Under the current MacLean-ESNAâ name we continue the tradition of ESNAâ , the pioneer manufacturer of Self-Locking nuts; offering you more than 60 years experience in the Design, Development, and Production of the worlds most reliable fasteners. MacLean-ESNAâ is part of the MACLEAN-FOGGâ Co., one of North America's largest fastener suppliers. In our Pocahontas, AR facility we continue the manufacture of vibration and impact proof ELASTIC STOPâ nuts with the Red Ring of Reliability.

Our extensive line of high quality products includes high tensile nuts for aircraft and aerospace applications, corrosion resistant nuts for marine applications, commercial nuts for automotive, truck, farm and heavy equipment, plus miniature hex and clinch nuts for the electronics industry.