Made of carbon steel and zinc plated, sturdy and Long lasting.. KNURLED DESIGNThe knurled nut makes it easier to insert into the work piece.. 180pcs M3-M10 Rivet Nut Assortment Kit Zinc Plated Carbon Steel Flat Head Threaded Insert Rivet Nutsert. CARBON STEELThe rivet nuts are made of carbon steel and zinc plated, sturdy and Long lasting.. ? There are 180 pieces mixed rivet nuts packaged into a plastic organizer box, which make it easy for storage and use..
