Best Lock Nuts 2025

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Last Updated - 27.07.2025

Best Choice

01

WZHUIDA

WZHUIDA 430 Pieces Self-Locking Nuts and Hex Nuts Assortment, Stainless Steel Locking Nuts Set, Lock Nuts Hexagonal Screw Nuts, M2 M3 M4 M5 M6 M8 M10 M12 DIN985 DIN934

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9.9

Exceptional

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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.
【Size of hex nuts and lock nuts】: 430 pieces hex nuts and lock nuts set. 293 pieces hex nuts, 63 pieces M2 hex nuts, 80 pieces M3 hex nuts, 65 pieces M4 hex nuts, 40 pieces M5 hex nuts, 25 pieces M6 hex nuts, 12 pieces M8 hex nuts, 5 pieces M10 hex nuts, 3 pieces M12 hex nuts. 137 pieces lock nuts, 35 pieces M3 lock nuts, 30 pieces M4 lock nuts, 30 pieces M5 lock nuts, 25 pieces M6 lock nuts, 10 pieces M8 lock nuts, 4 pieces M10 lock nuts, 3 pieces M12 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.

14,97 €
02

Zhujiehigh

325 Piece Hex Nut Set, Locking Nuts, Self-Locking Nuts, Screw Nuts, Stop Nuts, Lock Nuts Set, Hexagonal Nut Assortment Set for Thread Inserts, M3 M4 M5 M6 M8 M10 M12

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9.8

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

The package includes: total 325 pieces, quantity and size include: 100 pieces m3, 60 pieces m4, 60 pieces m5, 50 pieces m6, 30 pieces m8, 20 pieces m10, 5 pieces m12, sufficient quantity and rich sizes to meet multiple scenes and field use requirements.
Nylon Insert Design The design of the nylon insert can increase the friction between nylon and thread to prevent loosening caused by vibration, fix it more firmly and prevent the nut from loosening under the action of vibration and torque.
Multi-scene application: suitable for various precision machines, security instruments, electronic products, household appliances, communication products, faucets, locks, lamps and other fields. Suitable for professionals, DIY enthusiasts, hobbyists, carpenters, landlords, maintenance workers, etc.
Hexagonal locking nut: self-locking nuts can replace the lock washer to prevent the bolt from being exposed and to prevent the accidentally moved bolt from falling off. It has a strong anti-twist lock and ensures a firm fixation as well as better safety and stability.
Durable & Sturdy Material The hex nut set is made of high quality stainless steel, with exquisite craftsmanship, not easily deformed, not easily broken, corrosion resistant, rust resistant, high strength, high hardness and long lasting durability and stability.

11,99 €
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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9.6

Exceptional

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

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.

10,99 €
04

Connex

Connex DP8500111 Locking Nut Assortment 120 Pieces – Various Sizes in Set (M3, M4, M5, M6, M8, M10) – Galvanised – Pre-sorted in Practical Plastic Box / Locking Nuts / Assortment Box

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9.5

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Tidy and clear storage
Suitable for securing screw connections
Quick sorting after use
Optimal equipment for home and workshop
Housed in a practical and reusable transparent box
Compact size is easy to store

3,49 €
05

bayidun

341 Piece Hex Nuts Assortment Set, Self-Locking Lock Nuts, Clamping Nuts, Stainless Steel Screw Locking Nuts, M2/M2.5/M3/M4/M5/M6/M8/M10/M12

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9.4

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide applications: locking nuts are widely used for daily installation or fastening of furniture, engines, textile machinery, automobiles, motorcycles, steel, wood, machinery, etc.
Premium Material These hex nuts are made of excellent 304 stainless steel material with smooth surfaces, which is stable, corrosion-resistant, rust-proof and durable.
Package includes: you will receive 10 pieces m10, 6 pieces m12, 25 pieces m6, 25 pieces m8, 35 pieces m5, 60 pieces m4, 60 pieces m3, 60 pieces m2.5, 60 pieces m2, total 340 pieces. and 1 x tweezers, different sizes can meet your different size requirements.
Easy to Use Designed with deep thread design to prevent loosening, deep thread and clear, and the force is even. An ideal equipment for family, hobby, workshop etc.
Easy to Store All stainless steel hex nuts are classified and stored in a transparent plastic storage box, which is easy to store, with matching labels, which are easy to use and find.

