Glarks 320pcs carbon steel flat head threaded rivetnut insert nutsert rivet nut assortment kit?Specification?: Head Type: Flat Head Color: Yellow Material: Zinc Plated Carbon Steel Rivet Nut Size: 5/32"-32UNC, 8-32UNC, 10-24UNC, 1/4"-20UNC, 5/16"-18UNC, 3/8"-16UNC, 1/2"-13UNC?About our rivet nut?: These rivet nuts are suitable for a variety of thickness of the material including steel, fiberglass and plastic, etc, riveting firm with high efficiency, easy to use.?Application?: Perfect for automotive, furniture, decoration and other electrical and industrial products?Package Details:?: Thread -------------- Drill Hole Size --------- Quantity 8-32UNC ---------------- 0.23'' ---------------- 80pcs 10-24UNC -------------- 0.27'' ---------------- 70pcs 5/32"-32UNC ---------- 0.27'' ----------------- 60pcs 1/4"-20UNC ------------ 0.35'' ---------------- 40pcs 5/16"-18UNC ---------- 0.43'' ---------------- 30pcs 3/8"-16UNC ------------ 0.52'' ---------------- 20pcs 1/2"-13UNC ------------ 0.67'' ---------------- 20pcsTotal Quantity: 320pcs?Note?: ? Please check the specific size of the product according to the second picture. Due to manual measurement, there may be errors, please don't mind. ? If you have any questions, please feel free to contact us and we will try our best to help you.