Zinc plated standard nuts,OEM available 1. High intensity and rigidity 2. Strict quality control 3. Thoughtful service Zinc plated standard nuts1. Usage: car/ bicycle fastener, medical equipments 2. Grade: Gr1, Gr2, Gr5, TC4, TC113. Processing method: casting, forging and machining4. Standard: DIN 933, DIN 912, DIN934, DIN 7991, GB/T 3908, GB 5780-5782, GB5788, GB6178,6179,6180, etc.5. Package: ...