Threaded Inserts / Heli Coil:5/16" x 12 UNF - DIN 8140 B

This product is a threaded insert, commonly known as a Heli Coil, designed for repairing or reinforcing threads in low-strength materials such as aluminum or plastic. It is constructed to fit a 5/16-inch nominal diameter with a 12 UNF thread pitch, conforming to the DIN 8140 B standard. These inserts are widely used in industrial manufacturing and maintenance to provide durable internal threading that resists stripping better than native threads in softer substrates. Buyers often select this solution when standard tapping fails or when the host material requires enhanced load-bearing capacity. When selecting the correct size, ensure the 12 UNF pitch matches your fastener requirements and verify that the 5/16-inch nominal diameter aligns with the pre-drilled hole specifications for your specific assembly.