Best Stainless Steel Flange Nuts of 2026

Corey Phillips Avatar
Corey Phillips
Last Updated: 5 Feb 2026

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Stainless Steel Flange Nuts are a type of fastener that feature a wide flange at one end, providing a larger surface area for distributing pressure and preventing loosening. Made from high-quality stainless steel, these nuts are resistant to corrosion and are suitable for use in a variety of industries including automotive, construction, and marine. The flange design also helps to stabilise the nut and prevent it from rotating, providing a secure and long-lasting connection. Overall, Stainless Steel Flange Nuts are a reliable and durable option for any project that requires a strong and secure fastener.

At a Glance: Our Top Picks

300 Pcs Othmro Serrated Flange Hex Nuts Kit Cover #TOP 1
300 Pcs Othmro Serrated Flange Hex Nuts Kit
ftb score rating icon 9.8
195pcs Stainless Steel Flange Nuts Set Cover #TOP 2
195pcs Stainless Steel Flange Nuts Set
ftb score rating icon 9.7
185 Pcs Stainless Steel Flange Nuts Set Cover #TOP 3
185 Pcs Stainless Steel Flange Nuts Set
ftb score rating icon 9.5

Top 8 Stainless Steel Flange Nuts

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

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 2

195pcs Stainless Steel Flange Nuts Set

LY240612
Silver
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
#TOP 3

185 Pcs Stainless Steel Flange Nuts Set

SZSLMY
001-12
silver
185 Pcs Stainless Steel Flange Nuts Set Cover
185 Pcs Hex Flange Nuts, Serrated Flange Hex Nuts, Serrated Flange Nuts, Flanged Lock Nuts, Stainless Steel Serrated Nut, Universal Locknuts for Furniture Construction, M3 M4 M5 M6 M8 M10 M12

The SZSLMY Flange Nuts offer exceptional durability as they are made from high-quality stainless steel, ensuring they are wear-resistant and rust-resistant. Their unique flange and ratchet design enhance fastening strength and prevent loosening caused by vibration, giving you peace of mind during use. With no need for additional gaskets, these nuts simplify your projects, making them ideal for various applications, from furniture making to automotive repairs. This set provides a wide range of sizes to meet your diverse needs.

What We Like
Durable stainless steel construction
Enhanced fastening strength
No gaskets required
Wide range of sizes
Versatile applications
#TOP 4

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
#TOP 5

M6 Marine Grade A4 Stainless Steel Flange Nuts

StainlessSteelNuts
Silver
M6 Marine Grade A4 Stainless Steel Flange Nuts Cover
M6 Serrated Flange Nuts Marine Grade Style in A4 Stainless Steel 316 – Corrosion Resistant Fasteners (Pack of 20)

The Universal M6 Flange Nuts are crafted from A4 Stainless Steel 316, making them ideal for harsh indoor and outdoor environments. Their marine-grade material ensures excellent resistance to saltwater corrosion, so you can rely on them even in tough conditions. The A4 stainless steel is specially designed to resist pitting corrosion, which is common in caustic settings like marine or exhaust applications, offering you long-lasting durability. Plus, the serrated flange design provides a strong grip and reduces vibration, giving you extra security for critical projects.

What We Like
Highly corrosion resistant
Durable marine-grade steel
Strong anti-vibration grip
Suitable for harsh environments

Swpeet 165Pcs Stainless Steel Flange Nuts Kit

S573
silver
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

75 PCS M3 - M8 Stainless Steel Hex Flange Nuts

LHUIDDH
101075
Silver
75 PCS M3 - M8 Stainless Steel Hex Flange Nuts Cover
75 PCS M3 - M8 304 Stainless Steel Hex Flange Nuts Set

The LHUIDDH Flange Nuts Set is expertly crafted from 304 stainless steel, ensuring that you receive corrosion and rust-resistant nuts that are designed for durability. This extensive set includes 75 nuts of various sizes, which means you can easily find the right fit for your projects. The reliable connectivity provided by these flange nuts is essential for tight connections in engineering tasks. Plus, the serrated design guarantees even force distribution, preventing any slipping and ensuring a secure lock for your applications.

What We Like
Durable stainless steel construction
Corrosion and rust-resistant
Includes various sizes
Reliable connectivity
Serrated design for secure locking
#TOP 8

YEEZET 240PCS Stainless Steel Flanged Bolt Kit

YEEZET
Acier inoxydable 304
YEEZET 240PCS Stainless Steel Flanged Bolt Kit Cover
YEEZET 240PCS M5 M6 M8 Flanged Bolts and Nuts Kit,Stainless Steel 304 Metric Flanged Hex Screws Nuts Includes 14 Most Common Sizes

The YEEZET Flanged Bolt Kit is constructed from high-quality 304 stainless steel, ensuring resistance to rust, moisture, and corrosion. This durability means you can trust these screws for various applications without worrying about degradation. With 14 commonly used sizes available, you’ll find the perfect fit for your projects, whether they are DIY or professional. Additionally, the plastic packaging doubles as a storage box, keeping your screws and nuts organised and easy to access, making your work more efficient.

What We Like
High-quality stainless steel material
Variety of common sizes
Durable plastic storage box
Versatile for many applications
Buying Guide Image

Frequently Asked Questions (FAQs)

1. 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.

2. What is a flange nut used for?

Flange nuts are commonly used to speed up assembly operations or in areas where their larger bearing surface can cover oversized holes or slots The additional bearing surface also serves to distribute the pressure of the nut over the part being secured, reducing the chance of damage or to loosen.

3. 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.

4. Are flange nuts self locking?

The self locking feature of this flange nut has many advantages in ensuring that the bolt is not damaged. The locknut has a high resistance to temperature and can be used in volatile environments with temperatures ranging between -200°C and 400°C.

Editor's Notes

During our stainless steel flange nut research, we found 306 stainless steel flange nut products and shortlisted 8 quality products. We collected and analyzed 6,682 customer reviews through our big data system to write the stainless steel flange nuts list. We found that most customers choose stainless steel flange nuts with an average price of £8.70.

The stainless steel flange nuts are available for purchase. We have researched hundreds of brands and picked the top brands of stainless steel flange nuts, including Othmro, Lemiyoo, SZSLMY, Hilitchi, Universal Hardware.

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.