We stock cup square hex carriage bolts in M10 , M12 in lenghths from 75mm – 300mm and M16 from 75mm -130mm . Other sizes are available upon request . We only supply bolts in full boxes . We stock M10 and M12 nuts and square plate washers . Penny washers available in M6 , M8 , other sizes available . All of our bolts and washers are in BZP finish . Please note that all of our bolts come complete with nuts .