Best Lock Nuts 2026

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Last Updated - 27.03.2026

Best Choice

01

Vifmy

Vifmy 113pcs Locknuts Assortment Kit, 6#32 8#32 10#24 10#32 1/4-20 5/16-18 3/8-16 1/2-13 SAE Lock Nuts, 304 Stainless Steel Nylon Insert Hex Lock Nuts, Hex Drive
9.7

Exceptional

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27,31 €
02

GLARKS

glarks 175pcs Metric 304 Stainless Steel Nylon Lock Nut Assortment Kit - M3 M4 M5 M6 M8 M10 M12

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9.6

Exceptional

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5. Application: can be widely used in automotive, construction machinery, shipbuilding and etc.
4. Function: with captive undersized nylon washing machine creates friction with pairs of threads to prevent loosening, makes it better locking ability
3. Package: this set includes 7 sizes of M3 M4 M5 M6 M8 M10 M12 total 175pcs in a clear box
2. Material: made of high quality 304 stainless steel, strong and durable
1. Product type: high-quality nylon insert lock nuts

13,99 €
Value for Money

03

YIYICO

YIYICO Self-Locking Nuts Assortment Hex Nuts Locking Nuts 200 Pieces M3 M4 M5 M6 M8 M10 M12 Lock Nuts Stainless Steel Nut Set

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9.4

Excellent

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Widely used: the screw nut can be used for screwing on screws as well as threaded rods and head screws. Suitable for daily installation or repair of furniture, engines, automobiles, motorcycles, folding beds, cabinets, miners, engines, textile machinery, workshops, engines, etc.
Premium material: made of high-quality 304 stainless steel and nylon material, is of high hardness, not easy to deform, wear-resistant, and rustproof. One of the highest forms of corrosion resistant metals, making it last longer than other nuts on the market today. The nylon insert helps the nut lock more firmly and does not loosen.
Perfect design: the nylon insert is equipped with a thread to hold the lock nut and prevent loosening. Nylon insert is mainly used for pressure reduction and friction reduction, to avoid leaks and for pressure relief. The combination of nylon insert and hex nuts perfectly solves most problems in life.
Package includes: a total of 200 stainless steel nuts, M3 x 55, M4 x 45, M5 x 40, M6 x 30, M8 x 15, M10 x 10, M12 x 5, a storage box. The heavy duty polymer insert nuts are highly resistant to turning, so the locking nuts will not weaken and looser under the vibration and torque, which reduces the resistance of the shimmer.
Easy to use: the hex nut nuts with individual organiser compartments are designed for easy storage. The all-round transparent box makes it easy to see items inside, even when stacked, you can easily find the necessary parts in the storage box and do not lose them. and is convenient for daily classification and use.

9,99 €
04

RUGLAMZHIP

Pack of 200 M3 Nuts, Locking Nuts M3, Hexagonal Nuts DIN 985 Stainless Steel Nylon Self-Locking Nuts, Stop Nuts, Metric Clamping Nuts, Stop Nuts with Clamping Part, Lock Nuts Set

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9.1

Excellent

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Versatile: M3 stainless steel nuts are the ideal choice for applications where machines, vehicles or devices are exposed to constant movement or external forces. It is widely used in electrical appliances, precision machinery, computers, furniture, vehicles, aircraft and other fields.
Package Content 200pcs M3 stainless steel hex nuts in sufficient quantity. They prevent loosening, extend the life of parts and meet the requirements of different areas.
Nylon Lock Hex Nuts Design: The nylon insert in the nut creates friction with the screw thread, preventing loosening of the nut due to vibration and impact. This means that screw connections remain safe and reliable even in working environments with vibrations, shocks or load changes.
High load capacity: the transparent thread design of nut m3 stainless steel ensures even force distribution and thus prevents loosening. The high load capacity ensures the stability of screw connections even under high loads and high pressure.
Durable material: M3 nut set is made of high-quality 304 stainless steel. This is corrosion-resistant, rust-resistant, robust, hard and offers a long service life and stability. It is the ideal choice for industrial equipment and machinery.

