Flat Washers in Every Size, Material & Tolerance

Flat washers are essential components in fastener assemblies, distributing load evenly across mating surfaces to prevent wear, protect finishes, and ensure joint integrity. As a leading flat washer manufacturer, Superior Washer & Gasket Corp supplies standard washers, large flat washers, and custom flat washers in aluminum, brass, copper, stainless steel, carbon steel, and nylon-manufactured to your exact specifications.

Our ISO 9001:2015 certified quality management system guarantees consistent dimensional accuracy across every order, from prototype quantities to high-volume production runs. Whether you need special flat washers for a unique application or mil-spec flat washers for aerospace and defense, we deliver reliable solutions made in the U.S.A.

Standard and custom flat washer sizes in stock
Wide selection of materials including stainless steel, brass, aluminum, and nylon
ISO 9001:2015 certified manufacturing and quality control
Custom flat washers produced to print or sample
Competitive pricing with fast turnaround

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Showing 21901–21950 of 25,000+ products

SKU	ID (MM)	OD (MM)	Thickness (MM)	Material	ID MM TOL	OD MM TOL	Quantity
630-2931	ID (MM) 3.861	OD (MM) 8.052	Thickness (MM) 1.016	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2932	ID (MM) 3.861	OD (MM) 10.312	Thickness (MM) 1.041	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2933	ID (MM) 3.861	OD (MM) 11.074	Thickness (MM) 0.127	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2934	ID (MM) 3.861	OD (MM) 11.1	Thickness (MM) 1.016	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2935	ID (MM) 3.861	OD (MM) 12.09	Thickness (MM) 0.508	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2936	ID (MM) 3.861	OD (MM) 12.7	Thickness (MM) 0.762	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2937	ID (MM) 3.861	OD (MM) 14.199	Thickness (MM) 0.813	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2938	ID (MM) 3.861	OD (MM) 16.713	Thickness (MM) 0.889	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2939	ID (MM) 3.861	OD (MM) 18.796	Thickness (MM) 0.838	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2940	ID (MM) 3.861	OD (MM) 25.425	Thickness (MM) 0.61	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2941	ID (MM) 3.886	OD (MM) 7.925	Thickness (MM) 0.813	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2942	ID (MM) 3.886	OD (MM) 9.55	Thickness (MM) 1.194	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2943	ID (MM) 3.886	OD (MM) 9.804	Thickness (MM) 0.711	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2944	ID (MM) 3.886	OD (MM) 16.586	Thickness (MM) 0.686	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2945	ID (MM) 3.912	OD (MM) 4.978	Thickness (MM) 0.203	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2946	ID (MM) 3.912	OD (MM) 6.401	Thickness (MM) 0.762	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2947	ID (MM) 3.912	OD (MM) 8.306	Thickness (MM) 0.61	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2948	ID (MM) 3.912	OD (MM) 18.999	Thickness (MM) 0.94	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2949	ID (MM) 3.937	OD (MM) 6.35	Thickness (MM) 0.381	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2950	ID (MM) 3.937	OD (MM) 7.925	Thickness (MM) 1.016	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2951	ID (MM) 3.937	OD (MM) 11.43	Thickness (MM) 2.921	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2952	ID (MM) 3.962	OD (MM) 6.071	Thickness (MM) 0.94	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2953	ID (MM) 3.962	OD (MM) 6.248	Thickness (MM) 0.127	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2954	ID (MM) 3.962	OD (MM) 6.299	Thickness (MM) 0.305	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2955	ID (MM) 3.962	OD (MM) 6.35	Thickness (MM) 0.127	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2956	ID (MM) 3.962	OD (MM) 6.35	Thickness (MM) 0.254	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2957	ID (MM) 3.962	OD (MM) 6.35	Thickness (MM) 0.381	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2958	ID (MM) 3.962	OD (MM) 6.35	Thickness (MM) 0.508	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2959	ID (MM) 3.962	OD (MM) 6.35	Thickness (MM) 0.635	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2960	ID (MM) 3.962	OD (MM) 6.35	Thickness (MM) 0.787	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2961	ID (MM) 3.962	OD (MM) 6.35	Thickness (MM) 1.016	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2962	ID (MM) 3.962	OD (MM) 6.401	Thickness (MM) 0.737	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2963	ID (MM) 3.962	OD (MM) 6.477	Thickness (MM) 1.194	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2964	ID (MM) 3.962	OD (MM) 6.629	Thickness (MM) 0.762	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2965	ID (MM) 3.962	OD (MM) 6.756	Thickness (MM) 0.381	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2966	ID (MM) 3.962	OD (MM) 6.934	Thickness (MM) 0.381	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2967	ID (MM) 3.962	OD (MM) 7.112	Thickness (MM) 0.813	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2968	ID (MM) 3.962	OD (MM) 7.595	Thickness (MM) 0.66	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2969	ID (MM) 3.962	OD (MM) 7.925	Thickness (MM) 0.127	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2970	ID (MM) 3.962	OD (MM) 7.925	Thickness (MM) 0.254	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2971	ID (MM) 3.962	OD (MM) 7.925	Thickness (MM) 0.381	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2972	ID (MM) 3.962	OD (MM) 7.925	Thickness (MM) 0.508	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2973	ID (MM) 3.962	OD (MM) 7.925	Thickness (MM) 0.635	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2974	ID (MM) 3.962	OD (MM) 7.925	Thickness (MM) 0.787	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2975	ID (MM) 3.962	OD (MM) 7.925	Thickness (MM) 1.016	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2976	ID (MM) 3.962	OD (MM) 7.925	Thickness (MM) 1.27	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2977	ID (MM) 3.962	OD (MM) 8.001	Thickness (MM) 1.194	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2978	ID (MM) 3.962	OD (MM) 9.144	Thickness (MM) 0.737	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2979	ID (MM) 3.962	OD (MM) 9.373	Thickness (MM) 0.457	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity
630-2980	ID (MM) 3.962	OD (MM) 9.525	Thickness (MM) 0.127	Material Stainless Steel	ID MM TOL 0.127	OD MM TOL 0.127	Quantity

Flat Washers in Every Size, Material & Tolerance

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A Special to You is Standard to Us

Made in USA

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