20 pieces 1/4 in. - 20 tpi x 20 mm threaded inserts + 20 pieces 1/4 in. - 20 tpi x 15 mm threaded inserts + 20 pieces 1/4 in. - 20 tpi x 10 mm threaded inserts + 1 piece 6mm hex key.
Threaded insert head diameter: 0.461" / 11.7mm, body diameter: 0.315" / 8mm, threads diameter of 1/4-20 x 20mm / 15mm: 0.410" / 10.4mm, threads diameter of 1/4-20 x 10mm: 0.389" / 9.9mm.
1/4-20 Insert nut goes into a predrilled hole in the wood and has internal threads, the Screw-In insert offers a strong permanent thread for wood.
Threaded insert features durable construction for a long-lasting hold, ideal to use in furniture applications.