This study investigated the effect of adding mica filler on the tensile strength of nylon-6 polymer composites. Nylon-6 powder was mixed with 10% mica filler and molded using transfer molding. Testing according to ASTM D638 standards found that the tensile strength of pure nylon-6 powder was 165.388 kgf/cm2 whereas the composite of nylon-6 with 10% mica filler exhibited a tensile strength of 363.453 kgf/cm2, representing a significant increase in strength through the addition of the mica filler. Therefore, the nylon-6 composite shows promise for applications requiring increased strength, such as automotive parts.