Tapered Fit Finserts For Wood and Plastics Inserts. Finserts provide strong metal threads in wood, composition board and thermoplastics such as nylon, polystyrene, cellulose acetate and cycolac. By distributing stress over a greater surface area, firm permanent fastening is ensured.

• The fins give higher holding strength in softer materials
• Available with one, two or three fins for varying material thickness
• Finserts prevent splintering, splitting and thread pullout.