Nut - M6-1.0 Hex Serrated Flange x 10mm AF x 6mm Thick - Delco 27SI & Ford "3G" & "6G" Alternators (7748, 7749, 7750, 7751, 7752, 7753, 7755, 7756, 7760, 7764, 7765, 7768, 7769, 7770, 7771, 7774, 7775, 7776, 7777, 7784, 7788, 7790, 7791, 7792, 7793, 7794, 7795, 7796, 7797, 7798, 7799, 8250, 8252, 8253, 8254, 8255, 8256, 8257, 8258, 8259, 8260, 8261, 8263, 8264, 8265, 8266, 8267, 8268, 8305, 8309, 8310, 8311, 8315, 8316, 8317)