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Lock washers are essential components for preventing fasteners from loosening due to vibration or thermal expansion. Choosing the correct type and size ensures the integrity and safety of your assemblies. Understanding the nuances of different lock washer designs will help you make an informed decision for your specific application, guaranteeing a secure and reliable connection.
Internal Tooth Lock Washer: The metric internal tooth star lock washers assortment kit contains 8 sizes 500 pcs, which are m2.5(100 pcs),m3(100 pcs),m4(100 pcs),m5(70 pcs),m6(50 pcs),m8(30 pcs),m10(30 pcs),m12(20 pcs) ,8 different sizes of internal star...
304 Stainless Steel: 304 Stainless steel internal tooth washers are made of high-strength materials with good corrosion resistance and long service life. Compared to galvanised materials, the oxidation resistance, corrosion resistance and rust resistance...
Easy Operation: Internal tooth star washers are mainly used for nuts and bolts from rotating and loosening due to vibration and friction, and play a role in preventing loosening and fixing objects to ensure the stability of machines
Convenient Storage: Each of the 8 different sizes of internal tooth lock washer are individually stowed by type in an easy to carry clear case.Easy to store and use,so that the rivnut will not be lost or mixed up during use
Wide Application: Internal tooth washer are highly compatible with screws, nuts and bolts of the same size and can be used to connect moving parts or to prevent loose connections, such as in furniture repair, outdoor construction, and electrical...
Spring Lock Washers: The metric spring lock washers assortment kit contains 9 sizes 1000 pcs, which are m2(200 pcs),m2.5(200 pcs),m3(200 pcs),m4(180 pcs),m5(80 pcs),m6(60 pcs),m8(50 pcs),m10(20 pcs),m12(10 pcs) ,9 different sizes of lock washers From...
304 Stainless Steel: 304 Stainless steel split lock washer are made of high-strength materials with good corrosion resistance and long service life. Compared to galvanised materials, the oxidation resistance, corrosion resistance and rust resistance are...
Split Lock Washer Function: Split washer are mainly used for nuts, bolts and screws from rotating and loosening due to vibration and friction, and play a role in preventing loosening and fixing objects to ensure the stability of machines
Convenient Storage: Each of the 9 different sizes of spring lock washers are individually stowed by type in an easy to carry clear case.Easy to store and use,so that the spring lock washers will not be lost or mixed up during use
Wide Application: Spring washers are highly compatible with screws, nuts and bolts of the same size and can be used to connect moving parts or to prevent loose connections, such as in furniture repair, outdoor construction, and electrical maintenance
【SPRING LOCK WASHER】This kit includes 530pcs high-quality metric spring lock washers, organized into 12 sizes: M3(80pcs), M4(80pcs), M5(60pcs), M6(50pcs), M8(25pcs), M10(10pcs), 6#(80pcs), 8#(60pcs), 10#(40pcs), 1/4"(40pcs), 5/16"(15pcs), 3/8(10pcs...
【PREMIUM 304 STAINLESS STEEL】Crafted from 304 stainless steel, these split lock washers are engineered for superior resistance to rust, corrosion, and oxidation. They are ideal for demanding indoor and outdoor applications, ensuring long-term...
【SPLIT LOCK WASHER ACTION】These lock washers are engineered to prevent loosening of nuts, bolts, and screws caused by vibration. They apply continuous tension to maintain clamp force, ensuring the stability and assembly integrity of your machines and...
【VERSATILE USE】 Spring washers are highly compatible with standard metric screws, nuts, and bolts. This makes them ideal for a wide range of applications, including machinery, furniture repair, outdoor construction, automotive, and electrical...
【CONVENIENT STORAGE CASE】All sizes of spring lock washers are individually stowed in a durable, clear storage case. This organization prevents loss and mixing, ensuring the right washer is always at hand.
Spring Lock Washer Assortment Kit: SAE spring lock washer set includes 1000 pieces in 9 different sizes (#4, #6, #8, #10, #12, 1/4", 5/16", 3/8", 1/2"), covering a wide range of fastening needs for both daily and professional use
304 Stainless Steel Material: These split lock washers are made of high-quality 304 stainless steel, which has excellent strength, rust resistance, and long-term durability. Ideal for indoor and outdoor use, they can maintain reliable performance even in...
