#821188 Spec Diameter Thread Threads Length Grade Finish Weight 0.5 (1/2) Partial 13 2.5 (2 1/2) Grade 5 Zinc Yellow .2066 Diameter 0.5 (1/2) Thread 13 Length 2.5 (2 1/2) Grade Grade 5 Finish Zinc Yellow Weight .2066 Need Something Custom?