Description 1. Model no.: f959/f959m 2. Combination washer packaging: all inclusive 3. Sample: free 4. Trademark: sd 5. Origin: ningbo, china 6. Customer design: support 7. Hs code: 7318220000 Features 1. Heat treatment: yes 2. Surface treatment: zinc plated, h.D.G, black, zinc yellow 3. Material: carbon steel Specification 1. Standard: f959m/f959 2. Diameter: m12-m36 Competitive advantages 1. Top quality control 2. Competitive price 3. Various of design 4. Oem accepted 5. Customer's design and logo are welcome