f you're spec'ing out a product and need a non-standard washer size, where do you turn? Boker's is a Minneapolis-based outfit that specializes in precision metal stamping and washer production. They've been around for over a century, and they offer "more than 32,000 non-standard washer sizes, spacers and shims that are available with no tooling charges."

Additionally, they do custom work:

Boker's manufactures a range of made-to-order washers with outside diameters of 0.080" to 5.140" that come with a wide variety of inside diameters. Special shapes and sizes up to 12" in diameter can also be produced with a broad range of inside diameters and thicknesses.

Boker's covers a complete range of stamping sizes up to 12" x 12" (flat) with thicknesses from .005" to .190", dependent on the material, and draws up to 3" deep and 8" in diameter.

The company is a go-to for multiple industries: Aerospace, defense, robotics, medical, dental and more. They've just released their 2025 catalog, which you can see here.