Yardley ® Fiber-Sert ® Inserts Self-Tapping Inserts Provide Easily Installed, Strong, Permanent Threads for Wood, Particle Board, ABS, Foamed Plastics and Other Soft Materials ey dl ar Y Diecast Series Zamak diecast FIBER-SERT self-tapping inserts are designed for low cost, easily installed, permanent threads in wood and similar soft materials. The through threaded design with hex socket on one end, allows the FIBER-SERT Diecast Series insert to be installed by hex drive or stud drive. DIECAST SERIES Part Number Starting Hole Size Recommended starting hole sizes: Tests should be conducted to determine the appropriate hole sizes for your specific application and base material. YARDLEY PRODUCTS CORP 10 West College Avenue · P Box 357 · Yardley, Pennsylvania 19067 - 8357 .O. Toll Free: 1-800-457-0154 · Phone: 215-493-2723 · Fax: 215