Home | Standard Flat Washers - General-Purpose Washers in All Sizes & Materials

Standard Flat Washers - General-Purpose Washers in All Sizes & Materials

Standard washers are the most widely used fastener components across industrial, commercial, and consumer applications, providing reliable load distribution, surface protection, and joint stability. Superior Washer & Gasket Corp supplies standard flat washers in a comprehensive range of sizes and materials-including steel, stainless steel, brass, aluminum, copper, and nylon-from one of the largest domestic washer inventories available.

As an ISO 9001:2015 certified washer manufacturer, we maintain broad inventory of standard washers for fast delivery and offer custom washer production for non-standard sizes and materials. Whether you need standard SAE or USS washers or custom flat washers in specialty materials, our washer supply capabilities deliver consistent quality made in the U.S.A.

  • SAE and USS standard washer sizes in stock
  • Steel, stainless steel, brass, aluminum, and nylon options
  • Custom standard and special washers available
  • ISO 9001:2015 certified quality management
  • Made in the U.S.A. with fast delivery

Showing 1151–1200 of 1,280 products

SKU ID OD Thickness Material Size Quantity

SS-10TYBW

ID 0.203
OD 0.734
Thickness 0.063
Material Stainless Steel
Size 10
Quantity

SS-10USS

ID 0.25
OD 0.562
Thickness
Material Stainless Steel
Size 3/16 (#10)
Quantity

SS-12MS

ID 0.227
OD 0.5
Thickness 0.048
Material Stainless Steel
Size
Quantity

SS-12TYBN

ID 0.234
OD 0.438
Thickness 0.04
Material Stainless Steel
Size 12
Quantity

SS-12TYBR

ID 0.234
OD 0.625
Thickness 0.063
Material Stainless Steel
Size 12
Quantity

SS-12TYBW

ID 0.234
OD 0.875
Thickness 0.063
Material Stainless Steel
Size 12
Quantity

SS-14MS

ID 0.265
OD 0.562
Thickness 0.048
Material Stainless Steel
Size
Quantity

SS-1TYBN

ID 0.084
OD 0.156
Thickness 0.025
Material Stainless Steel
Size 1
Quantity

SS-1TYBR

ID 0.084
OD 0.219
Thickness 0.025
Material Stainless Steel
Size 1
Quantity

SS-1TYBW

ID 0.084
OD 0.281
Thickness 0.032
Material Stainless Steel
Size 1
Quantity

SS-2-1/2TYBN

ID 2.625
OD 4.5
Thickness 0.25
Material Stainless Steel
Size 2-1/2
Quantity

SS-2-1/2TYBR

ID 2.625
OD 5.5
Thickness 0.375
Material Stainless Steel
Size 2-1/2
Quantity

SS-2-1/2TYBW

ID 2.625
OD 6.0
Thickness 0.375
Material Stainless Steel
Size 2-1/2
Quantity

SS-2-1/4TYBN

ID 2.375
OD 4.0
Thickness 0.25
Material Stainless Steel
Size 2-1/4
Quantity

SS-2-1/4TYBR

ID 2.375
OD 5.0
Thickness 0.25
Material Stainless Steel
Size 2-1/4
Quantity

SS-2-1/4TYBW

ID 2.375
OD 5.5
Thickness 0.375
Material Stainless Steel
Size 2-1/4
Quantity

SS-2-3/4TYBN

ID 2.875
OD 5.0
Thickness 0.25
Material Stainless Steel
Size 2-3/4
Quantity

SS-2-3/4TYBR

ID 2.875
OD 6.0
Thickness 0.375
Material Stainless Steel
Size 2-3/4
Quantity

SS-2-3/4TYBW

ID 2.875
OD 6.5
Thickness 0.375
Material Stainless Steel
Size 2-3/4
Quantity

SS-2.0TYBN

ID 2.125
OD 3.75
Thickness 0.25
Material Stainless Steel
Size 2.000
Quantity

SS-2.0TYBR

ID 2.155
OD 4.5
Thickness 0.25
Material Stainless Steel
Size 2.000
Quantity

SS-2.0TYBW

ID 2.125
OD 5.0
Thickness 0.25
Material Stainless Steel
Size 2.000
Quantity

SS-2MS

ID 0.092
OD 0.219
Thickness 0.018
Material Stainless Steel
Size
Quantity

SS-2TYA

ID 0.094
OD 0.25
Thickness 0.02
Material Stainless Steel
Size 2
Quantity

SS-2TYBN

ID 0.094
OD 0.188
Thickness 0.025
Material Stainless Steel
Size 2
Quantity

SS-2TYBR

ID 0.094
OD 0.25
Thickness 0.032
Material Stainless Steel
Size 2
Quantity

SS-2TYBW

ID 0.094
OD 0.344
Thickness 0.032
Material Stainless Steel
Size 2
Quantity

SS-3.0TYBN

ID 3.125
OD 5.5
Thickness 0.375
Material Stainless Steel
Size 2.000
Quantity

SS-3.0TYBR

ID 3.125
OD 6.5
Thickness 0.375
Material Stainless Steel
Size 3.000
Quantity

SS-3.0TYBW

ID 3.125
OD 7.0
Thickness 0.375
Material Stainless Steel
Size 3.000
Quantity

SS-3/4TYBN

ID 0.812
OD 1.375
Thickness 0.1
Material Stainless Steel
Size 3/4
Quantity

SS-3/4TYBR

ID 0.812
OD 2.0
Thickness 0.1
Material Stainless Steel
Size 3/4
Quantity

SS-3/4TYBW

