The Tri-Star Tapered Brass Heat-Set Threaded Inserts in 4-40 thread size and 0.285 installed length are an essential component for secure and reliable fastening in various applications. Made from high-quality brass, these inserts ensure durability, corrosion resistance, and excellent conductivity. The tapered design allows for easy installation into thermoplastic materials using heat and pressure, providing a strong, permanent thread in the assembly. These inserts are ideal for electronic, automotive, and industrial projects, where strong, reliable fastening is required.