Castle nut, 3/8"-24 x 15/32" x 9/16" hex | Color: chrome | Order Number: R0128C | OEM Number: 7809

Pocket valves. F, J, JD '19-'29. Singles '26-'34. VL, VLH '30-'36. DL, RL, WL, WLA, WLC, WLD '29-'52. Servi-car. XA 1942. EL, ELC, UL, ULH, FL, FLH '37-'66. Knucklehead. Panhead. early Shovelhead. 41 TA.