Axle End Steel High Tensile Cap Screws-1" Dia 8 Unc -2A , 2-1/4" Thread Length To Rdso Drg. No. Wd-18016-S-01 Alt 2, Item No. 1. Spec: Ab/Rb-39-2002, (Rev.4), Of February-2018, Ab-Rb-40- 2016 Rev-2. [ Warranty Period: 48 Months After The Date Of Delivery ] ]