Screw set with washers for timing cover + crankcase / sump, suit Norton twins, P11, ZP. The parts book somtimes lists washers for all screws but they were only used on the sump as the timing cover has a gasket. P11 speciifes all washers. Original part numbers E6980 - crankcase timing cover screws (short) x 6; A3/93; 10940 - timing cover screws (long) x 6; A3/93; 10940 - crankcase /sump screws (long) x 2; 3909; A2/722; B2/613; 11775 ; 000203;20621 - crankcase / sump washers x 2; 3909; A2/722; B2/613; 11775 ; 000203;20621 - timing cover washers x 12;