Stainless Steel assortments are packaged in compartmented strong, clear plastic re-closable storage cases. Kit Contains:(8) M4 x 10 Pan Mach. Screws(8) M4 x 20 Pan Mach. Screws(4) M4 x 30 Pan Mach. Screws(8) M5 x 10 Pan Mach. Screws(8) M5 x 20 Pan Mach. Screws(4) M5 x 30 Pan Mach. Screws(8) M6 x 10 Pan Mach. Screws(8) M6 x 20 Pan Mach. Screws(4) M6 x 30 Pan Mach. Screws(4) M6 x 40 Pan Mach. Screws(8) M4 x 10 Flat Mach. Screws(8) M4 x 20 Flat Mach. Screws(4) M4 x 30 Flat Mach. Screws(8) M5 x 10 Flat Mach. Screws(8) M5 x 20 Flat Mach. Screws(4) M5 x 30 Flat Mach. Screws(8) M6 x 20 Flat Mach. Screws(4) M6 x 30 Flat Mach. Screws(4) M6 x 40 Flat Mach. Screws(20) M4 Lock Nuts(20) M5 Lock Nuts(20) M6 Lock Nuts(20) M4 Flat Washers(20) M5 Flat Washers(20) M6 Flat Washers