Best Plastic Flange Nuts of 2025

Corey Phillips Avatar
Corey Phillips
Last Updated: 1 Feb 2025

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Plastic flange nuts are a type of fastener that is widely used in various industries. These nuts are made of high-quality plastic material, and they are designed to provide a secure and reliable fastening solution. Plastic flange nuts are lightweight, corrosion-resistant, and easy to install. They are ideal for use in applications where metal nuts are not suitable, such as in electronics, automotive, and aerospace industries. With their excellent resistance to vibration and shock, plastic flange nuts can help to stabilise the assembly and prevent loosening over time.

At a Glance: Our Top Picks

United Pacific Chrome Plastic Nut Covers Cover #TOP 1
United Pacific Chrome Plastic Nut Covers
ftb score rating icon 9.9
300 Pcs Othmro Serrated Flange Hex Nuts Kit Cover #TOP 2
300 Pcs Othmro Serrated Flange Hex Nuts Kit
ftb score rating icon 9.8
10x Zinc Plated Serrated Flange Nuts Cover #TOP 3
10x Zinc Plated Serrated Flange Nuts
ftb score rating icon 9.6

Top 9 Plastic Flange Nuts

#TOP 1

United Pacific Chrome Plastic Nut Covers

United Pacific
10007B
Chrome
United Pacific Chrome Plastic Nut Covers Cover
United Pacific 10007B Chrome Plastic 33MM X 4 1/8" X-Pointed Thread-On Nut Cover W/Flange

The United Pacific Nut Covers are designed to enhance the appearance of your vehicle's wheels with their chrome plastic finish. These 33 mm thread-on nut covers feature a stylish spike shape that adds a unique touch. Additionally, they come with a flange to ensure a secure fit and to cover up the flange on the lug nuts. These covers are specifically made to fit lug nuts on hub piloted wheels, ensuring compatibility and ease of installation for you.

What We Like
Stylish chrome finish
Spike shape design
Flanged for secure fit
Compatible with hub piloted wheels
#TOP 2

300 Pcs Othmro Serrated Flange Hex Nuts Kit

M3 M4 M5 M6 M8 flange nuts
Silver
300 Pcs Othmro Serrated Flange Hex Nuts Kit Cover
300 Pcs Serrated Flange Hex Nuts Kit, M3 M4 M5 M6 M8 Serrated Flange Hex Nuts, Hexagon Flange Nuts, Flanged Lock Nuts, Stainless Steel Serrated Nut, Metric, Fully Thread Replacement Nut

The Othmro Serrated Hex Nuts kit includes 300 pieces of assorted nuts in five different sizes, making it ideal for various applications. Each nut is made from high-quality 304 stainless steel, providing strength and durability, especially for outdoor use. The clear plastic packaging keeps the nuts organised and easily accessible, preventing damage during storage. With precise threading and a design that distributes fastening force evenly, these nuts ensure a secure connection, even on uneven surfaces.

What We Like
Durable stainless steel construction
Convenient organised packaging
Wide range of sizes
Secure connection on uneven surfaces
Good for outdoor use
#TOP 3

10x Zinc Plated Serrated Flange Nuts

Nuts About Bolts
SER1
10x Zinc Plated Serrated Flange Nuts Cover
10x M6 Serrated Flange Hexagon Nuts, Steel Zinc Plated BZP - Corrosion-Resistant Flanged Hex Lock Nuts for Bolts & Screws, Ideal for Secure DIY & Industrial Applications

The Nuts About Bolts Flange Nuts are designed with durable zinc plating, providing excellent corrosion resistance for both indoor and outdoor use. Their serrated flange design ensures a secure fit that prevents loosening from vibrations, giving you peace of mind during use. The integrated flange helps distribute load evenly, reducing the risk of damage to your fastening surface and allowing you to forgo washers. Ideal for high-vibration environments, these nuts are perfect for automotive, machinery, and construction projects.

