1.031” ID x 2” OD Heavy Duty Flat Washer 1” Bolt Size
9mm ID x 19mm OD Heavy Duty Flat Washer M8 Bolt Size
11mm ID x 22mm OD Heavy Duty Flat Washer M10 Bolt Size
17mm ID x 35mm OD Heavy Duty Flat Washer M16 Bolt Size
22mm ID x 44mm OD Heavy Duty Flat Washer M20 Bolt Size
26mm ID x 51mm OD Heavy Duty Flat Washer M24 Bolt Size