Features: Key Specifications/Special Features: •Standard: DIN 603, ANSI and BS •Diameter: 5 to 20mm, 1/4 to 3/4 inches •Length: 8 to 200mm, 5/16 to 8 inches •Thread: MM, UNC, UNF and BSW •Grade: 4.8, 5.8, 6.8 and 8.8 •Finish: plain, zinc, black, nickel, chrome and HDG