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.
Looking for the best Lock Washers?
Discover now our comparison of the best Lock Washers. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Lock Washers are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Lock Washers in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.
No. 1
Vifmy SAE Spring Lock Washers Assortment Kit(910 Pack), #4#6#8#10#12 1/4" 5/16" 3/8" 1/2" SAE Split Lock...
- 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
No. 2
binifiMux 1150pcs M2 M2.5 M3 M4 M5 M6 M8 M10 M12 Spring Lock Washers Assortment Kit, 304 Stainless Steel
- Name: Split lock washers assortment kit;
- Include size: M2, M2.5, M3, M4, M5, M6, M8, M10, M12;
- If you receive defect units, please contact my team first for satisfying your needs;
- Features: anti-rust, corrosion resistance, strong strength.
- Commonly used together with flat washers to furthur fasten the screws / bolts by more friction force from split lock washers.
No. 3
Vifmy Spring Lock Washers Assortment Kit(1000 Pack), M2 M2.5 M3 M4 M5 M6 M8 M10 M12 Metric Split Lock Washer...
- 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
No. 4
Zxglxinyao 900 PCS Stainless Steel Spring Lock Washer, Split Lock Washer, Split Ring Washer Bolt Screw Spring...
- Exquisite Material: These lock washers are made of high-quality stainless steel, which is corrosion-resistant, rust-resistant, sturdy, and can maintain good performance in harsh environments and is durable for long time use.
- Split Lock Washer: Split lock washer provides a round bearing surface with offset open ends to aid in biting into mating material, axial flexibility protects fastening components from loosening due to vibration, provided when tightening under nut lock...
- Spring Lock Washers: Split ring washers use friction to prevent bolted joints from loosening. Designed a ring that has been split and twisted, creating two edges, and installed between the bolt head/nut and mating surface.
- Wide Range of Applications: Suitable for indoor and outdoor use, ideal for distributing faster loads, suitable for installations where two parts are bolted together and there is concern about corrosion or vibration loosening, great for applications...
- Package Includes: You will receive 200 pcs m2 (2#), 150 pcs m2.5 (2#), 150 pcs m3 (1/8), 150 pcs m4 (5/32), 100 pcs m5 (3/16) , 60 pcs m6 (1/4), 60 pcs m8 (5/16), 20 pcs m10 (3/8), 10 pcs m12 (1/2), 900 pcs in total, sufficient quantity and rich size to...
No. 5
Vifmy Metric & SAE Spring Lock Washers Assortment Kit(1780Pcs), M2 M2.5 M3 M4 M5 M6 M8 M10 M...
- 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
No. 6
1000 Pcs Spring Lock Washers Assortment Kit – 9 SAE Sizes Split Lock Washers, 304 Stainless Steel Washers...
- 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
No. 7
Vifmy External Tooth Lock Washers Assortment Kit(500 Pack),M2.5 M3 M4 M5 M6 M8 M10 M12 Metric 304 Stainless...
- 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...
No. 8
Vifmy 500PCS Internal Tooth Star Lock Washers, M2.5 M3 M4 M5 M6 M8 M10 M12 Push Nuts Assortment, Quick Speed...
- Speed Locking Washers Size: Speed locking washers assortment kit contains 8 size types of washers, which are m2.5-8(100pcs),m3-9(100pcs),m4-12(70pcs),m5-14(60pcs),m6-16(60pcs),m8-18(50pcs),m10-20(30pcs),m12-25(30pcs),8 different sizes to meet different...
- Steel Star Locking Washer: The push nuts assortment are made of high quality carbon steel material, which has high strength and can withstand certain loads and impacts, and can ensure the stability and working life of the star locking washer
- Star Locking Washer Function: The starlock washers are one of the indispensable elements in most mechanical equipment, it has a variety of roles in fixing, supporting and damping. It uses spring pressure to regulate reinforced shaped objects and is used...
- Wide Application: internal tooth lock washer is widely used in various fields, especially in machinery manufacturing, automobile manufacturing, shipbuilding, aerospace, rail transport and so on
- Convenient Storage: Each of the 8 different sizes of push on locking washer are individually stowed by type in an easy to carry clear case. Easy to store and use, so that the star locking washer will not be lost or mixed up during use
No. 9
Vifmy Internal Tooth Star Lock Washers Assortment Kit(500 Pack), M2.5 M3 M4 M5 M6 M8 M10 M12 Metric...
- 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...
SaleNo. 10
Aienxn 1000PCS Spring Lock Washers Assortment Kit, 9 Metric Sizes -M2, M2.5, M3, M4, M5, M6, M8, M10, M...
- Premium Quality: Aienxn lock washers and flat washers are made of 304 stainless steel
- Features: Aienxn Split lock washers and flat washers are not easy to deform, has high strength, corrosion resistance and rust prevention, and can be used for a long time in harsh environments such as high temperature, cold and high humidity areas
- Wide Application: Flat washers and spring lock washers are designed for electrical connections of household and commercial appliances, automobiles and ships with threaded/bolted connections
- Size: The spring lock washers and flat washers both have 9 sizes, total 1000 pcs, M2, M2.5, M3, M4, M5, M6, M8, M10, M12, the most commonly used stainless steel gasket is packed in a plastic box, and different sizes can meet your different needs
- Compatible: Aienxn spring lock washers and flat washers are highly compatible with screws, nuts and bolts of the same size, and has a solid supporting surface to prevent the nut/bolt head from tearing the material
- Timely reply: If you have any questions, please contact us by email and we will reply you within 24 hours
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Last update on 2026-04-10 / 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.
