1. M6*22 2.iron, brass plated 3.ISO9001:2008 & ISO14001:2004 4.factory, best price, good quality and service. 1. standard: DIN, ANSI, JIS, ISO2.Material: stainless steel, carbon steel, titanium, copper, aluminium, iron and so on.3. Diameter: #6-#14, 1/8"-2 1/2" (2-64mm)4. length: M2-M36 10-250mm5. ISO9001:2008 & ISO14001:2004 certification6. finish: zinc plated, ni-plated, radiant plated, ...