#487103 Spec Diameter Thread Threads Length Grade Finish Weight 0.3125 (5/16) Full 18 1.25 (1 1/4) Grade 8 Phos & Oil .0387 Diameter 0.3125 (5/16) Thread 18 Length 1.25 (1 1/4) Grade Grade 8 Finish Phos & Oil Weight .0387 Need Something Custom?