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Fender Washers

We offer a large variety of thick fender washer sizes that feature a wide variety of outside diameters and hole sizes. Thick fender washers are manufactured in materials such as Low Carbon Steel and Stainless Steel. Since thick fender washers are heavily utilised to hang signs, many industry professionals also refer to them as “sign washers.”
Heavy fender washers are thicker versions of the standard fender washers. Heavy fender washers are at least twice as thick to provide greater strength when the thinner washers dont work.

Fender Washers
Fender Washers Drawing 2

Size (inch) Inside Diameter A (mm) Outside Diameter B (mm) Thickness C (mm)
Basic Min Max Basic Min Max Basic Min Max
1/8 × 5/8 4.064 3.810 4.318 15.875 15.682 16.612 1.651 1.194 2.032
1/8 × 3/4 4.064 3.810 4.318 19.050 18.847 19.779 1.651 1.194 2.032
5/32 × 7/8 4.826 4.623 5.105 22.225 22.024 22.981 1.651 1.194 2.032
3/16 × 3/4 4.826 5.410 5.918 19.050 18.847 19.779 1.651 1.194 2.032
3/16 × 1 4.826 5.410 5.918 25.400 25.189 25.857 1.651 1.194 2.032
3/16 × 1¼ 4.826 5.410 5.918 31.750 31.548 32.486 1.651 1.194 2.032
3/16 × 1½ 4.826 5.410 5.918 38.100 37.898 38.806 1.651 1.194 2.032
1/4 × 1 7.239 6.985 7.493 25.400 25.189 26.136 1.651 1.194 2.032
1/4 × 1¼ 7.239 6.985 7.493 31.750 31.548 32.486 1.651 1.194 2.032
1/4 × 1½ 7.239 6.985 7.493 38.100 37.898 38.806 1.651 1.194 2.032
1/4 × 1¾ 7.239 6.985 7.493 44.730 44.267 45.123 1.651 1.194 2.032
1/4 × 2 7.239 6.985 7.493 50.800 50.588 51.563 1.651 1.194 2.032
5/16 × 7/8 8.839 8.585 9.099 22.225 22.024 22.981 1.651 1.194 2.032
5/16 × 1 8.839 8.585 9.099 25.400 25.189 26.136 1.651 1.194 2.032
5/16 × 1¼ 8.839 8.585 9.099 31.750 31.548 32.486 1.651 1.194 2.032
5/16 × 1½ 8.839 8.585 9.099 38.100 37.898 38.806 1.651 1.194 2.032
5/16 × 1¾ 8.839 8.585 9.099 44.450 44.220 45.031 1.651 1.194 2.032
5/16 × 1⅝ 8.839 8.585 9.099 41.275 41.045 42.051 1.651 1.194 2.032
5/16 × 2 8.839 8.585 9.099 50.800 50.588 51.563 1.651 1.194 2.032
3/8 × 1¼ 10.414 10.160 10.668 31.750 31.548 32.486 1.651 1.194 2.032
3/8 × 1½ 10.414 10.160 10.668 38.100 37.898 38.806 1.651 1.194 2.032
3/8 × 1¾ 10.414 10.160 10.668 44.450 44.220 45.031 1.651 1.194 2.032
3/8 × 1⅝ 10.414 10.160 10.668 41.275 41.045 42.051 1.651 1.194 2.032
3/8 × 2 10.414 10.160 10.668 50.800 50.588 51.563 1.651 1.194 2.032
1/2 × 1¼ 13.609 13.317 13.901 31.750 31.548 32.486 1.651 1.194 2.032
1/2 × 1½ 13.609 13.317 13.901 38.100 37.898 38.806 1.651 1.194 2.032
1/2 × 1¾ 13.609 13.317 13.901 44.450 44.220 45.031 1.651 1.194 2.032
1/2 × 2 13.609 13.317 13.901 50.800 50.588 51.563 1.651 1.194 2.032
1/2 × 2½ 13.609 13.317 13.901 63.500 63.290 64.406 1.651 1.194 2.032
Description A flat washer with a greater surface area than a washer for USS or SAE. They are also produced from a thinner metal gauge than most flat washers.
Applications/ Advantages Used where an additional large surface of the bearing is needed. They were originally intended for auto body repair work and are also used in sheet metal, plumbing, and electrical work. Designed also for the installation of drywall, wood paneling and used to add signs to posts.
Material Steel Stainless Steel
Washers are to be punched from hot-rolled, hot-rolled and pickled, cold rolled steel or machined from bar stock or tubing or may be forged at the option of the manufacturer. 316 or 18-8 Stainless Steel.
Plating Usually fender washer are zinc plated or come without a finish. Usually parts are not supplied with extra finish.