insert nuts: 1).Produced with drawings or samples; 2).Over 10 years experience, with a high quality and competitive price. Insert nuts 1). Material used: all kinds of carbon steel, stainless steel, brass, etc.2). Standard: DIN, ANSI, JIS, GB, etc;3). Size: M2 to M18; 4). Thread: UNF, UNC, self-tapping, or self-drilling; full thread or half; 5). Finish: Zinc plating, nickel plating, tin plating, ...