ASME B18.22.1 Type B

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Adfast Components offers precision-engineered hot and cold forged fasteners ranging from M3 to M100, ensuring superior strength and reliability. Designed to meet diverse industrial standards, our components guarantee durability and performance.

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Explore Adfast Components for precision-engineered fasteners, offering hot & cold forged solutions with metric sizes from M3 to M100 for diverse industrial needs.

materials

Carbon Steel

Alloy Steel

Stainless Steel

Super Alloys

Non Ferrous Metal & Alloys

High Performance Nickel Alloys

Copper Alloys

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Home
About
Product
Product

Adfast Components offers precision-engineered hot and cold forged fasteners ranging from M3 to M100, ensuring superior strength and reliability. Designed to meet diverse industrial standards, our components guarantee durability and performance.

Precision Components

Pumps & Valves

Automobile

Customised

Electronic

Medical

Contract Manufacturing

3D Printing & Additive Manufacturing

Fastener

Bolts

Coated Fasteners

Washer

Stud Bolts

Nuts

Screws
Resources
Resources

Explore Adfast Components for precision-engineered fasteners, offering hot & cold forged solutions with metric sizes from M3 to M100 for diverse industrial needs.

materials

Carbon Steel

Alloy Steel

Stainless Steel

Super Alloys

Non Ferrous Metal & Alloys

High Performance Nickel Alloys

Copper Alloys

Technical

Specification

Standard

Weight

Applications

Threads
Contact

Dimensions of Type B Flat Washers

Nominal Sizes		Pattern	A			B			C
			Basic	Tolerance		Basic	Tolerance		Basic	Max	Min
			Basic	Plus	Minus	Basic	Plus	Minus	Basic	Max	Min
0	0.060	Narrow	0.068	0.000	0.005	0.125	0.000	0.005	0.025	0.028	0.022
		Regular	0.068	0.000	0.005	0.188	0.000	0.005	0.025	0.028	0.022
		Wide	0.068	0.000	0.005	0.250	0.000	0.005	0.025	0.028	0.022
1	0.073	Narrow	0.084	0.000	0.005	0.156	0.000	0.005	0.025	0.028	0.022
		Regular	0.084	0.000	0.005	0.219	0.000	0.005	0.025	0.028	0.022
		Wide	0.084	0.000	0.005	0.281	0.000	0.005	0.032	0.036	0.028
2	0.086	Narrow	0.094	0.000	0.005	0.188	0.000	0.005	0.025	0.028	0.022
		Regular	0.094	0.000	0.005	0.250	0.000	0.005	0.032	0.036	0.028
		Wide	0.094	0.000	0.005	0.344	0.000	0.005	0.032	0.036	0.028
3	0.099	Narrow	0.109	0.000	0.005	0.219	0.000	0.005	0.025	0.028	0.022
		Regular	0.109	0.000	0.005	0.312	0.000	0.005	0.032	0.036	0.028
		Wide	0.109	0.008	0.005	0.405	0.008	0.005	0.040	0.045	0.036
4	0.112	Narrow	0.125	0.000	0.005	0.250	0.000	0.005	0.032	0.036	0.028
		Regular	0.125	0.008	0.005	0.375	0.008	0.005	0.040	0.045	0.036
		Wide	0.125	0.008	0.005	0.438	0.008	0.005	0.040	0.045	0.036
5	0.125	Narrow	0.141	0.000	0.005	0.281	0.000	0.005	0.032	0.036	0.028
		Regular	0.141	0.008	0.005	0.406	0.008	0.005	0.040	0.045	0.036
