread 18 Length 3.25 (3 1/4) Grade Grade 8 Finish Plain Finish Weight .0778 Need Something Custom?