WASIs success story started in 1961 when Emil Wagener and Werner Simon started a new company in Wuppertal. The original two types of stainless steel fasteners, designated A2 and A4, have grown into a range that currently includes tens of thousands of items, 24.000 of which are permanently held in stock and available for immediate delivery.

This not only makes WASI the supplier with the broadest and deepest range on the market, the company is also the global market leader in stainless steel fasteners from A1 to A5 in all strength classes. The company cuts into four divisions: WASI NORM, WASI SOLAR, WASI SPEZIAL and WASI MARITIM.