AVX 4CUF7 thread inserts are stainless steel knurled nut inserts designed to provide durable 5/16-18 UNC female threads in thin-walled metal parts. Each insert measures 0.515 inches in length and features a knurled exterior to resist rotation during installation, packaged in a bag of 10. The 4CUF7 designation indicates a 5/16-18 thread size within AVX's knurled nut insert family (which also includes 4CUF6 for 1/4-20 and 4CUF8 for 3/8-16), and these inserts are installed into a pre-drilled hole to create a robust captive thread for repeated fastener use.
