Acorn nut, 7/16"-20 x 5/8" | Color: chrome | Order Number: R0134acorn | OEM Number: 7839

Singles, Servi-car, D, DL, R, RL, W, WL, WLA, WLC, WLD.Big Twins '30-early'78. V, VL, VLH, U, UL, ULH, EL, ELC, FL, FLH, Knucklehead, Panhead. Shovelhead.S 125 '51-'52. ST "165" '53-'59. B, Hummer '55-'59. 41TA.