#015055 Spec Diameter Thread Threads Length Grade Finish Weight 0.5 (1/2) Partial 20 2.5 (2 1/2) Grade 8 Plain Finish .1721 Diameter 0.5 (1/2) Thread 20 Length 2.5 (2 1/2) Grade Grade 8 Finish Plain Finish Weight .1721 Need Something Custom?