5/16-18 x 3/8 Tee Nut 4 Prong Zinc Plated

5/16-18 x 3/8 Tee Nut 4 Prong Zinc Plated . 4 Prong type of nut used to fasten to wood, particle or composite materials, leaving a flush surface. Low Carbon Steel is zinc plated for moderate protection against rust.