On December 19, 1999, 45 stainless steel 1-1/8 Heavy Hex ZipNuts® were used by the Department of Energy Savannah River Project to speed up maintenance in a high radiation area during a nuclear outage. The ZipNuts® were successful and reduced worker radiation.

The patented ZipNut® design is covered by the ASME Boiler and Pressure Vessel Code, Case N-579.

12/28/1999