... 1. Size:M3-M48 2. Class/Grade:4.8 - 12.9 3. Finish:Plain,Zinc plated etc 4. ... , white blue zinc, and phosphatingGrade: 4.8 5.8 6.8 8.8 10.9 12.9Material: carbon steel, brass,stainless steel, ... hex nut:4. Metric standard: Grade 4.8, Grade6.8, Grade8.8, Grade10.9,Grade12.9.5. Inch standard: ... : 7-30days or based on the request quantity.12. Our advantage: We are professional manufactuer, offers better ...