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    21 Products

    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.
    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.
    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.
    High-Strength 17-7 PH Stainless Steel—The strongest stainless steel washers we offer, these are comparable to high-strength Grade 8 steel. They won’t rust in wet and outdoor environments, but they can’t handle the harsh chemicals that 316 stainless steel can.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Phosphate-Coated Steel—Paint adheres evenly to the surface of these washers, so you can add your own decorative finish. They are more durable than zinc-plated steel washers to withstand wet and outdoor environments. However, they won't hold up to the harsh chemicals that stainless steel can.
    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.
    18-8 Stainless Steel
    M5
    5.311.01.21.6DIN 67962591477A123000000
     
    Super-Corrosion-Resistant 316 Stainless Steel
    M5
    5.311.01.21.6DIN 67961093237A10400000
    M12
    13.030.01.24.5DIN 4321097471A12500000
    M14
    15.033.01.24.5DIN 432597471A12600000
    M16
    17.036.01.24.5DIN 432597471A12700000
     
    High-Strength 17-7 PH Stainless Steel
    M5
    5.311.01.21.6DIN 6796592471A17000000
     
    Zinc-Plated Steel
    M5
    5.311.01.21.6DIN 67965095221A1070000
     
    Phosphate-Coated Steel
    M5
    5.311.01.21.6DIN 679610095221A20300000
     
    Steel
    M5
    5.311.01.21.6DIN 679610093497A15000000
    M12
    13.030.01.24.5DIN 432597471A10600000
    M14
    15.033.01.24.5DIN 432197471A1070000
    M16
    17.036.01.24.5DIN 432197471A1080000
     

    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.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    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.
    Super-Corrosion-Resistant Phosphor Bronze—Stronger and more wear resistant than silicon bronze, but with the same excellent corrosion resistance. These washers won't rust or deteriorate when submerged in salt water, so they're a good fit for marine environments.
    DIN 128B—These washers have split ends that bite into your material surface for a tighter hold than other wave washers.
    For Screw
    Size
    No. of
    Waves
    ID,
    mm
    OD,
    mm
    Thk.,
    mm
    Overall
    Ht., mm
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    M6
    16.511.81.22.2DIN 128B2597093A17600000
    M12
    113.024.01.25.0DIN 137B1092168A1130000
     
    Zinc-Plated Steel
    M6
    16.111.81.22.0DIN 128B10097093A15800000
     
    Black-Oxide Steel
    M12
    113.024.01.25.0DIN 137B2590504A1180000
     
    Super-Corrosion-Resistant Phosphor Bronze
    M12
    113.024.01.25.0DIN 137B190394A1170000
     

    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.
    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.
    Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
    Zinc-Yellow-Chromate-Plated Steel—With the same corrosion resistance as zinc-plated steel, these withstand occasional exposure to moisture.
    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.
    DIN 128A—These washers have split ends that bite into your material surface for a tighter hold than other curved washers.
    For Screw
    Size
    ID,
    mm
    OD,
    mm
    Thk.,
    mm
    Overall
    Ht., mm
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    18-8 Stainless Steel
    M6
    6.111.81.22.0DIN 128A10097093A143000000
     
    Zinc-Plated Steel
    M6
    6.111.81.22.0DIN 128A10097093A12600000
     
    Zinc-Yellow-Chromate-Plated Steel
    M6
    6.111.81.22DIN 128A10096982A1410000
     
    Black-Oxide Steel
    M6
    6.111.81.22.0DIN 128A5097093A1140000
     
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