		Wide	0.141	0.008	0.005	0.500	0.008	0.005	0.040	0.045	0.036
6	0.138	Narrow	0.156	0.000	0.005	0.312	0.000	0.005	0.032	0.036	0.028
		Regular	0.156	0.008	0.005	0.438	0.008	0.005	0.040	0.045	0.036
		Wide	0.156	0.008	0.005	0.562	0.008	0.005	0.040	0.045	0.036
8	0.164	Narrow	0.188	0.008	0.005	0.375	0.008	0.005	0.040	0.045	0.036
		Regular	0.188	0.008	0.005	0.500	0.008	0.005	0.040	0.045	0.036
		Wide	0.188	0.008	0.005	0.625	0.015	0.005	0.063	0.071	0.056
10	0.190	Narrow	0.203	0.008	0.005	0.406	0.008	0.005	0.040	0.045	0.036
		Regular	0.203	0.008	0.005	0.562	0.008	0.005	0.040	0.045	0.036
		Wide	0.203	0.008	0.005	0.734	0.015	0.007	0.063	0.071	0.056
12	0.216	Narrow	0.234	0.008	0.005	0.438	0.008	0.005	0.040	0.045	0.036
		Regular	0.234	0.008	0.005	0.625	0.015	0.005	0.063	0.071	0.056
		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	0.015	0.005	0.500	0.015	0.005	0.063	0.071	0.056
		Regular	0.281	0.015	0.005	0.734	0.015	0.007	0.063	0.071	0.056
		Wide	0.281	0.015	0.005	1.000	0.015	0.007	0.063	0.071	0.056
5/16	0.312	Narrow	0.344	0.015	0.005	0.625	0.015	0.005	0.063	0.071	0.056
		Regular	0.344	0.015	0.005	0.875	0.015	0.007	0.063	0.071	0.056
		Wide	0.344	0.015	0.005	1.125	0.015	0.007	0.063	0.071	0.056
3/8	0.375	Narrow	0.406	0.015	0.005	0.734	0.015	0.007	0.063	0.071	0.056
		Regular	0.406	0.015	0.005	1.000	0.015	0.007	0.063	0.071	0.056
		Wide	0.406	0.015	0.005	1.250	0.030	0.007	0.100	0.112	0.090
7/16	0.438	Narrow	0.469	0.015	0.005	0.875	0.015	0.007	0.063	0.071	0.056
		Regular	0.469	0.015	0.005	1.125	0.015	0.007	0.063	0.071	0.056
		Wide	0.469	0.015	0.005	1.469	0.030	0.007	0.100	0.112	0.090
1/2	0.500	Narrow	0.531	0.015	0.005	1.000	0.015	0.007	0.063	0.071	0.056
		Regular	0.531	0.015	0.005	1.250	0.030	0.007	0.100	0.112	0.090
		Wide	0.531	0.015	0.005	1.750	0.030	0.007	0.100	0.112	0.090
9/16	0.562	Narrow	0.594	0.015	0.005	1.125	0.015	0.007	0.063	0.071	0.056
		Regular	0.594	0.015	0.005	1.469	0.030	0.007	0.100	0.112	0.090
		Wide	0.594	0.015	0.005	2.000	0.030	0.007	0.100	0.112	0.090
5/8	0.625	Narrow	0.656	0.030	0.007	1.250	0.030	0.007	0.100	0.112	0.090
		Regular	0.656	0.030	0.007	1.750	0.030	0.007	0.100	0.112	0.090
		Wide	0.656	0.030	0.007	2.250	0.030	0.007	0.160	0.174	0.146
3/4	0.750	Narrow	0.812	0.030	0.007	1.375	0.030	0.007	0.100	0.112	0.090
		Regular	0.812	0.030	0.007	2.000	0.030	0.007	0.100	0.112	0.090
		Wide	0.812	0.030	0.007	2.500	0.030	0.007	0.160	0.174	0.146
7/8	0.875	Narrow	0.938	0.030	0.007	1.469	0.030	0.007	0.100	0.112	0.090
		Regular	0.938	0.030	0.007	2.250	0.030	0.007	0.160	0.174	0.146
		Wide	0.938	0.030	0.007	2.750	0.030	0.007	0.160	0.174	0.146
1	1.000	Narrow	1.062	0.030	0.007	1.750	0.030	0.007	0.100	0.112	0.090
		Regular	1.062	0.030	0.007	2.500	0.030	0.007	0.160	0.174	0.146
		Wide	1.062	0.030	0.007	3.000	0.030	0.007	0.160	0.174	0.146
1-1/8	1.125	Narrow	1.188	0.030	0.007	2.000	0.030	0.007	0.100	0.112	0.090
		Regular	1.188	0.030	0.007	2.750	0.030	0.007	0.160	0.174	0.146
