Product Name: External Hexagonal Nut
Size:M3-M100
Level: 4.8/8.8/10.9/12.9
Material steel/35k/45/40Cr/35Crmo
Surface treatment: galvanized
Standard: DIN/ISO
Certificate: ISO 9001
usage: Hexagonal bolts are widely used in fields such as mechanical manufacturing, building structures, automotive industry, power equipment, shipbuilding, bridge engineering, and chemical engineering