Stainless Flat Washers

18-8 stainless steel flat washers, the standard washer for stainless bolts and screws, to spread the load and protect the surface. We stock #2, #4, #6, #8, #10, #12, 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-1/2".

Specifications

Material: 18-8 stainless steel
Sizes: #2, #4, #6, #8, #10, #12, 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-1/2"
Style: commercial (SAE pattern) flat washer

Stainless Steel Commercial Flat Washer Dimensions

Size	O.D.	I.D.	Thickness
#2	.250	.099	.015
#4	.312	.125	.015
#6	.375	.149	.032
#8	.375	.174	.032
#10	.437	.203	.032
1/4	5/8	.281	.045
5/16	3/4	.343	.045
3/8	7/8	.406	.045
7/16	1-1/8	.500	.062
1/2	1-1/4	.531	.062
5/8	1-1/2	.687	.078
3/4	1-3/4	.812	.109
7/8	2"	.937	.109
1"	2"	1.062	.125
1-1/8	2-1/2	1.187	.125
1-1/4	2-3/4	1.312	.125
1-1/2	3-1/4	1.562	.140

Type 316 Stainless Steel Flat Washers also available, please contact us.

Common Uses

General assembly with stainless fasteners
Outdoor and marine hardware
Food and process equipment

FAQ

Which size flat washer fits my bolt?
Order the washer by bolt size: a 3/8" washer fits a 3/8" bolt. The dimensions table on this page lists the inside diameter, outside diameter and thickness.

Do I need a washer?
A flat washer spreads the load, protects the surface and stops the nut or head from digging in. Use a stainless washer with stainless fasteners.

Should I use 18-8 or 316 stainless?
18-8 is fine for most outdoor and wet jobs. 316 stainless adds molybdenum for better resistance to salt water, chlorides and many chemicals, so it is the better choice for boats, docks, pools and coastal sites. Contact us for 316 stainless.

Free shipping on orders over $100, and orders placed before noon EST ship the same day. Purchase orders are accepted from government agencies, schools, hospitals, municipalities and companies with established credit with The Nutty Company, Inc.