Non-Standard Metal Parts manufacturer / supplier in China, offering A194 Gr. 2h ISO 4033 DIN6330 High Tensile Hexagonal Long Nut Hex High Nut, High Quality Fasteners Coupling Nuts, Stainless Steel/Carbon Steel Hexagon Connection Nuts, Zinc Plated Long Hex Nuts, Durable Stainless Steel Long Hex Nuts for Industrial Use and so on.