1,Name : chipboard screw or DIN7505 2,Standard: DIN,ISO,GB,ANSI,JIS 3,Advantage: Perfect quality, excellent service, low ... 2,Standard: DIN,ISO,GB,ANSI,JIS3,Material : Stainless Steel and carbon steel, Brass. Spring steel .4,Size: M3-M48 1/4"-3 ... "5,Class: 4.8 6.0 8.8 12. ... 9grade6,Dia: 2.5mm-6.3mm7,Length: ...