Our Top 20 Recommendations:
20 Best Locking Nuts Reviews:
Bestseller No. 1 
100Pcs 1/4-20 Nylon Insert Lock Nuts Hex Lock Nuts Carbon Steel Galvanized Finish COMRUN
- 🔩【Wide Use】Perfect for home DIY, Industrial Use
- 🔩【Good Quality 】Made of Nylon polyamide 6/6 and Steel in good quality
- 🔩【Heavy Duty 】 Designed to offer superior durability and exceptional strength
- 🔩【High Standard】Meet stringent industrial requirement
- 🔩【Various Kinds】A dazzling array of nylon insert nuts to meet your different needs, this package contains 100PCS 1/4-20
Bestseller No. 2 
VIGRUE 520pcs Hex Lock Nuts Nylon Insert Nut Assortment Kit, 304 Stainless Steel Hex Locknuts (M2 M2.5 M3 M4 M5 M6 M8 M10 M12)
- 304 STAINLESS MATERIAL: These Nuts are made from 100% 304 Stainless Steel which is one of the highest forms of strength and corrosion resistant metals, making it last longer than other Nuts on the market today. Even in bad environment like high temperature, cold weather, and high humidity areas. They have superior corrosion,rust resistance and the excellence of oxidation resistance, which can ensure long time using.
- Dependable Kit: VIGRUE hex nuts are very strong and are great for both indoor and outdoor use. This stainless is superior to regular steel and provides excellent rust resistance. Non-toxic & pollution-free.
- WIDER SIZE RANGE: Hex Nuts includes hex nuts and lock nuts, totally 520Pcs. According with standardized metric system. Total 7 different sizes can meet your different needs.
- CONVENIENT BOX: nuts are packed in a durable and sturdy box to efficiently bear the weight of the whole package. In order to avoid the nuts being scattered or lost during use, we specially package for each different type of nuts for your convenience and storage.
- WIDE APPLICATIONS: Hex Nuts Assortment Kit Serves a wide range of use and for professionals, amateurs, landlords, repairmen, other DIY . The set is perfect to replace broken and missing nuts. When you are mad for the missing nuts, it is a perfect friend for you. The kit has lots of different sizes, which can meet the maximum of requirement for you.
Bestseller No. 3 
VIGRUE 320PCS SAE and Metric Hex Lock Nuts Nylon Insert Nut Assortment Kit, 304 Stainless Steel Locknuts (M3 M4 M5 M6 M8 M10 M12 and 1/4-20 5/16-18 3/8-16 8-32 10-24)
- 🍀· 12 Most Popular SAE and Metric Sizes: this 320pcs hex nuts kit includes 1/4-20 (45 pcs), 8-32 (30 pcs), 10-24(30 pcs), 5/16-18 (20 pcs), 3/8-16 (5 pcs), M3(65 pcs), M4(37 pcs), M5(30 pcs), M6(25 pcs), M8(17 pcs), M10(10 pcs), M12(6 pcs) which allocates commonly applied lock nuts. Great fasteners for professional users and DIY projects
- 🍀· Sturdy and Durable: These Lock Nuts are quality 304 stainless steel, with good processing,rust resistant performance, high toughness, widely used in industry and furniture decoration industry and food medical industry.
- 🍀· Lock Effectively Even Multiple Time Uses: With nylon insert collar that is non-corrosive, these hex nuts greatly reduce loosening under vibrations and torque, providing better security and firm hold and a large number of use shows that the lock nut after repeated tightening and disassembly, the locking force does not decrease and can maintain the original effect.
- 🍀· Superior Vibration Resistance: when the thread is tightened, the thread line of the top of the bolt is tightened into the 30° wedge bevel of the nut, the force generated by the lock nut is much greater than the ordinary nut, which has great anti-loosening and anti-vibration ability.
- 🍀· WORRY-FREE: VIGRUE provide service for our product quality problem, if you're unhappy with our product for any reason, please feel free to contact us, we will solve the problem. NO HASSLE LIFETIME SERVICE If you need a single size or different quantity, welcome to contact
SaleBestseller No. 4 
NEIKO 50432A Hex Nut Assortment Set | 150 Pc Nylon Locking Nuts | A3 Steel Hex Assorted Hardware Kit #10 & SAE | Metal Screw Nut for Bolts | Friction Lock Nut
- APPLICATION: A nyloc nut, also referred to as a nylon-insert lock nut, polymer-insert lock nut, retaining nuts, prevailing torque nut, or elastic stop nut, is a kind of locknut with a nylon collar that increases friction on the screw thread.
