KD Fasteners, Inc.’s Monel 500 flat washers are great washers for the marine and chemical industries.

Monel 500 flat washers are strong and corrosion resistant. They also have good toughness at high temperatures, low permeability and are non-magnetic at temperatures as low as -150°F. They remain corrosion resistant in environments ranging from pure water to non-oxidizing mineral acids, salts and alkalis. Finally, Monel 500 flat washers offer excellent resistance to high-velocity sea water and resistance to a sour gas environment.

Monel 500 CharacteristicsMOnel 500 Flat Washers

  • Corrosion resistance
  • Good strength and hardness
  • Resistant to a sour gas environment
  • Spark resistant
  • Non-magnetic to -200°F
  • Excellent tensile and yield strengths at subzero temperatures


  • Pump shafts
  • Impellers
  • Doctors blades and scrapers
  • Oil and gas production
  • Electronic components
  • Sour-gas service applications
  • Oil well tools and instruments
  • Marine industry
  • Cryogenic applications

We offer washers to the specific dimensions and plating that you need. We offer off-the-shelf sizing ranging from 0.062 to 12 inch inside diameter and thicknesses from 0.002 to ½ inch.

Standard line:

  • USS
  • SAE
  • Fender washers
  • Special flat washers can be made to order

Metric line:

  • Din 125 A/B flat washers
  • Din 433 small series flat washers
  • Din 9021 fender washers
  • Special flat washers made to order

Whatever Monel 500 flat washer you’re looking for, if we don’t have it on our shelf, we can quickly manufacture if for you. Our washer capabilities range from small (under 100 pieces) to large runs. We will custom make your Monel 500 flat washers to your exact specifications. Contact us today by calling 1-800-736-5014 or filling out our contact form.