Conrod bolt and nut, part of bottom end overhaul kit, for Norton later large journal (1-3/4") twin cylinder engines, 650cc to 800cc., Made in UK, 3/8 inch BSC. Set of one nut and one bolt. Original Part Number: 9099; A2/129; 15511; NM15511; 23253; NM23253; 062486; 062458; 067827 - big end nut x 1 23254; NM23254; 067828; 066486 - big end bolt x 1