#822591 Spec Diameter Thread Threads Length Grade Finish Weight 0.3125 (5/16) Partial 18 2.25 (2 1/4) Grade 8 Zinc Yellow .0636 Diameter 0.3125 (5/16) Thread 18 Length 2.25 (2 1/4) Grade Grade 8 Finish Zinc Yellow Weight .0636 Need Something Custom?