#821778 Spec Diameter Thread Threads Length Grade Finish Weight 0.5 (1/2) Partial 13 3.25 (3 1/4) Grade 8 Plain Finish .2287 Diameter 0.5 (1/2) Thread 13 Length 3.25 (3 1/4) Grade Grade 8 Finish Plain Finish Weight .2287 Need Something Custom?