Nuts - Nut Fasteners & Nut Hardware

Welcome to the comprehensive Nuts category at, where you'll discover a versatile range of high-quality nut fasteners and nut hardware tailored to your specific needs. We offer a variety of nuts, including acorn cap nuts, high crown cap nuts, and extra tall acorn nuts.

These nuts are available in stainless steel, nickel-plated steel, chrome-plated steel, and brass materials. You can use them for different purposes and to achieve different aesthetics.

Shop Our Extensive Selection of Nuts Online at

Not sure what material you need? Check out our Material Guide to find the right material for your needs!

Learn how to secure objects using castle nuts. Connect two male threads by using coupling nuts. Improve weight distribution by using hex flange nuts.

For specialized requirements, we offer hex jam nuts, square nuts, nylon insert lock nuts, and more. Our nuts come in many types to help with your projects. We have t-nuts for wood and tri-groove security nuts for extra protection.

Our nuts come in different sizes and thread pitches to match your project needs. We make our nuts for all types of projects, from DIY at home to industrial jobs. They keep things secure and fastened reliably.

With easy online ordering and fast shipping, makes it simple to find the right nuts for your needs. Explore our extensive selection today and discover the perfect nuts for your next project.

Types of Nuts Available at

Acorn Nuts

Acorn cap nuts have a rounded top and give a nice look to connections. They also protect the threads of the screw. Available in sizes from #4-40 to ¾"-10 and materials like stainless steel, nickel-plated steel, chrome-plated steel, and brass.

Acorn Cap Nuts Video

High Crown Cap Nuts

High Crown Cap Nuts have a tall domed top that sticks out more from the male fastener for a polished look. Choose between rounded dome top and flat top designs in sizes from ⅜"-16 to ½"-13, crafted from durable 18-8 stainless steel.

High Crown Cap Nuts Video

Extra Tall Acorn Nuts

Extra Tall Acorn Nuts are a combination of traditional acorn cap nuts and extra tall ones. The extra tall nuts have tall domed tops and deep threading inside. Available in sizes from #10-24 to ½"-13, exclusively made from 18-8 stainless steel.

Extra Tall Acorn Nuts Video

Extra Tall Flat Cap Nuts

Extra Tall Flat Cap Nuts, akin to extra tall acorn nuts but with a distinctive flat cap, are your ideal choice when aesthetics and corrosion resistance are paramount in your design. Crafted in the USA from robust 18-8 stainless steel, these nuts are available in a variety of sizes ranging from ⅜”-16 to ½”-13, with different length options.

This versatility sets them apart from standard acorn nuts and high crown nuts, which typically come in a single standard length. With these extra tall flat cap nuts, you have the freedom to tailor your fastening solutions to your specific needs. Trust in the quality of American craftsmanship for your projects; all extra tall cap nuts from Albany County Fasteners are proudly Made in the USA.

Extra Tall Flat Cap Nuts Video

Coupling Nuts

Coupling Nuts, also called extension nuts, connect male fasteners together. People often use them to join threaded rods of the same size. Choose from materials like stainless steel, hot-dip galvanized steel, zinc-plated steel, and aluminum.

Coupling Reducer Nuts Coupling Reducer Nuts, akin to standard coupling nuts, fulfill the role of joining male threaded fasteners. The distinction lies in their ability to connect fasteners of varying sizes. Beyond this, their operation and intent remain consistent with that of regular coupling nuts. Installing coupling reducer nuts mirrors the process of using standard hex nuts and is employed to extend shorter threaded rods into more extensive rod assemblies. Please note that our coupling reducer nuts are exclusively available in zinc-plated steel, serving your threaded connection needs with quality and reliability.
Hex Flange Nuts - Serrated and Non-Serrated

Hex Flange Nuts, have a wide flange that acts as a washer. They spread the load over a larger area. Serrated flange nuts enhance grip, while non-serrated excel at even load distribution. Available in various stainless steel grades and zinc-plated steel.

Hex Jam Nuts

Hex Jam Nuts, are thinner than standard hex nuts and work well as lock nuts because of their slim profile. They complement other nuts to lock positions and fit in tight spaces. Find them in stainless steel, zinc-plated steel, brass, and silicon bronze.