- SECURE FIT: Assortment of 150 standard fastening nylon lock nuts in 6 common SAE sizes for convenient all-purpose bolts used most ideal for professionals and DIYers to prevent loosening due to vibration and rotation.
- DURABLE: Self-locking nut with nylon collar replaces lock washers preventing unintentional moving bolts from coming out for a more secure and durable hold in furniture craftsmanship, construction, or automotive uses.
- QUALITY: High quality polymer-insert hex lock nuts resist turning, preventing nut from loosening under vibration and torque. Constructed of high hardness stainless steel to prevent warping and deforming.
- HARDWARE ORGANIZER: Extra sturdy compartmentalized plastic carrying case allows neat organization and convenient storage for any garage, work bench, toolbox, or on the go job sites. Included sizes: #10x24, 1/4"x20, 1/4"x28, 5/16"x18, 3/8"x16, 1/2"x13.
Bestseller No. 5 
Swpeet 185Pcs 304 Stainless Steel Metric Lock Nut Assortment Kit Perfect for Lock Washers, Nylon Insert Locknut M3 M4 M5 M6 M8 M10 M12
- ☛ NYLON COLLAR ------ These lock nut manufactured with industrial strength, which can replace locking washers, prevent bolts from being exposed and provide better safety and firm fixation. Compared with locking washer, it has better performance because it is made of non-corrosive material.
- ☛ HIGH QUALITY ------ Have strong anti-rotation ability, which can prevent the locking nut from weakening and loosening under vibration and torque, thus reducing the clamping strength. Guaranteed intact, unswerving, almost indestructible.
- ☛ MULTIFUNCTIONAL ASSEMNLY KIT ------ Advanced 304 stainless steel nylon locking nut, 7 common sizes, general, convenient, easy to use, very suitable for professionals and DIY users. This suite is one of the few products on the market. It has high quality and better quantity. It is an economical and efficient choice.
- ☛ EASY TO STOREAGE ------ The rugged plastic box serves as a suitcase, allowing users to organize locking nuts in a neat manner according to size. It can also be stored in a garage, workbench or worksite as a convenient storage space. Only the Kit is packaged in a plastic box, and the other single sizes are packaged in plastic bags.
- ☛ WHAT YOU GET ------ In this kit, You will get 185Pcs 304 Stainless Steel Metric Lock Nut Assortment Kit. It consists of M3 ( 60Pcs ), M4 ( 40Pcs ), M5 (30Pcs), M6 ( 25Pcs ), M8 (15Pcs), M10 ( 10Pcs ) and M12 ( 5Pcs ). Allocate more of the commonly used locking nuts.
Bestseller No. 6 
binifiMux 130Pcs Black Nylon Inserted Hex Self Locking Nuts Assortment Kit,M3/ M4/ M5/ M6/ M8 Black Self Clinching Nuts Assortment Kit
- - Material: Q215 Carbon Steel ; - Weight: 210g;
- - Include size: M3 x 0.5mm, M4 x 0.7mm, M5 x 0.8mm, M6 x 1.0mm, M8 x 1.25mm;
- - Package: 130pcs x Nylon Lock nuts Assortment Kit; - Color: Black;
- - Used for: matching screws & matching bolts.
Bestseller No. 7 
Swpeet 250Pcs 304 Stainless Steel Metric Lock Nut Assortment Kit Perfect for Lock Washers, Nylon Insert Locknut M3 M4 M5 M6 M8 M10 M12
- ☛ NYLON COLLAR ------ These lock nut manufactured with industrial strength, which can replace locking washers, prevent bolts from being exposed and provide better safety and firm fixation. Compared with locking washer, it has better performance because it is made of non-corrosive material.
- ☛ HIGH QUALITY ------ Have strong anti-rotation ability, which can prevent the locking nut from weakening and loosening under vibration and torque, thus reducing the clamping strength. Guaranteed intact, unswerving, almost indestructible.
- ☛ MULTIFUNCTIONAL ASSEMNLY KIT ------ Advanced 304 stainless steel nylon locking nut, 7 common sizes, general, convenient, easy to use, very suitable for professionals and DIY users. This suite is one of the few products on the market. It has high quality and better quantity. It is an economical and efficient choice.
- ☛ EASY TO STOREAGE ------ The rugged plastic box serves as a suitcase, allowing users to organize locking nuts in a neat manner according to size. It can also be stored in a garage, workbench or worksite as a convenient storage space. The transparency of the box allows users to check the quantity and inventory without opening the box.
