Head, barrel, crankcase stud set, Norton OHV alloy head

Norton ES2, Model 50 alloy head engine barrel through bolts, head nuts, rocker box studs to suit Norton ES2 and Model 18 1955 - 63, stainless steel.
Original part number:
16555 - Rocker box bolts, short - 1/4" bolts (26TPI)  x 2
19843 - Rocker box bolts, long - 5/16" BSF rocker box bolts x 7
C126; D3T/156 - cylinder head sleeve (barrel sleeve) nuts x 4
D3T/2; 19841 - barrel / head stud x 4
T2211; 050322H - 5/16" heavy washers x 7
16556; 050241H - 1/4" heavy washers x 2