What We Like
Corrosion-resistant zinc coating
Secure locking with serrated flange
Even load distribution
Ideal for high-vibration areas
Versatile for various materials
#TOP 4

55 Pack M6 Serrated Flange Hex Nuts

Mriuuod
NM231020N-0005-FBA
Silver
M6 US
55 Pack M6 Serrated Flange Hex Nuts Cover
55 Pack M6 Serrated Flange Hex Nuts, M6-1mm Hexagon Flange Nuts, 304 Stainless Steel, Metric Nuts Fasteners, Locknuts Replacement Nut with Plastic Case for DIY Home Mechanism

The Mriuuod Flange Nuts offer a durable solution for your fastening needs. Made from high-quality 304 stainless steel, these nuts provide exceptional strength and protection, making them ideal for outdoor use. With a height of 6mm and a hex width of 10mm, they ensure a secure fit. Their serrated flange design spreads the fastening force over a larger area, reducing the risk of damage to surfaces. Packaged in a convenient plastic box, you can easily keep them organised and protected during storage or transport.

What We Like
Durable 304 stainless steel
Convenient plastic storage box
Reduces surface damage
Secure on uneven surfaces
Heavy-duty design
#TOP 5

195pcs Stainless Steel Flange Nuts Set

LY240612
195pcs Stainless Steel Flange Nuts Set Cover
195pcs Hex Flange Nuts Set, Stainless Steel Serrated Lock Nuts Assorted For Bolts/Screws,Nuts For Furniture, Wood, Metal, Automotive, Mechanical Stop Fasteners(M3/4/5/6/8/10/12)

The Lemiyoo Flange Nuts set includes 195 pieces made from high-quality stainless steel, ensuring durability and resistance to rust and corrosion. With seven different sizes, this kit meets a wide range of daily needs, making it versatile for various applications. The wide flange design acts like a washer, providing extra protection and stability, while the serrated surface helps prevent loosening under dynamic loads. This set is perfect for anyone who values reliable fasteners for furniture, automotive, and mechanical projects.

What We Like
Durable stainless steel material
Variety of sizes included
Prevents loosening under load
No washers needed
Convenient storage box

Swpeet 165Pcs Stainless Steel Flange Nuts Kit

S573
Assortment Kit
Swpeet 165Pcs Stainless Steel Flange Nuts Kit Cover
Swpeet 165Pcs 304 Stainless Steel Serrated Metric Flange Nuts Hex Lock Nuts Assortment Kit, 7 Sizes - M3 M4 M5 M6 M8 M10 M12 B07H9ZMJYZ B07H9ZMJYZ B07JHW8WZJ

The Swpeet Flange Nuts Kit includes 165 pieces of 304 stainless steel flange nuts in seven sizes: M3, M4, M5, M6, M8, M10, and M12. This assortment comes in a sturdy plastic organiser box, making it easy for you to store and transport. The corrosion-resistant finish ensures that these nuts will last a lifetime, making them ideal for both home and automotive use. With various types designed for easy weld penetration, they are perfect for industrial machines as well.

What We Like
Durable stainless steel material
Convenient storage box included
Corrosion resistant finish
Wide range of sizes
Suitable for multiple applications
#TOP 7

Sliverdew 12 Pcs Bike Wheel Axle Nut Kit

Sliverdew540522_1
Sliverdew 12 Pcs Bike Wheel Axle Nut Kit Cover
Sliverdew 12 Pcs Bike Wheel Axle Nut and Safety Washer Kit, 3 Size Bicycle Hub Flanged Axle Nut Hardware Parts Bike Flange Nuts for Front and Back Wheel

The Sliverdew Bike Axle Nut Kit offers high-quality, durable components made from high-strength steel with an antirust treatment. This ensures that the nuts are sturdy and can withstand the rigours of cycling without deforming or breaking. The kit includes three sizes of flange axle nuts, providing versatility for various bike types, whether you own a mountain bike or a folding bike. Additionally, the nuts come neatly packaged in a plastic storage box, making it easy for you to store and transport them as needed.

