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Washer Designation
Adhesive Thickness
Serration Location
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For Use With
DFARS Specialty Metals
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Minimum Temperature
Backing Type
Adhesive-Back Washers
Stick these washers on your mounting surface, and they won't slip out of position while you fasten. They take the pressure off screws and nuts to protect your material.
Stainless Steel
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Super-Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these washers won't degrade when exposed to harsh weather, salt water, and most chemicals.
Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws
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Stop socket head screws from wiggling loose on equipment with constant, vigorous vibration, such as engines, turbines, and generators. These washers have a small diameter to fit under screws with narrow heads. Similar to a spring, they flatten under pressure to add tension between mating surfaces. As long as the washers aren't deformed or otherwise damaged, you can reuse them indefinitely without losing locking strength. Also known as conical washers and Belleville washers.
Stack multiple washers in the same direction to double or triple how much weight they can bear. Stack washers in opposite directions for better deflection, which means they compress further and withstand more shock and movement without loosening.
18-8 Stainless Steel—The choice for wet and outdoor environments, these washers won't rust when exposed to moisture. However, they can't hold up to the harsh chemicals that 316 stainless steel can.
Steel—Best for dry environments since moisture will cause these washers to rust.
Top-and-Bottom Serration—Adds friction for extra gripping power.
For Screw Size | ID | OD | Thk. | Overall Ht. | Serration Location | Pkg. Qty. | Pkg. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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18-8 Stainless Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
9/16", M14 | 0.591" | 0.866" | 0.059" | 0.091" | Top and Bottom | 1 | 000000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
5/8", M16 | 0.669" | 0.945" | 0.059" | 0.091" | Top and Bottom | 1 | 000000000 | 0000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
M18 | 0.748" | 1.063" | 0.059" | 0.091" | Top and Bottom | 1 | 000000000 | 0000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
M20 | 0.827" | 1.181" | 0.059" | 0.098" | Top and Bottom | 1 | 000000000 | 0000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3/4", M19 | 0.787" | 1.181" | 0.059" | 0.098" | Top and Bottom | 25 | 000000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
7/8", M22 | 0.906" | 1.299" | 0.059" | 0.106" | Top and Bottom | 20 | 000000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
M18 | 0.748" | 1.063" | 0.059" | 0.091" | Top and Bottom | 10 | 000000000 | 0000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
M20 | 0.827" | 1.181" | 0.059" | 0.098" | Top and Bottom | 10 | 000000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||