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    20 Products

    Curved Spring Lock Washers

    Image of Product. Front orientation. Lock Washers. Curved Washer, Spring Lock Washer.
    The curvy, spring-like shape adds a small amount of tension to prevent nuts and screws from backing out due to mild vibration. These washers also flex slightly to compensate for uneven surfaces. While more secure than a standard flat washer, these have the least amount of gripping power of all our lock washers. They are best suited for electrical panels, light fixtures, and other light duty assemblies. These washers hold their shape when untightened, so you can reuse them a handful of times without losing strength.
    Steel—Best for dry environments since moisture will cause these washers to rust.
    For Screw
    Size
    ID,
    mm
    OD,
    mm
    Thk.,
    mm
    Overall
    Ht., mm
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Steel
    M8
    		7.414.01.62.8DIN 690550000000000000000
     

    Heavy-Vibration-Resistant Spring Lock Washers

    Image of Product. Front orientation. Lock Washers. Spring Lock Washer, Conical Washer.
    With a grip that's second only to wedge lock, these washers stop nuts and screws from wiggling loose under constant, vigorous vibration. They are ideal for engines, turbines, generators, and other heavy duty equipment. 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.
    Highly-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.
    Steel—Best for dry environments since moisture will cause these washers to rust.
    DIN 432—These washers have a small tab that presses up against the flats of your nut or screw for extra security.
    For Screw
    Size
    ID,
    mm
    OD,
    mm
    Thk.,
    mm
    Overall
    Ht., mm
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Highly-Corrosion-Resistant 316 Stainless Steel
    M20
    		21.042.01.64.5DIN 432100000000000000
    M22
    		23.050.01.66.5DIN 43210000000000000
    M24
    		25.050.01.66.5DIN 43210000000000000
    M27
    		28.058.01.69.5DIN 432100000000000000
    M30
    		31.063.01.69.5DIN 43210000000000000
     
    Steel
    M20
    		21.042.01.64.5DIN 43210000000000000
    M24
    		25.050.01.66.5DIN 43210000000000000
    M30
    		31.063.01.69.5DIN 43210000000000000
     

    Wave Spring Lock Washers

    Image of Product. Front orientation. Lock Washers. Wave Washer, Spring Lock Washer.
    The wavy shape flexes like a spring to keep nuts and screws secure on slightly uneven surfaces. These washers add a small amount of tension to stop fasteners from backing out due to mild vibration. While they don't hold as well as other lock washers, they do grip slightly better than curved washers. They work best in electrical panels, light fixtures, and other light duty assemblies. Since these washers hold their shape when untightened, you can reuse them a handful of times without losing strength.
    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.
    Black-Oxide Steel—Typically chosen for their appearance, these washers have a dark, matte coating that creates a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
    For Screw
    Size
    No. of
    Waves
    ID,
    mm
    OD,
    mm
    Thk.,
    mm
    Overall
    Ht., mm
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    M14
    		115.028.01.66.0DIN 137B10000000000000000
    M16
    		117.030.01.66.4DIN 137B100000000000000
    M18
    		119.034.01.66.6DIN 137B1000000000000000
    M20
    		121.036.01.67.4DIN 137B50000000000000
     
    Black-Oxide Steel
    M14
    		115.028.01.66.0DIN 137B2500000000000000
    M16
    		117.030.01.66.4DIN 137B2500000000000000
    M20
    		121.036.01.67.4DIN 137B100000000000000
     

    Plastic Washers

    Image of Product. Front orientation. Washers. Plastic Washers.
    All of these washers are lightweight, nonconductive, and naturally rust resistant. They are commonly used in electronics and automation applications to take the pressure off screws and nuts and protect mounting surfaces.
    High-Strength Glass-Filled Nylon—Stronger than plain nylon, but not quite as strong as PEEK. These washers will swell and weaken when exposed to moisture, so they are best for dry environments.
    Temp.
    Range
    For Screw
    Size
    ID,
    mm
    OD,
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    mm
    Min.
    Max.,
    ° F
    Color
    Pkg.
    Qty.
    Pkg.
    High-Strength Glass-Filled Nylon
    M6
    		6.412.51.6Not Rated220Black10000000000000000
    M6
    		6.412.51.6Not Rated220White100000000000000
    M8
    		8.4171.6Not Rated220Black50000000000000
    M8
    		8.4171.6Not Rated220White50000000000000
     
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