slotted rivet nut specification: M5,M6,M8 material:carbon steel zinc plated: colorful , white ... : body with open notch, head with notchwe use cold forged technique, not only save materials,good looking but also loading force ... can produce according to your drawing if we can do . specification:M3 ,M4 ,M5, M6, M8 ,M10 ,M12, inch: 5/32 ...