Best Plastic Flange Nuts of 2026

Name: M6 Plastic Nylon Flange Nuts Black Pack of 50
Brand: Faspiroty

Corey Phillips

Last Updated: 5 Feb 2026

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

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

#TOP 1

M6 Plastic Nylon Flange Nuts Black Pack of 50

9.9

Buy on Amazon Read Review

M6 Plastic Nylon Flange Nuts Black Pack of 50

#TOP1

9.9

Read Review

#TOP 2

4 Pcs 1/2" BSP Tap Sink Flange Back Nuts, Plastic Mixer Tap Fixing Nut Kit

9.8

Buy on Amazon Read Review

4 Pcs 1/2" BSP Tap Sink Flange Back Nuts, Plastic Mixer Tap Fixing Nut Kit

#TOP2

9.8

Read Review

#TOP 3

4 Pack 1/2" BSP Sink Tap Back Nuts, Lasting ABS Plastic Flanged Back Nuts Surface Pipe Fittings

9.6

Buy on Amazon Read Review

4 Pack 1/2" BSP Sink Tap Back Nuts, Lasting ABS Plastic Flanged Back Nuts Surface Pipe Fittings

#TOP3

9.6

Read Review

Top 10 Plastic Flange Nuts

#TOP 1

M6 Plastic Nylon Flange Nuts Black Pack of 50

Faspiroty

falanluomu004

Black

M6 Plastic Nylon Flange Nuts Black Pack of 50

9.9

FTB Score

Buy on Amazon

Find on eBay

Features

Features: Surfacr Is Smooth Without Burrs, Thread Is Deep, Pitch Is Uniform, Provide Uniform Force And Good Tightening Strength When Using.

Material: The Flange Nut Is Made Of Nylon, Has The Feature Of Light Weight, Good Sealing, Wear-Resistant And Corrosion-Resistant.

Size: Thread Inner Diameter Is 6mm, Whole Hight Is 6mm, More Detail Please Refer Picture.

Package: 50 Pieces

Application: As A Locking Nut, It Is Widely Used In Various Mechanical Equipment And Pipeline Systems. It Plays An Important Role In Connecting And Fixing.

Read more Read less

#TOP 2

4 Pcs 1/2" BSP Tap Sink Flange Back Nuts, Plastic Mixer Tap Fixing Nut Kit

SANTUO

ZJL-HZY-PG2706-01

Black

4 Pcs 1/2" BSP Tap Sink Flange Back Nuts, Plastic Mixer Tap Fixing Nut Kit for Bathroom Basin Taps, Kitchen Sink Faucet Nut Fastener, Durable ABS Accessories for Home Use

9.8

FTB Score

Buy on Amazon

Find on eBay

Features

Standard 1/2" BSP Size： These Faucet Bathroom Back Nut Kits Feature A 1/2" BSP Thread Size, Ensuring A Perfect Fit For A Wide Range Of Plumbing Fittings, Including Mixer Taps And Kitchen Sink Fixing Nuts. Outer Diameter: 41mm, Inner Dimater: 19mm, Thickness: 11mm. Spanner Size: 27mm.

Durable ABS Plastic Construction： Made From High-Strength, Corrosion-Resistant ABS Plastic, These 1/2" BSP Plastic Back Nuts Are Perfect For Long-Lasting Use. They Offer Excellent Resistance To High Temperatures, Making Them Ideal For Various Plumbing Applications, Including Bathroom Sinks And Mixers.

Wide Application For Plumbing：Ideal For Bathroom Basin Taps, Mixers, And Other Plumbing Fittings, These Sink Flange Back Nuts Are Widely Used In Various Home Plumbing Systems. Their Versatile Design Makes Them Compatible With Standard UK Plumbing, Making Them A Reliable Choice For All Your Plumbing Needs.

Practical 4-Pack For Home Use：This Package Includes 4 Plastic Sink Tap Back Nuts, Providing An Affordable And Practical Solution For Home Plumbing Repairs Or Installations. Perfect For Keeping Spares On Hand, These Back Nuts Are A Must-Have For Anyone Working With Plumbing Systems.

