Round Bend U-Bolts U-Screw U-Bolt U-Clamp A2 Stainless Steel M6 M8 M10 M12. Pitch: Coarse thread M6x1 M8x1.25 M10x1.5 M12x1.75 M16x2. 304 stainless steel bolts are widely used in industry, furniture decoration and other industries, making them popular in all industries.