What We Like
High-strength steel construction
Includes three size options
Rust-resistant treatment
Convenient storage box
Suitable for various bike types
#TOP 8

Swpeet 105Pcs Stainless Steel Flange Nuts Kit

Fnut
Assortment Kit
Swpeet 105Pcs Stainless Steel Flange Nuts Kit Cover
Swpeet 105Pcs 304 Stainless Steel Serrated Metric Flange Nuts Hex Lock Nuts Assortment Kit, 7 Sizes - M3 M4 M5 M6 M8 M10 M12

The Swpeet Flange Nuts Kit includes 105 pieces of 304 stainless steel flange nuts in seven different sizes, ranging from M3 to M12. The sturdy plastic organiser box makes it easy for you to store and transport the nuts, ensuring you always have the right size on hand. These flange nuts are designed to facilitate easy weld penetration, making them ideal for various industrial applications. With a wide selection of commonly used sizes, this kit is perfect for both DIY enthusiasts and professionals who need reliable components for their projects.

What We Like
Includes 105 pieces
Seven different sizes
Sturdy storage box
Facilitates easy weld penetration
Suitable for industrial use
#TOP 9

Hilitchi 140-Pcs Hex Flange Nuts Kit

HFN140
Silver
Hilitchi 140-Pcs Hex Flange Nuts Kit Cover
Hilitchi 140-Pcs M3 M4 M5 M6 M8 M10 M12 Hex Flange Nuts Assortment Kit - 304 Stainless Steel

The Hilitchi Flange Nuts assortment kit offers a high-quality selection of 140 hex serrated flange nuts made from durable 304 stainless steel. This material ensures that the nuts resist rust and corrosion, making them ideal for both indoor and outdoor projects. With seven different sizes, including M3 to M12, you will have the perfect fit for various applications. The nuts come neatly packed in a rugged, re-sealable plastic storage case, allowing you to keep them organised and easily accessible whenever you need them.

What We Like
Diverse size options available
Durable stainless steel material
Rust and corrosion resistant
Convenient storage case
High-quality construction
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is the purpose of flange nuts?

Flange nuts are often used in fastening applications involving oversized holes. They have a protruding rim that covers more surface area. Even if the hole is too big for a traditional nut, it may support the use of a flanged nut.

2. Are flange nuts reusable?

Flange lock nuts are reusable but only for a limited number of times because the prevailing torque declines each time the nut is used. Always follow the manufacturer's recommendations regarding nut reuse, thread lubricants and torque values.

3. Are flange nuts stronger?

Flange lock nuts provide more space for serration. Serration is the process of putting irregular surface to increase the resistance force between the surfaces. As there is more mating space, it provides more tightening strength.

4. What does a flange nut look like?

A flange nut looks like a standard hex nut from one side, but the bottom is widened into a circular flange, creating a bell-like shape. Manufacturers serrate the bearing surface of that flange to create serrated flange nuts, allowing for a better grip on the surface of the joint.

Editor's Notes

During our plastic flange nut research, we found 109 plastic flange nut products and shortlisted 9 quality products. We collected and analyzed 6,722 customer reviews through our big data system to write the plastic flange nuts list. We found that most customers choose plastic flange nuts with an average price of £7.56.

The plastic flange nuts are available for purchase. We have researched hundreds of brands and picked the top brands of plastic flange nuts, including United Pacific, Othmro, Nuts About Bolts, Mriuuod, Lemiyoo.

Written by
Corey Phillips Avatar

Corey Philips is an electrician and lighting expert. He graduated from the University of Birmingham in 2012 with a Bachelor's degree in electrical and electronics engineering. Corey is a specialist contractor in lights. He sells and installs and recommends lights and lamp sheds, and other lights accessories. Aside from that, Corey is vast in installing and maintaining electrical appliances like air conditioners, water heaters, and the likes.