Threaded Inserts / Heli Coil:3/4" x 20 UNC - DIN 8140 B

These threaded inserts are precision-engineered coil components designed to reinforce thread engagement in soft materials. Constructed according to the DIN 8140 B standard, they feature a 3/4 inch nominal diameter and a 20 thread series UNC profile. Buyers select these inserts to restore damaged threads or provide durable internal threading in applications where native material strength is insufficient for high-torque connections. The helical wire design maximizes shear area, ensuring superior load distribution compared to standard tapped holes. When selecting a size, verify that the 3/4 inch diameter matches the pilot hole preparation requirements for your specific UNC 20 thread application.