Screw set with washers for timing cover / case, magneto chain cover / top bevel cover and crankcase sump screw - suit Norton singles before 1936 to 1938, AND military crankcases or machines with engine timing cover #3681, ZP. Original part numbers 3906 - magneto chain cover screws (cheesehead) x 2 3689; A2/36 - timing cover screw (cheesehead) x 7; 9063; A2/37 - timing cover screw (countersunk) x 2; 3908 - crankcase sump screw 3909; 11775, A2/722; B2/613; 000203 - fibre washers x 1;