Grade 5 Strength and Durability: Our Strut Channel Spring Nuts are made from Grade 5 higher strength steel and are 8mm thick, providing superior tensile strength compared to traditional 6mm Strut Channel Nuts. Electro Zinc Plating : The increased thickness of the sturdy zinc plating provides resistance and guarantees long-lasting brightness even after years of use. These spring-loaded C-channel Spring Channel Nuts wipe clean easily and are reusable. Premium Flexible Springs: Long Spring Strut Channel Nuts thicker 1.57-inch (40 mm) springs are used to long-lasting flexibility by retaining their length even after repeated extreme compression. Precision Threads: Each Strut Channel Nut meets U.S. 3/8inch-16 UNC standards and features self-aligning threads and alternating teeth to prevent side slippage under pressure. What You Get: 40 Pcs Spring Strut Channel Nuts, strut channel plastic wing nuts compatible with US strut systems. Widely used in photovoltaic power generation, solar panel fixing, communications, seismic support systems, power infrastructure suspension, ceiling track installation, etc., it is an ideal choice for pillar channel steel. Tips: Since the spring may get tangled during long-distance transportation, just quickly rotate any nut in a certain nut direction to unwind it. Colour:Silver Material:steel Package Contents: 40x Strut Channel Nuts Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.