... Stleels material supplied ourself, price, quality are the best.Machine screw Diameter: 1.7-8MM Length 3-100mmMaterial: carbon steel ... best.Can design according to customer requirementsWe can produce the screw according to the British standards (BS), China national standards ( ... (DIN) or customer's standard (nonstandard). Our high-quality screw is widely used in domestic trades such as toys, furniture ...