		Wide	1.188	0.030	0.007	3.250	0.030	0.007	0.160	0.174	0.146
1-1/4	1.250	Narrow	1.312	0.030	0.007	2.250	0.030	0.007	0.160	0.174	0.146
		Regular	1.312	0.030	0.007	3.000	0.030	0.007	0.160	0.174	0.146
		Wide	1.312	0.045	0.010	3.500	0.045	0.010	0.250	0.266	0.234
1-3/8	1.375	Narrow	1.438	0.030	0.07	2.500	0.030	0.007	0.160	0.174	0.146
		Regular	1.438	0.030	0.07	3.250	0.030	0.007	0.160	0.174	0.146
		Wide	1.438	0.045	0.10	3.750	0.045	0.010	0.250	0.266	0.234
1-1/2	1.500	Narrow	1.562	0.030	0.007	2.750	0.030	0.007	0.160	0.174	0.146
		Regular	1.562	0.045	0.010	3.500	0.045	0.010	0.250	0.266	0.234
		Wide	1.562	0.045	0.010	4.000	0.045	0.010	0.250	0.266	0.234
1-5/8	1.625	Narrow	1.750	0.030	0.007	3.000	0.030	0.007	0.160	0.174	0.146
		Regular	1.750	0.045	0.010	3.750	0.045	0.010	0.250	0.266	0.234
		Wide	1.750	0.045	0.010	4.250	0.045	0.010	0.250	0.266	0.234
1-3/4	1.750	Narrow	1.875	0.030	0.007	3.250	0.030	0.007	0.160	0.174	0.146
		Regular	1.875	0.045	0.010	4.000	0.045	0.010	0.250	0.266	0.234
		Wide	1.875	0.045	0.010	4.500	0.045	0.010	0.250	0.266	0.234
1-7/8	1.875	Narrow	2.000	0.045	0.010	3.500	0.045	0.010	0.250	0.266	0.234
		Regular	2.000	0.045	0.010	4.250	0.045	0.010	0.250	0.266	0.234
		Wide	2.000	0.045	0.010	4.750	0.045	0.010	0.250	0.266	0.234
2	2.000	Narrow	2.125	0.045	0.010	3.750	0.045	0.010	0.250	0.266	0.234
		Regular	2.125	0.045	0.010	4.500	0.045	0.010	0.250	0.266	0.234
		Wide	2.125	0.045	0.010	5.000	0.045	0.010	0.250	0.266	0.234
2-1/4	2.250	Narrow	2.375	0.045	0.010	4.000	0.045	0.010	0.250	0.266	0.234
		Regular	2.375	0.045	0.010	5.000	0.045	0.010	0.250	0.266	0.234
		Wide	2.375	0.065	0.010	5.500	0.065	0.010	0.375	0.393	0.357
2-1/2	2.500	Narrow	2.625	0.045	0.010	4.500	0.045	0.010	0.250	0.266	0.234
		Regular	2.625	0.065	0.010	5.500	0.065	0.010	0.375	0.393	0.357
		Wide	2.625	0.065	0.010	6.000	0.065	0.010	0.375	0.393	0.357
2-3/4	2.750	Narrow	2.875	0.045	0.010	5.000	0.045	0.010	0.250	0.266	0.234
		Regular	2.875	0.065	0.010	6.000	0.065	0.010	0.375	0.393	0.357
		Wide	2.875	0.065	0.010	6.500	0.065	0.010	0.375	0.393	0.357
3	3.000	Narrow	3.125	0.065	0.010	5.500	0.065	0.010	0.375	0.393	0.357
		Regular	3.125	0.065	0.010	6.500	0.065	0.010	0.375	0.393	0.357
		Wide	3.125	0.065	0.010	7.000	0.065	0.010	0.375	0.393	0.357

Notes : Dimensions are in inches.

Nominal washers sizes are intended for use with comparable nominal screw or bolt sizes.
Inside and Outside Diameters shall be concentric within at least the inside diameter tolerance.
The 0.734 in. and 1.469 in. outside diameters avoid washers which could be used in coin operated devices.
Washers shall be flat within 0.005 in. for basic outside diameters up to and including 0.875 in. and within 0.010 in. for larger outside diameter

Product

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Product

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ASME B18.22.1 Type B

Dimensions of Type B Flat Washers

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