Bolt, nut, washer for crankcase joining for Norton singles and twins, each ZP, with special reduced, flat head. Twins use 1, singles use 3. Original part number: 13870; 06-7632; 067632 - crankcase bolt, short (single) E3223; A2/5; D12/314; H12/314; B4/667; E2/996 - nut E5456 - washer