10,59 €
06

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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9.3

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

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 €
07

Nadinsta

Nadinsta 625 Pieces Self-Locking Lock Nut Clamping Nuts, Stainless Steel Locking Nuts Set, Self-Locking Nuts for Screws and Threaded Rods M2/M2.5/M3/M3.5/M4/M5/M6/M8/M10/M12

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9.2

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

【For Fixing Machines】Widely used in automobiles, technical machinery, cabinets, machinery, etc.Ideal for daily installation or fixing furniture, engines, cars, motorcycles, etc.
【Avoid loosening】Nylon inserts help the nut close more securely, and hex nuts are designed with deep threads to prevent loosening, and the threads are deep and clear.
Good stability: these self-locking nuts are made of high quality nylon and durable 304 stainless steel, with smooth surface, good corrosion resistance, waterproof, rust-proof, better safety and stability.
Easy to store: all hex nuts assortment set are packed in sturdy, easy to use plastic boxes, sorted and labelled, so you can quickly find the size you need.
625 pieces self-locking nuts assortment set: 7 sizes of nylon nut assortment: 35 x M3, 30 x M4, 25 x M5, 25 x M6, 10 x M8, 8 x M10, 5 x M12. 8 sizes of hex nuts, 95 x M2, 95 x M2.5, 85 x M3, 70 x M3.5m, 68 x M4, 28 x M5, 32 x M6, 14 x M8.

10,59 €
08

RUGLAMZHIP

140 Piece M3 Nut Set, Self-Locking Nuts, DIN985 Nut M3 Stainless Steel Standard A2 V2A Nuts, Metric Hex Nuts M3, Locking Nuts, Stop Nuts, Lock Nuts, Screw Nut

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9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide range of applications: suitable for use in aviation, automobiles, machinery, electrical appliances, machinery, indoor and outdoor decoration, steel, wood and other fields. Hex nuts securely grips to washers and other surfaces, reducing stress and protecting parts and screws.
The package includes: you will receive 140 pieces of M3 hex nuts, a sufficient quantity to meet the requirements of multiple scenarios. Nuts M3 stainless steel can be easily installed in small spaces and can be disassembled and installed at any time.
Nylon insert design: the nylon insert inside the nut m3 creates a strong reaction force when pressed, fills the gap between the connectors at both ends, increases friction, at the same time provides ideal vibration resistance and plays a locking function.
Exquisite material: M3 nut is made of high-quality stainless steel with clear and precise threads, good corrosion resistance and rust-proof performance, is not easy to deform or break and has a long service life and stability.
Easy to use: m3 nuts are used in conjunction with bolts and screws to connect and attach parts, reducing friction, insulating, resisting vibration and preventing loosening. All M3 stainless steel nuts are housed in a storage box so that they are easy to access and store, are well organised and not easy to confuse

4,88 €
09

SZSLMY

Pack of 185 Flange Nuts, Hexagonal Flange Nuts with Flange and Locking Toothing, M3 M4 M5 M6 M8 M10 M12 Hexagonal Nuts Self-Locking Nuts, Lock Tooth Nuts, Hex Flange Nut Set

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10% Off
9.0

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide Range of Applications When using flange locking nuts, no washers are required. Suitable for fixing screw connections, widely used in mechanical engineering, automotive industry, bicycle technology, furniture construction, workshop areas, steel and wooden structures, motors, textile machinery, etc.
The package contains: total 185 pieces, sizes and quantities include: 45 pieces M3, 40 pieces M4, 40 pieces M5, 30 pieces M6, 15 pieces M8, 12 pieces M10, 3 pieces M12. Sufficient quantity and rich sizes to meet the requirements of different areas.
Flange and lock tooth design: lock teeth place irregular surfaces to increase resistance between surfaces. More plug space ensures higher fastening strength. The flange ensures locking, helps to avoid vibration of the nut and increases the grip of the nut.
Flange Nuts No gaskets are required due to the existing flange. The serration prevents the nut from loosening from the screw under dynamic load due to the connection. Flange nuts are typically used in fastener applications with oversized holes and protruding edges that allow greater surface coverage.
Exquisite material: flange nuts are made of high-quality stainless steel, are exquisitely made, wear-resistant, corrosion-resistant, rust-resistant, does not tear or break during use, is durable and can serve you for a long time.

8,99 € 9,99 €(10% Off off)
10

FOMGIIN

FOMGIIN Hex Nuts M3, Pack of 10 Self-Locking Locking Nuts 304 Stainless Steel Nut Self-Locking Stop Nut DIN985 A2 V2A Hexagonal Stainless Steel Nut Stop Nuts Lock Nuts

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8.9

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

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 10 pieces M3 locking nut stainless steel, 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.

2,99 €