Romulus, MI Custom Manufacturer* $1 - 4.9 Mil 1971 10-49. IATF 16949:2016 and ISO 9001:2015 certified. Custom manufacturer of studs made from aluminum, steel, brass, bronze, copper, iron, stainless steel, bronze, alloy steel, nylon, plastic, polypropylene, PTFE, PVC and other materials.