Superstrut Spring Nut a reliable and easy fastening solution designed specifically for all A series struts and inserts. These self-aligning spring nuts ensure a secure fit, simplifying installation and providing dependable performance. Each pack contains five nuts, available in various sizes including 1/4", 3/8", and 1/2", with packaging options such as bags or cards depending on the size. I for professional and DIY applications, the Superstrut Spring Nut combines convenience with quality to meet your fastening needs. Model Number: ZA100-1/4EG-10