Split Lock Washer Function: Split lock washers use spring tension to prevent nuts and bolts from loosening due to vibration or impact, ensuring a firm hold and stable operation of your equipment
Wide Application: Spring washers are designed to be highly compatible with standard-sized screws, nuts, and bolts, providing reliable fastening in harsh environments. Ideal for mechanical assembly, furniture repair, outdoor construction, electrical...
Convenient Storage: Spring lock washers come sorted in a clear, labeled storage box for quick access and easy organization, helping you avoid loss or mix-ups during use
Package Contents: You will receive 50 pieces of star-shaped locking washers with inner teeth. These include 10 pieces of M2x6mm, 10 pieces of M2.5x8mm, 10 pieces of M3x10mm, 10 pieces of M4x12mm, and 10 pieces of M5x14mm. Different size combinations can...
Preferred Material: The washer is made of high-quality 65mn metal steel material, which has excellent corrosion resistance and rust resistance, is durable, not easy to deform, and has a longer service life.Easy to install and use
Widely Used: Push nuts are widely used in shock absorption and insulation in various fields such as machinery and equipment, electronic equipment, automobiles, sports equipment, industrial production, etc.
Function: It provides excellent spring force between the fastener head and the substrate. The grip is very strong and can be used to fix cars, strollers, grills, chairs and other items.
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Spring Lock Washers: The metric sae spring lock washers assortment kit contains 18 sizes 1780 pcs, which are M2(200 pcs),M2.5(200 pcs),M3(200 pcs),M4(180 pcs),M5(100 pcs),M6(100 pcs),M8(80 pcs),M10(40 pcs),M12(20 pcs) #4(100pcs) #6(100 pcs) #8(100 pcs...
304 Stainless Steel: 304 Stainless steel split lock washer are made of high-strength materials with good corrosion resistance and long service life. Compared to galvanised materials, the oxidation resistance, corrosion resistance and rust resistance are...
Split Lock Washer Function: Split washer are mainly used for nuts, bolts and screws from rotating and loosening due to vibration and friction, and play a role in preventing loosening and fixing objects to ensure the stability of machines
Convenient Storage: Each of the 18 different sizes of spring lock washers are individually stowed by type in an easy to carry clear case. Easy to store and use, so that the rivnut will not be lost or mixed up during use
Wide Application: Spring washers are highly compatible with screws, nuts and bolts of the same size and can be used to connect moving parts or to prevent loose connections, such as in furniture repair, outdoor construction, and electrical maintenance
Spring Lock Washers: The sae spring lock washers assortment kit contains 9 sizes 910 pcs, which are #4(200 pcs) #6(200 pcs) #8(200 pcs) #10(130pcs) #12(80 pcs) 1/4"(44 pcs) 5/16"(36 pcs) 3/8"(14 pcs) 1/2"(6 pcs), 9 different sizes of lock washers from...
304 Stainless Steel: 304 Stainless steel split lock washer are made of high-strength materials with good corrosion resistance and long service life. Compared to galvanised materials, the oxidation resistance, corrosion resistance and rust resistance are...
Split Lock Washer Function: Split washer are mainly used for nuts, bolts and screws from rotating and loosening due to vibration and friction, and play a role in preventing loosening and fixing objects to ensure the stability of machines
Convenient Storage: Each of the 9 different sizes of spring lock washers are individually stowed by type in an easy to carry clear case. Easy to store and use,so that the rivnut will not be lost or mixed up during use
Wide Application: Spring washers are highly compatible with screws, nuts and bolts of the same size and can be used to connect moving parts or to prevent loose connections, such as in furniture repair, outdoor construction, and electrical maintenance
External Tooth Lock Washer: The metric external tooth star lock washers assortment kit contains 8 sizes 500 pcs, which are m2.5(100 pcs),m3(100 pcs),m4(100 pcs),m5(70 pcs),m6(50 pcs),m8(30 pcs),m10(30 pcs),m12(20 pcs) ,8 different sizes of external star...