5,99 €
05

Qeapug

Pack of 980 Locking Nuts with Flat Washers Assortment, Screw Locking Stainless Steel, Self-Locking Washers, Locking Washers, Hex Nuts - M2.5/M3/M4/M5/M6/M8/M10/M12

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9.0

Excellent

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Wide Applications The lock nut and washer kit is the perfect component for electrical connection of folding beds, cabinets, electric hair clippers, motors, textile machinery, household appliances, commercial appliances, cars and boats, etc.
Premium Material These locking nuts are made of excellent 304 stainless steel and nylon material, which is corrosion and rust resistant, not easy to damage and crack, sturdy and durable for long-term use.
Package Includes:In sizes M2.5/M3/M4/M5/M6/M8/M10/M12 in total 980pcs The locking nuts are all in the storage box, so you can easily find the size you want without losing them. This kit provides enough space to replace the locking washers and prevents screws from falling out and loosening.
Lock nuts: nylon inserts with lock nut can prevent loosening, available in 7 sizes: m3 x 30 pieces, m4 x 25 pieces, m5 x 25 pieces, m6 x 25 pieces, m8 x 12 pieces, m10 x 9 pieces, m12 x 6 pieces.
Flat washers: flat washers are mainly used for decompression and friction reduction, leakage prevention, insulation, etc. There are 9 types: M2 x 168 pieces, M2.5 x 168 pieces, M3 x 150 pieces, M4 x 140 pieces, M5 x 82 pieces. M6 x pieces. Pack of 60. M8 x 50 pieces. M10 x 20 pieces. M12 x 10 pieces.

10,99 €
06

Dreamark

Pack of 180 Locking Nuts Assortment Set, M3 M4 M5 M6 M8 Hex Nuts, Nuts Assortment 304 Stainless Steel, Hex Nuts Set, Lock Nuts for Screws and Threaded Rods

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8.9

Very Good

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Main highlights

Wide range of uses: whether for vehicle repairs, furniture construction or industrial machine projects - this lock nut set offers versatile applications. It is the perfect choice for projects that require a reliable and durable mounting solution.
Versatile size options: the 180-piece locking nut set contains the standard sizes M3, M4, M5, M6 and M8. This variety of nut assortment meets the requirements for DIY projects as well as professional applications and offers flexibility for different projects.
Premium stainless steel quality: made of robust 304 stainless steel, the nuts offer excellent corrosion and rust resistance. This stainless steel nut set ensures a long-lasting, reliable attachment in demanding environments such as construction projects and furniture assemblies.
Practical storage: the hexagonal nuts are organised in a transparent plastic box and sorted by size. This makes it easier to find and store the nuts neatly so that no parts are lost or messed up during work.
Easy to use: thanks to the precise thread design, the hex nuts can be quickly and easily attached with standard tools. The even power distribution ensures a stable fixation, which makes this screw nut set ideal for hobby hobbyists and professionals.

9,49 €
07

WZHUIDA

WZHUIDA 145 Piece Self-Locking Nuts Assortment Set, A2-70 Stainless Steel Locking Nuts Set, Lock Nuts, Nylon Self-Locking Hex Nuts M3 M4 M5 M6 M8 M10 DIN985 Stop Nuts

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8.8

Very Good

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Main highlights

【TRUSTED & EXPERIENCE】Our products are designed and manufactured by professional fastener manufacturers with over 15 years industry experience. Our fasteners are widely used in aerospace, high-speed railways, ships, automobiles, computers, furniture and other fields.
【Lock Nut Size】: 145pcs lock nuts, 50pcs M3 lock nuts, 30pcs M4 lock nuts, 25pcs M5 lock nuts, 25pcs M6 lock nuts, 10pcs M8 lock nuts, 5pcs M10 lock nuts.
【Good Storage & Sorting】: All screws, nuts and washers are packed in a sturdy, user-friendly plastic storage box, categorized and labeled so you can quickly find the size you need. To prevent the products from getting messed up or damaged during shipping, we have developed separate packaging for the smaller sizes and provided a sturdy cardboard outside the plastic box.
【Environmental Commitment】: As a socially responsible company, WZHUIDA is committed to sustainability. We have implemented various environmental measures to minimise our ecological footprint during the production process while offering sustainable product opportunities.
【Clean and Easy to Use】: Our screws are not greasy, which makes their handling easier and leaves less dirt in your work area.