Easy Installation With No Special Tools： Designed For Straightforward Installation, These Faucet Nut Fastener Taps Feature G1/2-Inch Female Threads. No Specialized Tools Are Needed, Making Them Suitable For Both Professional Plumbers And DIY Enthusiasts Looking To Easily Install Or Replace Back Nuts.

Read more Read less

#TOP 3

4 Pack 1/2" BSP Sink Tap Back Nuts, Lasting ABS Plastic Flanged Back Nuts Surface Pipe Fittings

Aeipou

Sink Tap Back Nut

Black

4 Pack 1/2" BSP Sink Tap Back Nuts, Lasting ABS Plastic Flanged Back Nuts Surface Pipe Fittings for Bathroom Basin Taps and Mixers High-Strength Plumbing tools Accessories for Home Use

9.6

FTB Score

Buy on Amazon

Find on eBay

Features

STANDARD 1/2" BSP SIZE – Designed With A 1/2" BSP Thread, These Plastic Back Nuts Are Ideal For Use With Bathroom Basin Taps, Mixers, And Other Plumbing Fittings. Outer Diameter Is 41mm, Inner Diameter 19mm, And Thickness Is 11mm To Ensure A Proper Fit.

DURABLE ABS PLASTIC MATERIAL – Made From High-Quality ABS Plastic, These Sink Tap Back Nuts Offer Excellent Strength, Durability, And Resistance To Corrosion And High Temperatures. Perfect For Long-Lasting Performance In Various Plumbing Applications.

WIDE APPLICATION USE – Suitable For A Variety Of Plumbing Applications, These Plastic Back Nuts Are Commonly Used In Sinks, Bathroom Taps, And Mixers. Their Universal Design Ensures Compatibility With Standard UK Plumbing Systems.

EASY INSTALLATION – These Sink Tap Back Nuts Are Designed For Simple Installation With Their G1/2-Inch Female Threads. No Special Tools Are Required, Making Them Perfect For Both Professional Plumbers And DIY Enthusiasts Alike.

CONVENIENT 4-PACK – Each Package Includes 4 Pieces Of 1/2" BSP Plastic Flanged Back Nuts, Providing An Affordable And Practical Solution For Home Plumbing Repairs And Installations. Perfect For Keeping Spares On Hand.

Read more Read less

#TOP 4

M10 Plastic Nylon Flange Nuts Black Pack of 30

Faspiroty

falanluomu006

black

M10 Plastic Nylon Flange Nuts Black Pack of 30

9.4

FTB Score

Buy on Amazon

Find on eBay

Features

Features: Surfacr Is Smooth Without Burrs, Thread Is Deep, Pitch Is Uniform, Provide Uniform Force And Good Tightening Strength When Using.

Material: The Flange Nut Is Made Of Nylon, Has The Feature Of Light Weight, Good Sealing, Wear-Resistant And Corrosion-Resistant.

Size: Thread Inner Diameter Is 10mm, Whole Hight Is 9.8mm, More Detail Please Refer Picture.

Package: 30 Pieces

Application: As A Locking Nut, It Is Widely Used In Various Mechanical Equipment And Pipeline Systems. It Plays An Important Role In Connecting And Fixing.

Read more Read less

#TOP 5

Swpeet 135Pcs 7 Sizes M3 M4 M5 M6 M8 M10 M12 Metric Black Nylon Flange Nuts Assorment Kit, Metric Thread Plastic Fastener Nuts Hex Flange Nuts

Swpeet

S4396

Black

Swpeet 135Pcs 7 Sizes M3 M4 M5 M6 M8 M10 M12 Metric Black Nylon Flange Nuts Assorment Kit, Metric Thread Plastic Fastener Nuts Hex Flange Nuts for Home Automotive Shop Fasteners Use

9.2

FTB Score

Buy on Amazon

Find on eBay

Features

Quality Nylon Material ------ Made Of Nylon, No Surface Treatment, Good Toughness, Wear And Corrosion Resistance, Smooth Surface Without Burrs. Nylon Fasteners Are More Lightweight Than Traditional Metal Fasteners And Have Good Insulating Properties; In Addition, They Are Corrosion Resistant And Can Conform To Irregular Surfaces.

