Knurled press inserts from Grainger require no tools. Securely hold pieces to plastic parts by simply pressing the threaded inserts in to receive the screw or bolt. Brass and stainless steel both offer superior durability, and knurled inserts come in a wide range of internal thread sizes and overall lengths. Choose from flanged and flush heads that make it easy for you to simply press them into place. Find knurled press inserts and a wide selection of other thread inserts at Grainger.