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Standard, Round Flat Washers & Shims Search

Standard, Round Flat Washers & Shims Search

Standard Flat Washers

Seastrom Manufacturing is a trusted flat washer supplier offering a wide range of custom options for companies in aerospace, defense, automotive and other industries where maximum precision is essential. We manufacture all our products in the USA to the highest quality, reliability and performance standards. Since our company's founding in 1928, we've earned a stellar reputation for solving complex assembly challenges tailored to our customers' expectations and backed by expert engineering support.


Why Buy Standard Flat Washers From Us?

The reasons to choose Seastrom Manufacturing as your precision washer manufacturer include:

  • Large inventory: We have one of the most comprehensive flat washer product selections in our industry. Choose from a wide range of sizes, materials and finishes to meet any project requirement or specification.
  • Fast turnaround times: Unlike most of our competitors, we keep many of our washers in stock, enabling us to ship them quickly and get orders to your facility sooner..
  • Custom solutions: If one of our stock standard flat washers doesn't fit your requirements, we can still accommodate you. Our advanced CNC machining and stamping capabilities enable us to craft custom products that meet unique specifications and tight tolerances.
  • Small-quantity responsiveness: You can order quantities as low as 10 to 20 pieces, which is ideal for prototyping projects.
  • Consistent quality: We implement stringent quality control processes to verify that every washer meets our high standards.


Our Standard Flat Washer Selection

We offer several standard flat washer versions to meet the requirements of any project across a diverse range of industries.


Round Flat Washers

These precision-engineered circular washers can distribute the load of a threaded fastener across an expansive surface area. They're available in multiple sizes and thicknesses and various material choices, including stainless steel, titanium, aluminum, brass, copper, nylon and PTFE.

Consider these washers for applications where reliable load distribution, fastener security and surface protection are crucial, such as electronics, vehicles, aircraft and industrial equipment.


ANSI Standard Flat Washers

Our Type B washer series complies with the stringent guidelines implemented by the American National Standards Institute (ANSI), ensuring consistency, compatibility and reliability across a wide range of industrial and commercial applications. They deliver a reliable, industry-accepted solution for surface protection and load distribution, providing compatibility and quality in critical assemblies.

These washers will fit all standard U.S. fasteners, making them a preferred choice for purchasing managers and engineers seeking a reliable off-the-shelf solution. They perform well in applications where consistent quality and fit are paramount.


Metric Flat Washers

These disc-shaped components are designed and manufactured to international metric standards (not U.S. standards) to comply with metric fasteners. Key functions include preventing surface damage, distributing fastener load and maintaining joint integrity by limiting the loosening and pull-through risks. Material options include metals like aluminum, brass, copper and stainless steel, and non-metallic options, such as fiberglass and nylon.


Request a Flat Washer Quote Today

View our broad selection of flat washers online to explore your options and become familiar with our products. You can also contact us to request a quote or for additional information. .

Start Your Search Here

Round Flat Washers
Round Flat Washers
Metric Flat Washers
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Round Flat Washers

  • Seastrom standards and ANSI standards in one search.
  • Seastrom standard flat washers provide an almost infinite number of ID, OD, Thickness and Material combinations to fit an requirement.
  • ID – Inside dimensions from .020” to 3.00”
  • OD - Outside dimensions from .050” to 4.00”
  • Thk – Thicknesses from .010 to .134
  • Metallic materials available: Aluminum, Brass, Beryllium Copper, Copper, Phosphor bronze, Steel (cold rolled steel), Stainless steel 316, Stainless steel, Titanium.
  • Non-metallic materials available: Acetal, Fiberglass, Fibre, Kapton, Mica, Mylar, Neoprene, Nylatron, Nylon, Phenolic, Polyethylene, PTFE, PVC.
VIEW DETAILS

Ansi Standard Flat Washers

  • Type B Plain Washers (ASME B 18.21.1 Edition 09-2009) are available in narrow, regular and wide series for each standard screw size.
  • The American National Standards Institute (ANSI) provides standards for general use flat washers. Type B is a series of flat washers with tighter tolerances where outside diameters are categorized as Narrow, Regular or Wide for specific bolt sizes.
  • Available screw sizes from 0 to 1”. If a specified screw size is not listed please email a quote request.
  • Metallic materials available: Aluminum, Brass, Beryllium Copper, Copper, Phosphor bronze, Steel (cold rolled steel), Stainless steel, Titanium.
  • Non-metallic materials available: Acetal, Fiberglass, Fibre, Neoprene, Nylon, Polyethylene, PTFE.

Metric Flat Washers

  • Seastrom standard metric washers meet the ANSI B18.22M standard for soft material flat washers. Part numbers are provided for the Regular category, but Narrow and Wide can also be quoted to meet your requirements.
  • ID – Inside dimensions from 1.95 mm to 17.52 mm
  • OD - Outside dimensions from 4.7 mm to 44 mm
  • Thk – Thicknesses from 0.5 mm to 4 mm
  • Metallic materials available: Aluminum, Brass, Beryllium Copper, Copper, Phosphor bronze, Steel (cold rolled steel), Stainless steel, Titanium.
  • Non-metallic materials available: Acetal, Fiberglass, Fibre, Kapton, Mica, Mylar, Neoprene, Nylatron, Nylon, Phenolic, Polyethylene, PTFE, PVC.

Contact Us

  • Request a Quote
  • call1-800-634-2356
  • emailinfo@seastrom-mfg.com
  • location_on456 Seastrom St, Twin Falls, ID 83301

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