The M16-2.0 x 40mm Coarse Metric Hex Threaded Rod Coupling Nut by Fasteners Inc is a pack of 5 steel coupling nuts designed for external hex drive style. The black oxide finish not only adds durability but also provides a sleek and professional appearance. It is important to note that this product carries a California Prop 65 warning due to the potential presence of harmful chemicals in petroleum products during manufacturing and use. Ideal for various industrial and commercial applications, these coupling nuts are a reliable and high-quality solution for fastening needs. Free Shipping Lower 48
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