1. hex head washer screw 2. standard: DIN, ANSI. JIS. ISO 3. finish: zinc-plated 4. best price, good quality 1. standard: DIN, ANSI, JIS, ISO2. Diameter: #6-#14, 1/8”-2-1/2” (2-64mm)3. Length: M2-M36, 10-250mm4. the material can be titanium, copper, aluminium. iron, stainless steel, carbon steel and so on.5. we are factory in China, and we can provide best price, good quality and service.6. Our ...