- ☛ WHAT YOU GET ------ In this kit, You will get 250Pcs 304 Stainless Steel Metric Lock Nut Assortment Kit. It consists of M3 ( 65Pcs ), M4 ( 55Pcs ), M5 (45Pcs), M6 ( 35Pcs ), M8 (25Pcs), M10 ( 15Pcs ) and M12 ( 10Pcs ). Allocate more of the commonly used locking nuts.
Bestseller No. 8 
binifiMux 50pcs 1/4-20 Inch Nylon Inserted Self Locking Nuts 304 Stainless Steel
- ☞ Material: 304 Stainless Steel; ☞ Thread Dia.: 1/4"; ☞ Thread Pitch: 20 TPI(Coarse);
- ☞ Color: Silver; ☞ Quantity: 50pcs;
- ☞ Thread Size:1/4 - 20; ☞ Measurement: Imperial;
- ☞ Name: 1/4 - 20 Lock Nuts;
Bestseller No. 9 
Bogart Electric Guitar String Locking Nut for Floyd Rose Style Tremolo Bridge with Mounting Screws and Wrench Chrome.
- Top mount design in which the mounting screws go through the top of the unit.
- Fits for floyd rose style electric guitar, also fit for strat or squier style electric guitar.
- Fits 6 String electric guitar with 42mm neck at the nut, can be used with your double lock system.
- Silver color, Zinc alloy material, length: 42mm(1.65in), Width: 15.2mm(0.6in), String Spacing is 6.5mm(0.26in).
- Package include: 1 x locking nut, 2 x mounting screws,1 x allen wrench.
Bestseller No. 10 
Wheel Accessories Parts 12x1.5 Wheel Locking Lug Nuts Closed End Bulge Acorn Chrome M12 x 1.50 Thread Size 1.26" Length Premium Cone Seat Wheel Lock Set with Key (Set of 4, Chrome)
- 1.26" (32mm) Overall Length
- Dual Hex Wheel Lock Key Designed to match OE lug wrench (13/16" & 3/4")
- M12 x 1.50 Thread Size
- Cone Seat Style Wheel Locks
- Set of 4 Locks and 1 Key
Bestseller No. 11 
Glarks 175pcs Metric 304 Stainless Steel Nylon Lock Nut Assortment Kit - M3 M4 M5 M6 M8 M10 M12
- 1. Product Type: High quality nylon insert lock nuts
- 2. Material: Made of superior 304 stainless steel, strong and durable
- 3. Package: This kit include 7 sizes of M3 M4 M5 M6 M8 M10 M12 total 175pcs in a clear box
- 4. Feature: With nylon washer that creates friction with the mating threads to prevent loosening, makes it better locking ability
- 5. Application: Can be widely used in automobile, construction machinery, shipbuilding and etc
Bestseller No. 12 
cSeao 210pcs Nylock Hex Self Locking Nuts Assortment Kit, Nylon Inserted Nuts, 304 Stainless Steel, Self Clinching Nuts
- ☛ Material: 304 Stainless Steel ; ☛ Weight: 240g;
- ☛ Include size: M2 x 0.4mm, M2.5 x 0.45mm, M3 x 0.5mm, M4 x 0.7mm, M5 x 0.8mm, M6 x 1.0mm, M8 x 1.25mm;
- ☛ Package: 210pcs x Nylon Lock nuts Assortment Kit; ☛ Color: Silver;
- ☛ Used for: matching screws & matching bolts.
SaleBestseller No. 13 
Glvaner 3/8"-16 Thread Size Stainless Steel Hex Locknuts with White Nylon Insert 304 Stainless Steel 18-8 50 Pack
- Thread Size: 3/8"-16; Thread Pitch: 16 TPI; Thread Type: Coarse Thread; Thread Coverage: Full Thread
- Hex Drive Size: 9/16"; Package: 50 pieces
- Material: 304 stainless steel (A2-70) and no exterior finish, greater strength and corrision resistance performance than regular stianless steel or zinc plated fasteners.
- Nut Heigth: 0.46 inch; Feel free to contact us if you have no idea about what size to choose.
- The nylon insert helps grip the screw thread to prevent from loosening. You could also find the matched screws with different head types in our shop with a very reasonable price.
Bestseller No. 14 
#10-24 inch Nylon Inserted Hex Locknuts (50 Pack), 304 Stainless Steel (18-8) lock nut, Finish Hex lock Nut
- Hole Diameter: #10, Thread Pitch: 24 TPI
- Hex Drive Size: 3/8" Allen Hex Drive
- Nut Height: 0.18 inch; Nut Width From Point to Point: 0.41 inch;
- Known as stop nuts. Nylon insert grips bolt threads and helps to prevent loosening from vibration.
