Heavy Hex Jam Nuts

Heavy hex jam nuts are typically used in tandem with heavy hex nuts to provide a jamming mechanism strong enough for heavy-duty applications. Their primary function is to lock the main nut in place and prevent loosening due to vibration or stress. Made typically from high-strength ASTM-grade steel, heavy hex jam nuts offer a durable connection that is sometimes fortified with a corrosion-resistant finish. The two-nut assembly is typically paired with a structural heavy hex bolt to enhance the integrity of the connection. The precision in their design and manufacturing means they can withstand significant stress, making them ideal for heavy-duty applications.

Heavy hex jam nuts lock the primary nut, preventing loosening that can lead to mechanical failure. They work exactly like traditional jam nuts, which are thinner fasteners that either tighten against each other or against hex nuts to hold the connection with tension and withstand vibration. With thinner profiles, these fasteners do not support connections on their own and should only be used in conjunction with a secondary hex nut. Huyett’s selection includes a range of sizes to accommodate mating fasteners.

Standard jam nuts perform the same function as a heavy hex jam nut; the difference is in the heaviness of the load that each type of nut can support. Standard jam nuts are suited for general-purpose applications, while heavy hex jam nuts are suited for heavy-duty applications.