Helical Insert, UNC 3/4-10×1.5D, PK50, Free Running, Material 304 Stainless, Length: 1.125″, Right Hand Thread Direction. STI Tap size: 3/4-10×1. Application for Metal; High-quality wire thread inserts strengthen thread and provide for longer thread life. These inserts can also be provided with full traceability and conformity certificates.