What You Get ------ In This Kit, You Will Get 135Pcs 7 Sizes M3 M4 M5 M6 M8 M10 M12 Metric Black Nylon Flange Nuts Assorment Kit, Including 30Pcs M3 Nylon Flange Nuts; 30Pcs M4 Nylon Flange Nuts; 25Pcs M5 Nylon Flange Nuts; 25Pcs M6 Nylon Flange Nuts; 10Pcs M8 Nylon Flange Nuts; 10Pcs M10 Nylon Flange Nuts; 5Pcs M12 Nylon Flange Nuts. Intotal 135Pcs. The Item Come With A Sturdy Plastic Organizer Box For Convenient To Store And Carry.

Wide Applications ---------- Perfect For Electrical Connections On Household And Commercial Appliances, Automotive And Marine Uses In Which The Power Source Has A Threaded/bolt-Type Connection. Great Replacement For Industrial And Construction Fasteners,also Can Be A Important Accessories In Your Daily Life.

Compared To Metal Flange Nuts ------- Compared To Ordinary Metal Nuts, The Biggest Advantage Of Plastic Nuts Is Their Good Insulation Performance And Lack Of Conductivity. Additionally, Due To Its Non-Metallic Manufacturing, It Does Not Generate Signal Interference Such As Eddy Currents Under The Influence Of Current Or Other Electrical Signals, Making It Suitable For Anti-Interference In Industries Such As Communication.

135Pcs Hex Nuts -------- It Contains 135Pcs Of The Nylon Hex Flange Nuts. Different Ypes Of Hex Flange Nuts, Designed To Stand Off The Material To Allow Easy Weld Penetration, Widely Used To Industrial Machine. Used In Conjunction With Bolts And Screws To Connect And Fasten The Parts. Hex Flange Nuts Are Used To Match Screws And Bolts To Help Secure Items.

Read more Read less

#TOP 6

M12 Plastic Nylon Flange Nuts Black Pack of 30

Faspiroty

falanluomu007

Black

M12 Plastic Nylon Flange Nuts Black Pack of 30

9.2

FTB Score

Buy on Amazon

Find on eBay

Features

Features: Surfacr Is Smooth Without Burrs, Thread Is Deep, Pitch Is Uniform, Provide Uniform Force And Good Tightening Strength When Using.

Material: The Flange Nut Is Made Of Nylon, Has The Feature Of Light Weight, Good Sealing, Wear-Resistant And Corrosion-Resistant.

Size: Thread Inner Diameter Is 12mm, Whole Hight Is 11.8mm, More Detail Please Refer Picture.

Package: 30 Pieces

Application: As A Locking Nut, It Is Widely Used In Various Mechanical Equipment And Pipeline Systems. It Plays An Important Role In Connecting And Fixing.

Read more Read less

#TOP 7

EMSea 4Pcs Sink Tap Back Nut 3/4" BSP Plastic Back Nuts Accessories

EMSea

HD|840-A

Black

3/4"

EMSea 4Pcs Sink Tap Back Nut 3/4" BSP Plastic Back Nuts Accessories Cover

EMSea 4Pcs Sink Tap Back Nut 3/4" BSP Plastic Back Nuts Accessories for Bathroom Basin Taps Mixers Round Faced Flanged Back Nuts Home tools Black

9.2

FTB Score

Buy on Amazon

Find on eBay

Features

Size: Outer Diameter: 45.5mm, Inner Dimater: 25mm, Thickness: 12mm. Spanner Size: 31.5mm.

Material: The Sink Tap Back Nut Is Made Of ABS Plastic, With High Strength, Corrosion Resistance, And High-Temperature Resistance, Sturdy And Durable, Which Has A Long Service Life.

Package: Package Includes 4pcs 3/4 Inch BSP Plastic Flanged Back Nuts.

Note: Please Check The Style And Size Of The Product You Want Before You Buy.