304 Stainless Steel: 304 Stainless steel external washers are made of high-strength materials with good corrosion resistance and long service life. Compared to galvanised materials, the oxidation resistance, corrosion resistance and rust resistance are...
Easy Operation: Internal tooth star washers are mainly used for nuts and bolts from rotating and loosening due to vibration and friction, and play a role in preventing loosening and fixing objects to ensure the stability of machines
Convenient Storage: Each of the 8 different sizes of external tooth lock washer are individually stowed by type in an easy to carry clear case.Easy to store and use,so that the rivnut will not be lost or mixed up during use
Wide Application: External tooth washer are highly compatible with screws, nuts and bolts of the same size and can be used to connect moving parts or to prevent loose connections, such as in furniture repair, outdoor construction, and electrical...
External Tooth Lock Washers Material: Made of 304 stainless steel, with good corrosion resistance and long service life. Compared with galvanized materials, it has stronger oxidation resistance, corrosion resistance and rust resistance, and the service...
Widely used: the internal star washers is matched with the same type of screws, nuts and bolts, which can be used to connect moving parts or prevent loose connection, such as shock absorption and insulation in furniture maintenance, outdoor construction...
550pcs internal lock washers is packed in a transparent box, with clear model classification, easy carrying and convenient storage, and the box can be reused.
550pcs internal lock washers is packed in a transparent box, with clear model classification, easy carrying and convenient storage, and the box can be reused.
Last update on 2026-07-16 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Lock Washers
Types of Lock Washers
Split Lock Washers: These are the most common type, featuring a split in their circular shape. When compressed, the split ends dig into the bearing surfaces of both the fastener and the work surface, creating friction to resist loosening. They are versatile and suitable for a wide range of applications.
Tooth Lock Washers: Available in internal, external, and countersunk tooth designs, these washers have teeth that extend inward or outward to bite into the fastener head or the mating surface. They provide a strong locking action, especially in applications with significant vibration. External tooth washers are good for wider bearing surfaces, while internal tooth washers fit snugly around bolt heads.
Nord-Lock Washers: A more advanced locking system, Nord-Lock washers consist of two matched washers with cams on one side and radial ribs on the other. When tightened, the cams move against each other, creating a tension that prevents loosening. They are highly effective in preventing vibration-induced loosening and are often used in critical infrastructure and heavy machinery.
Material Considerations
Lock washers are available in various materials, each offering different strengths and corrosion resistance. Common materials include zinc-plated steel for general use, stainless steel for corrosion resistance in outdoor or wet environments, and brass for non-sparking applications. Consider the environmental conditions and the load requirements of your project when selecting a material.
Size and Fit
The size of a lock washer is determined by the fastener it will be used with. It's crucial to select a washer that matches the nominal diameter of the bolt or screw. For split and tooth lock washers, ensure the inner diameter is slightly smaller than the bolt diameter to allow for a snug fit.
Frequently Asked Questions
What is the primary function of a lock washer?
The primary function of a lock washer is to prevent fasteners, such as bolts and nuts, from loosening. They achieve this by creating friction between the fastener and the bearing surface, resisting rotational movement caused by vibration or thermal changes.
Are split lock washers effective in all situations?
Split lock washers are effective in many common applications, especially those with moderate vibration. However, for extremely high vibration or critical load applications, more robust solutions like Nord-Lock washers might be necessary.
How do I determine the correct size lock washer?
The size of a lock washer is designated by the size of the bolt or screw it is intended to be used with. Always match the washer's nominal size to the fastener's diameter to ensure a proper fit and effective locking action.
Can I reuse lock washers?
While some lock washers can be reused, their effectiveness may diminish with each use, particularly split lock washers which can deform. For critical applications where reliability is paramount, it's often recommended to use new washers.
What is the difference between internal and external tooth lock washers?
External tooth lock washers have teeth that extend outward to grip the surface of the material being fastened, while internal tooth lock washers have teeth that grip the underside of the bolt or nut head. External teeth are better for wider bearing surfaces, while internal teeth provide a tighter fit around the fastener.
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