Cotterless crank Axle BoltsStandard type, hex head crank bolts with integrated flange washer.Fits most traditional square taper crank BB axles.Designed to be used with additional crank cap covers.14mm Hex head.M8 x 16mm thread.19 x 2mm Integrated flange/washer.7mm head/washer total height.(Secondary ref#: Sturmey Archer/Sunrace: BAS05.002U.B00.0P)