Washers

300+ products

Expected delivery: Wed, Nov 18

Washers spread the load under a bolt head or nut, protect the surface, and in some cases help keep a joint tight or sealed. This section covers SAE and USS flat washers, hardened flat washers, fender washers, split lock washers, internal and external tooth lock washers, bonded sealing washers with a rubber backing, and nylon washers. Materials include zinc-plated and plain steel, hardened steel, galvanized steel, stainless steel and nylon.

What to check before you order

SAE or USS pattern. SAE flat washers have a smaller outside diameter and a closer fit on the bolt. USS washers are larger and thicker, a common choice for wood and construction work.
Hardness. High-strength bolts such as Grade 8 should use hardened flat washers so the washer does not dish under load.
Fender washers. Their large outside diameter spreads load on thin sheet metal, plastic and slotted holes.
Sealing. Bonded sealing washers are used on roofing and siding screws and on fittings where water or fluid must be kept out.
Material match. Use stainless washers with stainless bolts to avoid corrosion between metals.

Shop matching nuts and hex bolts and cap screws, or see all fasteners.

Common questions

What size washer do I need for a 1/2 in. bolt?

Washers are sold by the nominal bolt size they fit, so a 1/2 in. bolt takes a 1/2 in. washer, which has a slightly larger hole than the bolt. The SAE or USS pattern then sets the outside diameter and thickness.

Where does a split lock washer go?

Place a split lock washer directly under the nut or screw head that is being turned. If a flat washer is also used, the flat washer sits against the part and the lock washer goes between it and the nut or head.

Washers: page 5

Approved Vendor 5/8" Solid Brass Flat Washers SKU 25648 $4.57
Approved Vendor 5/8" Stainless Steel Split Lock Washers SKU 1938 $0.65
Approved Vendor 5/8" Steel Internal Tooth Lock Washer Zinc SKU 25650 $0.30
Approved Vendor 5/8" USS Grade 8 Extra Thick Flat Washers Zinc Yellow SKU 25657 $3.14
Approved Vendor 5/8" USS Grade 8 Flat Washers Zinc Yellow SKU 25658 $1.08
Approved Vendor 5/8" USS Grade L-9 Flat Washers USA Zinc Yellow SKU 25659 $5.52
Approved Vendor 5/8" USS Low Carbon Flat Washers Zinc SKU 25660 $0.66
Approved Vendor 5/8"x2 1/2" Round Plate Washer Hot Dipped Galvanized SKU 26044 $4.93
Approved Vendor 5/8"x2 1/2" Round Plate Washer Plain SKU 26045 $4.33
Approved Vendor 7/16" 18-8 Stainless Steel Flat Washers SKU 1068 $0.35
Approved Vendor 7/16" Alloy Split Lock Washers Plain SKU 26359 $0.15
Approved Vendor 7/16" Alloy Split Lock Washers Zinc Yellow SKU 26360 $0.25
Approved Vendor 7/16" Alloy Split Lock Washers Zinc Yellow (USA Made) SKU 26800 $0.32
Approved Vendor 7/16" Grade 8 High Collar Split Lock Washers Zinc Yellow SKU 27325 $0.28
Approved Vendor 7/16" Medium Split Lock Washers Zinc SKU 26717 $0.18
Approved Vendor 7/16" SAE Grade 8 Extra Thick Flat Washers Zinc Yellow SKU 26753 $0.55
Approved Vendor 7/16" SAE Grade 8 Flat Washers Plain SKU 26954 $0.13
Approved Vendor 7/16" SAE Grade 8 Flat Washers Zinc Yellow SKU 26664 $0.12
Approved Vendor 7/16" SAE Grade 8 Flat Washers Zinc Yellow (USA Made) SKU 26685 $0.36
Approved Vendor 7/16" SAE Low Carbon Flat Washers Galvanized SKU 27381 $0.19
Approved Vendor 7/16" SAE Low Carbon Flat Washers Zinc SKU 26679 $0.14
Approved Vendor 7/16" Stainless Steel Split Lock Washers SKU 1936 $0.34
Approved Vendor 7/16" Steel External Tooth Lock Washer Zinc SKU 28935 $0.17
Approved Vendor 7/16" USS Grade 8 Extra Thick Flat Washers Zinc Yellow SKU 27256 $0.72
Approved Vendor 7/16" USS Grade 8 Flat Washers Zinc Yellow SKU 26776 $0.37
Approved Vendor 7/16" USS Grade L-9 Flat Washers USA Zinc Yellow SKU 28936 $1.27
Approved Vendor 7/16" USS Low Carbon Flat Washers Zinc SKU 26779 $0.27
Approved Vendor 7/8" 18-8 Stainless Steel Flat Washers SKU 1072 $2.55
Approved Vendor 7/8" Alloy Split Lock Washers Plain SKU 26363 $0.78
Approved Vendor 7/8" Alloy Split Lock Washers Zinc Yellow SKU 26364 $1.11
Approved Vendor 7/8" SAE Grade 8 Flat Washers Zinc Yellow SKU 27139 $0.97
Approved Vendor 7/8" SAE Low Carbon Flat Washers Galvanized SKU 28990 $1.11
Approved Vendor 7/8" SAE Low Carbon Flat Washers Zinc SKU 27498 $0.80
Approved Vendor 9/16" Alloy Split Lock Washers Plain SKU 26361 $0.29
Approved Vendor 9/16" Alloy Split Lock Washers Zinc Yellow SKU 26362 $0.46
Approved Vendor 9/16" Alloy Split Lock Washers Zinc Yellow (USA Made) SKU 27443 $0.77
Approved Vendor 9/16" Medium Split Lock Washers Zinc SKU 27259 $0.39
Approved Vendor 9/16" SAE Grade 8 Extra Thick Flat Washers Zinc Yellow SKU 27000 $1.12
Approved Vendor 9/16" SAE Grade 8 Flat Washers Zinc Yellow SKU 26710 $0.32
Approved Vendor 9/16" SAE Grade 8 Flat Washers Zinc Yellow (USA Made) SKU 26925 $1.03
Approved Vendor 9/16" SAE Grade L-9 Flat Washers USA Zinc Yellow SKU 28937 $2.81
Approved Vendor 9/16" SAE Low Carbon Flat Washers Zinc SKU 26995 $0.28
Approved Vendor 9/16" USS Grade 8 Flat Washers Zinc Yellow SKU 27260 $1.05
Approved Vendor 9/16" USS Low Carbon Flat Washers Zinc SKU 27261 $0.47
3M Cartridge Washer w-2923 SKU 142-W-2923 $10.41
Dewalt 2600 PSI Jobsitepressure Washer SKU 115-DWPW2600 $533.98
Victor Friction Washer SKU 341-1408-0033 $2.27
Best Welds Insulator Shock Washer Miller SKU 900-169-730 $3.77