Metric is the European standard adopted in the 70's and 80's but not widely used in automotive applications as it is too coarse on the larger sizes. Its wider application is in general construction and engineering. Grade '8.8' 50-55 Tons/ square inch. We carry and can source other sizes not listed, please contact us for details.
All bolts and nuts are displayed by thread size, not AF/Spanner size.
Price breaks at 10, 100 and 1000 regardless of pack quantity.