Home | Inconel Flat Washers - High-Temperature Superalloy Washers

Inconel Flat Washers - High-Temperature Superalloy Washers

Inconel flat washers are manufactured from high-performance nickel-based superalloys, providing outstanding corrosion resistance and mechanical strength at elevated temperatures-making them essential in aerospace, gas turbine, chemical processing, and high-temperature industrial applications. Superior Washer & Gasket Corp produces Inconel washers to precise tolerances for the most demanding environments.

Our ISO 9001:2015 certified facility manufactures Inconel washers alongside Monel, phosphor bronze, and other specialty metal washers. Custom Inconel flat washers are available in standard and non-standard sizes, made in the U.S.A. with material certifications for regulated applications.

  • Nickel-based superalloy for extreme temperature performance
  • Outstanding oxidation and corrosion resistance
  • Custom Inconel washer sizes and configurations
  • ISO 9001:2015 certified manufacturing
  • Made in the U.S.A.; material certifications available

Showing 1–14 of 14 products

SKU ID OD Thickness Material ID TOL OD TOL Quantity

315-100-031

ID 0.064
OD 0.189
Thickness 0.031
Material Inconel
ID TOL +-.005
OD TOL +-.005
Quantity

315-101-031

ID 0.093
OD 0.25
Thickness 0.031
Material Inconel
ID TOL +-.005
OD TOL +-.005
Quantity

315-102-031

ID 0.156
OD 0.312
Thickness 0.031
Material Inconel
ID TOL +-.005
OD TOL +-.005
Quantity

315-103-031

ID 0.125
OD 0.375
Thickness 0.031
Material Inconel
ID TOL +-.005
OD TOL +-.005
Quantity

315-104-031

ID 0.202
OD 0.38
Thickness 0.031
Material Inconel
ID TOL +-.005
OD TOL +-.005
Quantity

315-105-031

ID 0.156
OD 0.437
Thickness 0.031
Material Inconel
ID TOL +-.005
OD TOL +-.005
Quantity

315-106-031

ID 0.187
OD 0.437
Thickness 0.031
Material Inconel
ID TOL +-.005
OD TOL +-.005
Quantity

315-107-031

ID 0.203
OD 0.437
Thickness 0.031
Material Inconel
ID TOL +-.005
OD TOL +-.005
Quantity

315-108-031

ID 0.265
OD 0.437
Thickness 0.031
Material Inconel
ID TOL +-.005
OD TOL +-.005
Quantity

315-109-031

ID 0.312
OD 0.449
Thickness 0.031
Material Inconel
ID TOL +-.005
OD TOL +-.005
Quantity

315-110-031

ID 0.281
OD 0.497
Thickness 0.031
Material Inconel
ID TOL +-.005
OD TOL +-.005
Quantity

315-111-031

ID 0.312
OD 0.498
Thickness 0.031
Material Inconel
ID TOL +-.005
OD TOL +-.005
Quantity

315-112-031

ID 0.193
OD 0.625
Thickness 0.031
Material Inconel
ID TOL +-.005
OD TOL +-.005
Quantity

315-113-031

ID 0.281
OD 0.625
Thickness 0.031
Material Inconel
ID TOL +-.005
OD TOL +-.005
Quantity

Inconel Flat Washer Frequently Asked Questions

Below are answers to some of the most common questions about Inconel flat washers.

What are Inconel flat washers?
Inconel flat washers are manufactured from Inconel 718, a nickel-chromium superalloy engineered for extreme high-temperature and high-corrosion environments. Inconel 718 is the choice for aerospace turbine engines, chemical processing, nuclear applications, and exhaust systems where other materials would fail.

What temperatures can Inconel washers withstand?
Inconel 718 maintains its mechanical properties at temperatures that would cause stainless steel to oxidize or lose strength. It is rated for continuous service up to around 1300 degrees F (704 degrees C) with excellent fatigue and creep resistance.

What Inconel grade do you stock?
Superior Washer produces Inconel flat washers in Inconel 718, one of the most widely specified Inconel grades for fastener applications. Contact us for availability and lead times.

Are Inconel washers DFARS specialty metals?
Yes. Inconel and other nickel-iron alloys are classified as DFARS specialty metals. All Inconel materials used in our washers are sourced from the United States or qualifying countries in compliance with DFARS requirements. Material certifications and DFARS documentation are available upon request.

Are your Inconel flat washers made in the USA?
Yes. All Inconel flat washers are manufactured in the United States under our ISO 9001:2015 certified Quality Management System. Material certifications are available upon request.

For applications that don't require Inconel's extreme temperature and corrosion resistance, we offer a wide range of other metal and plastic materials. See our full flat washers selection for more options.