#014558 Spec Diameter Thread Threads Length Grade Finish Weight 0.3125 (5/16) Partial 18 4.5 (4 1/2) Grade 8 Plain Finish .105 Diameter 0.3125 (5/16) Thread 18 Length 4.5 (4 1/2) Grade Grade 8 Finish Plain Finish Weight .105 Need Something Custom?