1720368 is a part made by Bossard, a Swiss manufacturing business that specializes in fastening technology. It is a Washer Nut Metric, M6/8 x 16, 360 HV 8.8, Pack of 100. The item is a nut for fastening applications, made of a hardened steel and zinc-plated for corrosion and a higher strength rating. It is a mechanical component and is used in electrical, engineering, plumbing, and other specialist applications.