Best Steel Flange Nuts in 2026
Daisy
Last Updated: Feb 9, 2026
Daisy
Last Updated: Feb 9, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Eastlo | 9.93 | ✅ | ✅ | ✅ |
Thread Size：#10-24; Thread Pitch: 24 TPI; Thread Type: Coarse Thread UNC
Hex Drive Size: 3/8 inch; Package Includes: 50 PCS
Made of 304 stainless steel 18-8 ( no coating outside) which is superior to regular steel and any zinc plated fasteners, provides good strength and corrosion resistance in bad environments.
Serrations help grip the material surface for easy installation and provide mild vibration resistance.
Height: 0.219 inch or 5.56mm; Flange Diameter: 0.5 inch or 13mm;
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| BC Precision | 9.93 | ✅ | ✅ | ✅ |
Zinc plated for corrosion resistance
Package of 50 pieces
Hex Socket Drive 1/2"
Overall Height .271 Inches
Flange Diameter .6765" Inches
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| BelMetric | 5.58 | ❌ | ❌ | ❌ |
Flange Nuts are fasteners that look like a standard hex nut but the bottom has a widened circular flange or skirt that acts as a built-in washer and distributes the holding power of the nut evenly across the surface for a more secure fastening solution. These types of nuts are designed to remove the deficiencies commonly associated with the use of washers.
The serrations on the nut are meant to dig into the surface of the work to create a more secure connection that resists loosening which also makes it a popular choice with electronics fasteners as they are less prone to damaging fragile, soft metal surfaces as compared to a traditional nut.
M8 - M12 Diameter JIS (Japanese Industrial Standard) Flange nuts have smaller hex sizes than ISO and ANSI type bolts and are commonly used for import cars, auto repair, truck, car, and motorcycle frames, vehicle engines, transmission and exhaust. They are also mostly used for automotive and fastening applications such as steering and suspension parts, cylinder, and flywheels, and also for high strength mechanical applications and forged parts.
The Yellow Zinc restoration quality finish, aside from the golden aesthetic, provides a marginally better protection from rust and corrosion against water contact. The JIS Flange Nut plated yellow zinc is mostly used for high strength automotive applications, machines and machine builders, and also in the mining industry.
BelMetric has been in business for over 40 years providing customers with metric hardware & specialty automotive supplies. We offer an extensive variety of metric fasteners, metric nuts, metric bolts, Time-Sert kits and we stock hard-to-find items like hanger bolts, wing nuts, left hand bolt, 6921 flange bolts, and more.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| BelMetric | 5.53 | ❌ | ❌ | ❌ |
Flange Nuts are fasteners that look like a standard hex nut but the bottom has a widened circular flange or skirt that acts as a built-in washer and distributes the holding power of the nut evenly across the surface for a more secure fastening solution. These types of nuts are designed to remove the deficiencies commonly associated with the use of washers.
The serrations on the nut are meant to dig into the surface of the work to create a more secure connection that resists loosening which also makes it a popular choice with electronics fasteners as they are less prone to damaging fragile, soft metal surfaces as compared to a traditional nut.
M8 - M12 Diameter JIS (Japanese Industrial Standard) Flange nuts have smaller hex sizes than ISO and ANSI type bolts and are commonly used for import cars, auto repair, truck, car, and motorcycle frames, vehicle engines, transmission and exhaust. They are also mostly used for automotive and fastening applications such as steering and suspension parts, cylinder, and flywheels, and also for high strength mechanical applications and forged parts.
The Yellow Zinc restoration quality finish, aside from the golden aesthetic, provides a marginally better protection from rust and corrosion against water contact. The JIS Flange Nut plated yellow zinc is mostly used for high strength automotive applications, machines and machine builders, and also in the mining industry.
BelMetric has been in business for over 40 years providing customers with metric hardware & specialty automotive supplies. We offer an extensive variety of metric fasteners, metric nuts, metric bolts, Time-Sert kits and we stock hard-to-find items like hanger bolts, wing nuts, left hand bolt, 6921 flange bolts, and more.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| GVN Online | 9.89 | ✅ | ✅ | ✅ |
Thread Size: 10mm; Thread Pitch: 1.5mm; Thread Type: Coarse Thread; Thread Coverage: Full Thread
Hex Drive Size: 15mm; Package: 12 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: 10mm; Flange Head Diameter: 21.8mm; Feel free to contact us if you have no idea about what size to choose.
Alternative to a hex nut and an anti-vibration washer. Ideal use for applications under vibration. You could also find the matched screws with different head types in our shop.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| BC Precision | 9.93 | ✅ | ✅ | ✅ |
Zinc plated for corrosion resistance
Package of 40 pieces
Hex Socket Drive 9/16"
Overall Height .324 Inches
Flange Diameter .745" Inches
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Diameter: 7/16"
Material: Steel
Finish: Yellow Zinc
Head Style: Hex Washer (11/16" Wrench)
Thread Type: 14 (Coarse)
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Diameter: 3/8"
Material: Steel
Finish: Yellow Zinc
Head Style: Hex Washer (Hex Socket)
Thread Type: 16 (Coarse)
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Flange Lock Nuts Are One Piece, All-Metal Prevailing Torque Hex Flange Nuts
The Protruding Circular Flange Increases The Nut'S Bearing Surface Allowing Them To Be Used With Irregular And Oversized Holes
Zinc-Plated For Moderate Corrosion Resistance
From The Brand Name: The Hillman Group
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| TICONN US | 9.93 | ✅ | ✅ | ✅ |
[PREMIUM MATERIAL] Our TICONN rivet nut kit is made from premium quality zinc plated carbon steel. Guaranteed worry-free rust-free user experience.
[COMPATIBILITY] The rivet nuts are compatible with most rivet nut tools on the market. Knurled under the flange design made them easier to be applied and stay in place without moving
[SIZE INCLUDED] This rivnut tool kit includes SAE UNC 1/4"-20 rivet nuts 70pcs
[WIDE APPLICATION] These rivet nuts can be applied to many different kinds of materials such as sheet metal, steel plates, aluminum plates, stainless steel plates, plastic sheets, and fiberglass sheets. Great for auto maintenance aftermarket modification and DIY hobby projects
[TICONN BRAND QUALITY COMMITMENT] – We stand behind the quality of our products. If for any reason you are not satisfied with your purchase, please contact us. We provide 30-day money back and 12-month warranty. 100% Satisfaction Guarantee for risk-free shopping!
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Bcp Fasteners | 2 |
| Bel-Metric | 2 |
| Hard-To-Find Fastener | 2 |
| Eastlo | 1 |
| Glvaner | 1 |
| The Hillman Group | 1 |
| Ticonn | 1 |
We've carried out a comprehensive analysis of 414 reviews on flange nuts, using our selection criteria to identify the best options in the fasteners. Our findings reveal that most customers typically select flange nuts priced around $12.04, with top brands including spzcdza, eastlo, glarks, aleoed, the hillman group, hard-to-find fastener, yugtcen and roycemart and stormcube
Our team of expert editors reviewed these high-quality items and handpicked the top 10 flange nuts for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the fasteners category. These include xia men hai rui peng, eastlo, connectors & wire & tools, aleoed, amazon.com, yugtcen and roycemart and firecat .
We are dedicated to assisting our users in finding the right nuts Products based on their needs, saving them considerable time when choosing which flange nuts to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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