Commonly used in aircraft, KD Fasteners, Inc.’s Aluminum 2024 T4 flat washers are a good budget purchase while still offering high strength, good fatigue resistance, and a good strength-to-weight ratio.

Aluminum 2024 is composed of aluminum, manganese, and copper with copper as the primary element. To achieve the T4 temper, metal is solution heat-treated and naturally aged. A T4 temper gives Aluminum 2024 the highest ductility compared to other Aluminum 2024 variants.

Aluminum 2024 T4 CharacteristicsAluminum 2024 T4 Flat Washers

  • Excellent fatigue resistance
  • High strength to weight ratio
  • Highly malleable
  • Non-magnetic
  • Heat treatable
  • MilSpec compliant

While Aluminum 2024 T4 flat washers are not as corrosive resistant as stainless steel and will not work well in marine environments, they are a low density, economical choice for many other applications.


  • Aerospace
  • Aircrafts
  • Clocks
  • Computers
  • Fuses
  • Hydraulics
  • Missiles
  • Munitions
  • Veterinary and orthopedic equipment
  • Structures
  • Gears and shafts
  • Couplings
  • Pistons

We can offer Aluminum 2024 T4 flat 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
  • Type B flat washers
  • Special sizes can be manufactured

Metric line:

  • Din 125 A/B flat washers
  • Din 433 small series flat washers
  • Din 9021 fender washers
  • Special sizes can be manufactured

Whatever Aluminum 2024 flat washer you’re looking for, if we don’t have it on our shelf, we can quickly manufacture it for you. Our washer manufacturing capabilities range from small (under 100 pieces) to large runs. We will custom make your Aluminum 2024 flat washers to your exact specifications. Contact us today by calling 1-800-736-5014 or filling out our contact form.