Blind-end protection ensures threads remain free from plastic intrusion, making these molded-in threaded inserts essential for maintaining the integrity of your designs. Constructed from durable 300 Series Stainless Steel with a passivated finish, they offer a reliable and corrosion-resistant solution for various applications. Additionally, these inserts are designed to accommodate a 4-40 Unified thread size, providing compatibility with a wide range of components. Ideal for projects requiring a lead-free alternative, their aluminum and stainless steel composition guarantees both strength and sustainability. Trust in the quality and performance of these inserts for your assembly needs.