- Material: High Quality 18-8 Stainless Steel 304, great strength and good corrosion resistance to make fasteners last!
Bestseller No. 15 ![Lock Nut Assortment [1/4'-20,3/8'-16,5/16'-18,1/2'-13,#10-24,#8-32], VIGRUE 304 Stainless Steel Nylon Insert Hex Lock Nuts & Washers Kit SAE, 240PCS](https://m.media-amazon.com/images/I/51PU8J24AjL._SL160_.jpg)
Lock Nut Assortment [1/4"-20,3/8"-16,5/16"-18,1/2"-13,#10-24,#8-32], VIGRUE 304 Stainless Steel Nylon Insert Hex Lock Nuts & Washers Kit SAE, 240PCS
- Type: Stainless Steel Nylon Insert Lock Nut & Washer Assortment Kit.
- Thread Size: #8-32 #10-24 1/4"-20 5/16"-18 3/8"-16 1/2"-13 Nylon Lock Nuts | UNC Coarse Thread
- All lock nuts and washers are made of stainless steel 304, provides good strength and corrosion resistance in bad environments.
- Will NOT COME LOOSE: With a nylon insert inside, the lock nuts greatly reduce loosening under vibrations and torque.
- Warranty: Customers enjoy lifetime service for product quality problem, if you have any concerns, please contact us for a happy solution.
Bestseller No. 16 
Wheel Accessories Parts 14x1.5 XL Wheel Locking Lug Nuts Closed End Bulge Acorn Chrome M14 x 1.5 Thread Size 1.86" Length Premium Wheel Lock Set with Key (Set of 4)
- Aftermarket Wheel Locks for AFTERMARKET WHEELS, NOT OEM replacements* Please verify fitment prior to purchasing the product sizing might be different than the Locks you already have-compare dimensions against your own.
- Dual Hex Wheel Lock Key Designed to match OE lug wrench (13/16" & 3/4")
- M14x1.5 Thread 1.86" (47mm) Overall Length
- Cone Seat Style Wheel Locks
- Set of 4 Locks and 1 Key
Bestseller No. 17 
1/4"- 20 Nylon Insert Hex Lock Nuts, (Elastic Stop Nuts) Stainless Steel 18-8, Plain Finish, Quantity 100 by Bridge Fasteners
- Use with external threaded fastener that has a thread diameter of 1/4-20
- Height of Nut: 5/16"
- Hex Socket Drive: 7/16"
- 18-8 Stainless Steel, High Quality, provides great strength and protection against corrosion to make these fasteners last! These Nylon Lock Nuts have the right strength and chemical makeup to make sure they get the job done and out perform the competition.
- Qty: 100
Bestseller No. 18 
Wheel Accessories Parts 5 PC 1/2 Black Wheel Locking Lug Nuts Acorn Cone Seat Closed End 1/2"-20 Thread Size Premium Wheel Lock Set with Key (Set of 5)
- 1.26" (32mm) Overall Length
- 1/2 UNF Thread Size
- Cone Seat Style Wheel Locks
- Black Set of 5 Locks and 1 Key
- ❌ Do not use a power wrench/ impact wrench/ pneumatic wrench
Bestseller No. 19 
binifiMux 100pcs M2 x 0.4mm 304 Stainless Steel Nylock Self Locking Nuts
- Material: 304 Stainless Steel;
- Quantity: 100pcs; Pitch: 0.4mm;
- Name: M2 Self Locking Nylock Nuts;
- Package: 100pcs x M2mm lock Nuts;
- Usage: Tighten any kind M2 Thread Screws.
Bestseller No. 20 
Wheel Accessories Parts 4 PC 14x1.5 Wheel Locking Lug Nuts Open End Bulge Acorn Chrome M14x1.5 Thread Size, 0.83" Length Premium Wheel Lock Set with Key (Set of 4)
- Dual Hex Wheel Lock Key Designed to match OE lug wrench (13/16" & 3/4")
- M14x1.5 Thread, bulge acorn seat for aftermarket wheels
- Open End Bulge Acorn 0.84" length
- Per-packaged with 4 lock nuts, 1 unique key, and key registration card
- Full money back guarantee. If you are not satisfied with this product or if you have any question, please feel free to contact us. We would like to issue full refund if finally we could not resolve your problem or you are not satisfied with the result. For any questions and professional help, feel free to call us at (877) 514-0889, or send an email to [email protected]
Last update on 2023-02-03 / Affiliate links / Images from Amazon Product Advertising API