7,99 €
08

Leryati

DIN985 Pack of 10 Hex Nuts M6, Leryati Locking Nuts Stainless Steel Standard A2 V2A M6 Nut, Self-Locking Nuts Stop Nuts, Hex Stainless Steel Nut Stop Nuts Lock Nuts Set

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8.5

Good

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Wide application: locking nut hex nut. The anti-vibration and anti-loosening performance is much higher than other anti-loosening devices, which can be used on indoor and outdoor decoration, steel, wood, it can also be used on aviation, automotive transport machines, electrical products and various types of machines.
Specification size: we offer you locking nut stainless steel 10 pieces M6, you can choose hex nut according to the screws or bolt size, and different sizes can meet your screw nut needs.
Practical functions: self-locking stainless steel nut. When used together with threaded screws and other connectors, the nylon ring will deform after locking, and the gap between the connectors at both ends is filled to prevent the screws from falling off and loosening to play a locking role.
High-quality material: self-locking nuts made of durable A2 V2A 304 stainless steel and nylon, hexagonal nuts surface is smooth with metallic shine that has good corrosion, rust and oxidation resistance. It can also be used indoors, outdoors and in damp areas.
Easy to use: the stainless steel locking nut easy to install can be easily installed in tight spaces. Torque wrench and screwdriver are enough to tighten the stop nut, it can be disassembled and used at any time.

5,49 €
09

ZerDans

Pack of 150 Hex Nuts M5, ZerDans Locking Nuts Stainless Steel Standard A2 V2A M5 Nut, Self-Locking Nuts Stop Nuts, Hexagonal Stainless Steel Nut Stop Nuts Lock Nuts Set

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8.3

Good

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Provide convenient storage box: ZerDans 150 pieces locking nuts M5 are stored in a plastic box with size and quantity labels, which is convenient to carry and use. We also thickened and reinforced the box for high durability and resistance to the wear and tear of daily use. The box is clearly labelled so you can quickly and accurately find what you need without having to search for product information for a long time.
Nylon insert design: these hex nuts have built-in nylon inserts, a design that provides additional loosening protection by using the elasticity of the nylon material to increase the friction between the nut and the screw. Due to the high loosening resistance of the nylon inserts, they can effectively resist loosening caused by vibration or impact, ensuring the reliability and stability of the connection.
High-quality M5 self-locking nut set: ZerDans hexagonal nuts M5 are fasteners made of stainless steel A2 V2A with excellent corrosion and rust resistance, suitable for outdoor use or in wet environments, able to withstand a variety of corrosive elements. M4 locking nuts also have high strength, can withstand large mechanical loads and are suitable for applications requiring high strength connections.
After sales service: quality problems occur within 1 year replacement, lifetime warranty. If you encounter any problems after purchasing our products, please contact us by email and we will solve your problems as soon as possible.
A wide range of applications: we offer 150 pieces frequently used M5 hex nuts, enough quantity to meet your long-term use. ZerDans 304 stainless steel locking nuts are suitable for environments with high vibration or applications that require long-lasting fastening force, such as the automotive, engineering, electronics, marine and construction industries, especially where a reliable anti-loosen solution is required.

6,99 €
10

Pyroclasia

M3 Nuts Self-Locking Nuts Carbon Steel Nut M3 Pack of 55 DIN985 Black Locking Nuts Hex Nuts Niro Hex Nut Stop Nuts Self-Locking Lock Nuts Set

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8.2

Good

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Main highlights

Widely used: Hex nut M3 nuts not only have excellent anti-loose performance and a built-in nylon ring, hex nuts are also widely used in various areas such as industry, steel industry, model making, indoor and outdoor decoration, as well as mechanical engineering, aerospace, vehicle construction and electronics manufacturing. Stop nuts are also suitable for hobby hobbyists and home use to meet the fixing needs in different scenarios.
Quality material: Our M3 self-locking nuts are made of high-quality carbon steel and nylon, hardened to ensure clear threads, the M3 self-locking nuts have a smooth, burr-free surface, excellent corrosion resistance, rust resistance and oxidation resistance.
Package contents: This self-locking nut set contains 55 pieces M3 nuts self-locking carbon steel DIN 985 black, which is enough quantity to meet your need for screws or screw accessories.
Nylon anti-loosening design: the hex nut has built-in nylon inserts that prevent screws or bolts from loosening due to vibrations. The nylon material inside the M3 nuts can fill the gap between the connecting parts, effectively preventing loosening of the screw and ensuring a strong connection.
Easy to use and firm fit: The hex nuts we offer have a standard metric female thread that is suitable for tightening and loosening with wrenches, sockets or torque wrenches. The self-locking nut M3 can be used in perfect cooperation with M3 bolts or screws to ensure the tightening effect.

5,99 €