Application: 3/4"bsp Plastic Backnuts Are Normally Used With Bathroom Basin Taps & Mixers As Well As Other Plumbing Fittings & Mixers

Read more Read less

#TOP 8

8Pcs Sink Tap Back Nuts Plastic 1/2" BSP Back Nuts Accessories

Lunpoem

FENLUO-21

Blcak

1cm x 2cm x 1cm

8Pcs Sink Tap Back Nuts Plastic 1/2" BSP Back Nuts Accessories Cover

8Pcs Sink Tap Back Nuts Plastic 1/2" BSP Back Nuts Accessories for Bathroom Basin Taps, Mixers, and Plumbing Fittings High Strength, Corrosion Resistant ABS Home Tools

9.0

FTB Score

Buy on Amazon

Find on eBay

Features

Easy To Use For Plumbing Installations These Tub Tap Sink Nuts Are Designed For Hassle-Free Installation With Standard Bathroom Or Kitchen Plumbing Fixtures. Their Secure Fit Makes Them A Reliable Choice For Both Professional Plumbers And DIY Users Handling Tap And Thread Hub Installations.

Durable And Reliable Sink Tap Nuts Crafted From High-Quality ABS Plastic, Each Sink Tap Nut Offers Excellent Durability, Corrosion Resistance, And Heat Tolerance. These Tap Back Nuts Are Designed For Long-Term Performance In Humid Environments Such As Bathrooms And Kitchens.

Wide Compatibility With Plumbing Fixtures Whether You're Securing A Mixer Tap, Replacing A Basin Fitting, Or Connecting Pipework, These Tap Back Nuts Are Suitable For A Range Of Plumbing Projects. Compatible With Many Common Setups, They Offer A Secure And Dependable Connection Every Time.

Multi-Purpose Use Beyond Plumbing In Addition To Plumbing Work, These Plastic Nuts Can Serve A Variety Of Creative Purposes Such As Organizing Gear Or Providing Temporary Fixes For Items Like Bicycle Wheel Nuts Or Securing Bike Wheel Nut Covers During Transport Or Maintenance.

Great For Home, Workshop, Or Garage From Fixing Taps To Assisting With Bike Maintenance Involving Quick Release Bike Wheel Nuts, This Set Provides Functional Hardware For Multiple Use Cases. Keep Them On Hand In Your Toolbox, Garage, Or Workshop For When Reliable Fastening Is Needed.

Read more Read less

#TOP 9 Best Hex Flange Nut

300 Pcs Othmro Serrated Flange Hex Nuts Kit

Othmro

M3 M4 M5 M6 M8 flange nuts

Silver

300 Pcs Othmro Serrated Flange Hex Nuts Kit Cover

300 Pcs Stainless Steel Serrated Flange Hex Nuts - M3 M4 M5 M6 M8 Lock Nuts, Metric Fully Threaded Replacement Hexagon

8.9

FTB Score

Buy on Amazon

Find on eBay

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 10

4Pcs Sink Tap Back Nut 1/2" BSP Plastic Back Nuts Accessories

Generic

ZEW-887

Black

19mm

4Pcs Sink Tap Back Nut 1/2" BSP Plastic Back Nuts Accessories Cover

4Pcs Sink Tap Back Nut 1/2" BSP Plastic Back Nuts Accessories for Bathroom Basin Taps Mixers Round Faced Flanged Back Nuts Home Tools Black

8.9

FTB Score

Buy on Amazon

Find on eBay

Features

Material: The Sink Tap Back Nut Is Made Of ABS Plastic, With High Strength, Corrosion Resistance, And High-Temperature Resistance, Sturdy And Durable, Which Has A Long Service Life.sink Tap Nuts Bathroom Tap Plastic Nut

Application: 1/2"bsp Plastic Backnuts Are Normally Used With Bathroom Basin Taps & Mixers As Well As Other Plumbing Fittings & Mixers

Size: Outer Diameter: 41mm, Inner Dimater: 19mm, Thickness: 11mm. Spanner Size: 27mm.

Package: Package Includes 4pcs 1/2 Inch BSP Plastic Flanged Back Nuts.sink Tap Nuts Bathroom Tap Plastic Nut

Note: Please Check The Style And Size Of The Product You Want Before You Buy.

Read more Read less

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 54 plastic flange nut products and shortlisted 10 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 £7.29.

The plastic flange nuts are available for purchase. We have researched hundreds of brands and picked the top brands of plastic flange nuts, including Faspiroty, SANTUO, Aeipou, Swpeet, EMSea.

Written by

Corey Phillips

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.