ID 0.812
OD 2.5
Thickness 0.16
Material Stainless Steel
Size 3/4
Quantity

SS-3/4USS

ID 0.812
OD 2.0
Thickness
Material Stainless Steel
Size 3/4
Quantity

SS-3/8TYBN

ID 0.406
OD 0.734
Thickness 0.063
Material Stainless Steel
Size 3/8
Quantity

SS-3/8TYBR

ID 0.406
OD 1.0
Thickness 0.063
Material Stainless Steel
Size 3/8
Quantity

SS-3/8TYBW

ID 0.406
OD 1.25
Thickness 0.1
Material Stainless Steel
Size 3/8
Quantity

SS-3/8USS

ID 0.437
OD 1.0
Thickness
Material Stainless Steel
Size 3/8
Quantity

SS-3TYBN

ID 0.109
OD 0.219
Thickness 0.025
Material Stainless Steel
Size 3
Quantity

SS-3TYBR

ID 0.109
OD 0.312
Thickness 0.032
Material Stainless Steel
Size 3
Quantity

SS-3TYBW

ID 0.109
OD 0.406
Thickness 0.04
Material Stainless Steel
Size 3
Quantity

SS-4MS

ID 0.125
OD 0.28
Thickness 0.026
Material Stainless Steel
Size
Quantity

SS-4TYBN

ID 0.125
OD 0.25
Thickness 0.032
Material Stainless Steel
Size 4
Quantity

SS-4TYBR

ID 0.125
OD 0.375
Thickness 0.04
Material Stainless Steel
Size 4
Quantity

SS-4TYBW

ID 0.125
OD 0.438
Thickness 0.04
Material Stainless Steel
Size 4
Quantity

SS-5/16TYBN

ID 0.344
OD 0.625
Thickness 0.063
Material Stainless Steel
Size 5/16
Quantity

SS-5/16TYBR

ID 0.344
OD 0.875
Thickness 0.063
Material Stainless Steel
Size 5/16
Quantity

SS-5/16TYBW

ID 0.344
OD 1.125
Thickness 0.063
Material Stainless Steel
Size 5/16
Quantity

SS-5/16USS

ID 0.375
OD 0.875
Thickness
Material Stainless Steel
Size 5/16
Quantity

SS-5/8TYBN

ID 0.656
OD 1.25
Thickness 0.1
Material Stainless Steel
Size 5/8
Quantity

Standard Flat Washer Frequently Asked Questions

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

What are standard flat washers?
Standard flat washers are the most widely used fastener components across industrial, commercial, and consumer applications. They provide reliable load distribution under bolt heads and nuts, protect bearing surfaces from damage, and improve joint stability. Superior Washer stocks standard flat washers in SAE and USS sizes across a comprehensive range of materials including steel, stainless steel, brass, aluminum, nylon, PTFE, fiber, and phenolic.

What is the difference between SAE and USS standard washers?
SAE (Society of Automotive Engineers) washers have a smaller outer diameter relative to the bolt size and are used in applications requiring a more compact bearing surface. USS (United States Standard) washers have a larger outer diameter, providing a broader load distribution area. Both series are stocked in multiple materials at Superior Washer.

What materials are your standard flat washers available in?
Superior Washer standard flat washers are available in 1008/1010 carbon steel, stainless steel (301/302/304), brass (Alloy 260), nylon, PTFE, fiber (vulcanized), and phenolic. Steel and stainless steel are available in both plain and zinc-plated finishes. Material and size options are listed in the product filter on this page.

What types of standard washers do you carry beyond SAE and USS?
In addition to SAE and USS, Superior Washer stocks Type A and Type B flat washers, bolt and screw washers, machine screw washers, N400/N401/N402 series washers, inner and outer race spacers, and race spacers. Standard Brass, Nylon Standard, PTFE Standard, Phenolic Standard, and Standard Fiber types are also available. See the product filter for the full type listing.

Can you produce custom standard washers?
Yes. Our standard washer catalog covers over 1,270 stocked configurations, and we also manufacture custom washers to non-standard dimensions, materials, or finishes. Contact us via the Quick Quote form or call NY (631) 273-8282 or SC (803) 366-3250.

Are your standard flat washers made in the USA?
Yes. All standard flat washers are manufactured in the United States at our facilities in Hauppauge, NY (CAGE Code: 1L160) and Rock Hill, SC (CAGE Code: 4WUG7) under our ISO 9001:2015 certified Quality Management System. Material certifications are available upon request.

Standard sizing is just one part of our catalog. Explore our full range of flat washers to see every material and configuration we offer.