Dowel -Stainless Steel Flat Washers Highlights Generic Brand Stainless Steel Flat Washers Description: Made of stainless steel washers, durable and strong, rust resistant, long lasting Includes 12 sizes of plain and plain washers usage . With a box to store the washing machines without risk of loss and deterioration. These washers prevent bolts or nuts from going through a surface. Fitment: home, automotive and shop use. Specification: Size: approx. Inner diameter x outer diameter x thickness M4: 4x9x0.8mm/0.12x0.35x0.03inch; M5: 5x10x1mm/0.20x0.39x0.04inch; M6: 6x12x1.6mm/0.24x0.47x0.06inch; M8: 8x16x1.6mm/0.31x0.63x0.06inch; M10: 10x20x2mm/0.39x0.79x0.08inch; M12: 12x24x2.5mm/0.51x0.94x0.10inch; Package includes: 120pcs M4 flat washers 100pcs M5 flat washers 80pcs M6 flat washers 50pcs M8 flat washers 30pcs M10 flat washers 15pcs M12 flat washers 120pcs M4 Lock washers 100pcs M5 Lock washers 80pcs M6 Lock washers 50 M8 Lock washers 30 M10 Lock washers 15 M12 Lock washers