ASME B18.21.1 Stainless Steel Plain Washers

Overview:

Stainless steel flat washers are essential components in many mechanical and structural applications. They are used to distribute the load of a threaded fastener, such as a bolt or nut, over a larger surface area, preventing damage to the material being fastened. Stainless steel is often preferred for its corrosion resistance and durability, making it suitable for applications where exposure to moisture or harsh environments is a concern.

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Specifications

Dimension Table

Why AYA

Specifications

Commodity	Stainless Steel Plain Washers
Material	Made from stainless steel, these washers have good chemical resistance and may be mildly magnetic. They are also known as A2/A4 stainless steel.
Shape Type	Flat round.
Standard	Washers that meet ASME B18.21.1 or DIN 125 specifications comply with these dimensional standards.
Appliation	Flat washers are mainly used to reduce pressure.

Application

Stainless steel plain washers are flat, circular discs with a hole in the center. They are used in conjunction with bolts, screws, or nuts to distribute the load over a larger surface area and prevent damage to the material being fastened. Stainless steel plain washers offer corrosion resistance, making them suitable for various applications, especially in environments where exposure to moisture and corrosive elements is a concern. Here are some common applications for stainless steel plain washers:

Construction Industry:
Used in construction for securing structural elements, distributing loads, and preventing damage to surfaces.

Automotive:
Applied in automotive manufacturing and repairs to provide a stable surface and prevent damage to materials when fastening components.

Electrical Installations:
Used in electrical applications to distribute loads and provide insulation between bolts, screws, and electrical components.

Aerospace Industry:
Applied in aerospace applications where corrosion resistance and reliability are critical for fastening components.

Plumbing Applications:
Washers are employed in plumbing to distribute loads and prevent leaks when fastening pipes and fixtures.

Renewable Energy Projects:
Used in the construction of wind turbines, solar panel structures, and other renewable energy infrastructure to distribute loads and prevent damage.

DIY Projects and Home Repairs:
Used in various DIY projects and home repairs where a stable and corrosion-resistant fastening solution is needed.

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Plain Washers

Nominal Washer Size		Series	Inside Diameter, A			Outside Diameter, B			Thickness, C
				Tolerance			Tolerance		Thickness, C
			Basic	Plus	Minus	Basic	Plus	Minus	Basic	Max.	Min.
N0.0	0.060	Narrow	0.068	0.000	0.005	0.125	0.000	0.005	0.025	0.028	0.022
N0.0	0.060	Regular	0.068	0.000	0.005	0.188	0.000	0.005	0.025	0.028	0.022
N0.0	0.060	Wide	0.068	0.000	0.005	0.250	0.000	0.005	0.025	0.028	0.022
N0.1	0.073	Narrow	0.084	0.000	0.005	0.156	0.000	0.005	0.025	0.028	0.022
N0.1	0.073	Regular	0.084	0.000	0.005	0.219	0.000	0.005	0.025	0.028	0.022
N0.1	0.073	Wide	0.084	0.000	0.005	0.281	0.000	0.005	0.032	0.036	0.028
N0.2	0.086	Narrow	0.094	0.000	0.005	0.188	0.000	0.005	0.025	0.028	0.022
N0.2	0.086	Regular	0.094	0.000	0.005	0.250	0.000	0.005	0.025	0.028	0.022
N0.2	0.086	Wide	0.094	0.000	0.005	0.344	0.000	0.005	0.032	0.036	0.028
N0.3	0.099	Narrow	0.109	0.000	0.005	0.219	0.000	0.005	0.025	0.028	0.022
N0.3	0.099	Regular	0.109	0.000	0.005	0.312	0.000	0.005	0.032	0.036	0.028
N0.3	0.099	Wide	0.109	0.008	0.005	0.409	0.008	0.005	0.040	0.045	0.036
N0.4	0.112	Narrow	0.125	0.000	0.005	0.250	0.000	0.005	0.032	0.036	0.028
N0.4	0.112	Regular	0.125	0.008	0.005	0.375	0.008	0.005	0.040	0.045	0.036
N0.4	0.112	Wide	0.125	0.008	0.005	0.438	0.008	0.005	0.040	0.045	0.036
N0.5	0.125	Narrow	1.141	0.000	0.005	0.281	0.000	0.005	0.032	0.036	0.028
N0.5	0.125	Regular	1.141	0.008	0.005	0.406	0.008	0.005	0.040	0.045	0.036
N0.5	0.125	Wide	1.141	0.008	0.005	0.500	0.008	0.005	0.040	0.045	0.036
N0.6	0.138	Narrow	0.156	0.000	0.005	0.312	0.000	0.005	0.032	0.036	0.028
N0.6	0.138	Regular	0.156	0.008	0.005	0.438	0.008	0.005	0.040	0.045	0.036
N0.6	0.138	Wide	0.156	0.008	0.005	0.562	0.008	0.005	0.040	0.045	0.036
N0.8	0.164	Narrow	0.188	0.008	0.005	0.375	0.008	0.005	0.040	0.045	0.036
N0.8	0.164	Regular	0.188	0.008	0.005	0.500	0.008	0.005	0.040	0.045	0.036
N0.8	0.164	Wide	0.188	0.008	0.005	0.625	0.015	0.005	0.063	0.071	0.056
N0.10	0.190	Narrow	0.203	0.008	0.005	0.406	0.008	0.005	0.040	0.045	0.036
N0.10	0.190	Regular	0.203	0.008	0.005	0.562	0.008	0.005	0.040	0.045	0.036
N0.10	0.190	Wide	0.203	0.008	0.005	0.734	0.015	0.007	0.063	0.071	0.056
N0.12	0.216	Narrow	0.234	0.008	0.005	0.438	0.008	0.005	0.040	0.045	0.036
N0.12	0.216	Regular	0.234	0.008	0.005	0.625	0.015	0.005	0.063	0.071	0.056
N0.12	0.216	Wide	0.234	0.008	0.005	0.875	0.015	0.007	0.063	0.071	0.056
1/4	0.250	Narrow	0.281	0.105	0.005	0.500	0.015	0.005	0.063	0.071	0.056
1/4	0.250	Regular	0.281	0.105	0.005	0.734	0.015	0.007	0.063	0.071	0.056
1/4	0.250	Wide	0.281	0.105	0.005	1.000	0.015	0.007	0.063	0.071	0.056