#821086 Spec Diameter Thread Threads Length Grade Finish Weight 0.5 (1/2) Partial 20 2.5 (2 1/2) Grade 8 Phos & Oil .1877 Diameter 0.5 (1/2) Thread 20 Length 2.5 (2 1/2) Grade Grade 8 Finish Phos & Oil Weight .1877 Need Something Custom?