... produce din standard hex bolts,nuts,washers,screws 2. size: m6-30x20-250mm DIN931 hex bolts,nuts,washers,screwsgradestandardmaterialdiameterlengthsurfacepackagepaymentMOQ3.6(A ... )product name: bolt2)standard :DIN,BS, ANSI, ISO, GB3)size:m6-m30,1/4''-1''4)length:10mm-250mm,1/2 ... ''--10''Detailed size descriptionA M6*16-50 M8*20-100 M10*20-100 M12*20 ...