Hex Jam Nuts Video

Hex Nuts

Hex Nuts are common and versatile, with a hexagonal shape for easy installation using regular tools. We have various sizes and materials in stock, like stainless steel, zinc-plated steel, brass, aluminum, and more.

Thumb Nut

Knurled Thumb Nuts, the ultimate in hassle-free installation. These circular gems boast an exterior surface with a unique knurled pattern that lets you tighten or loosen them by hand. No tools needed!

Perfect for those moments when aesthetics matter most or when you need a quick, adjustable fastening solution. Our knurled thumb nuts are available in 18-8 Stainless Steel and Brass, ensuring you have the right style for your project.

Machine Screw Nuts

Machine Screw Nuts are your go to nuts! These hex finish nuts are specially designed for screws with diameters under 1/4". They're just like standard hex nuts but compact, making them a perfect fit for smaller projects.

Use them when your screws extend beyond a threaded hole, especially if that hole isn't pre-threaded. Our machine screw nuts come in various materials, including 18-8 Stainless Steel, 316 Stainless Steel, Brass, Zinc Plated Steel, Black Oxide Stainless Steel, Silicon Bronze, and Plain Alloy Steel, giving you options for any job.

Small Pattern Machine Screw Nut Small Pattern Machine Screw Nuts are great for tight spaces! These nuts are just like standard machine screw nuts but designed for confined areas. They have a smaller wrench size, making them perfect for tight spots. Small pattern machine screw nuts come in 18-8 Stainless Steel and Zinc Plated Steel options, so you're covered for any space-constrained job.
Square Nuts Square Nuts, with their four sides, offer more contact area with your components, ensuring a secure hold that won't easily loosen. While they resist loosening effectively, they may require more effort to tighten. Square nuts are commonly used alongside square-headed bolts and flat washers. Find them in various materials, including 304 and 316 stainless steel, zinc-plated steel, and hot dip galvanized steel.
T-Nuts T-Nuts, also known as tee nuts or barrel nuts, are perfect for softer materials like wood and plastics. Shaped like a "T," they feature an internally threaded bore with prongs that firmly grip the material when joined with a male fastener. This ensures a secure connection that's unlikely to come loose. Most T-nuts have either 3 or 4 prongs, which reduce the risk of material splitting or cracking. Ideal for furniture assembly, T-nuts are available in 304 and 316 stainless steel, as well as zinc-plated steel.
Wing Nuts Wing Nuts are a unique type of nut featuring two outwardly extending wings, allowing effortless hand-driven installation and removal. They find common use in applications where joints require frequent adjustments or when a non-permanent connection is needed. Some wing nuts come with flanged bodies, enhancing contact with assembled components. Available in various materials such as 304, 316 stainless steel, A2 stainless steel, zinc-plated steel, brass, and zinc alloy.
Castle Nuts

Castle Nuts, also known as castellated nuts, resemble medieval battlements and serve in low-torque applications. They secure with a cotter pin or safety wire through their slots and a drilled hole in the bolt. Available in 304 stainless steel and brass.

Keps K Lock Nuts

Keps K Lock Nuts combine a standard hex nut with a lock washer and streamline component assembly. The conical washer's tiny "teeth" grip the surface, preventing loosening. Choose from 304, A2 stainless steel, and zinc-plated steel.

Non-Serrated Hex Flange Cone Locking Nut Hex flange cone lock nuts have a washer-like flange. They also have special threads that help them stay tight and resist loosening from shock and vibration. Available in plain steel for secure fastening.
Nylon Insert Lock Nuts Nylon Insert Lock Nuts are your solution to preventing unwanted loosening! These nuts have a standard hex shape but have a handy nylon insert at the top. The magic happens as you secure them onto your bolt or screw. The nylon insert molds to the threads, creating a locking effect. It's like a hug that keeps things snug and resists vibration and cross-threading. Choose from various materials like stainless steel, zinc-plated steel, and more to suit your needs.
Projection Hex Weld Nuts Projection Hex Weld Nuts are great for thin or one-sided materials, creating threaded holes when tapping is not an option. Spot weld them and use screws for assembly. Choose from short or long projection options in plain steel.
Break Away Shear Nuts

Shear Nuts (Tamper Proof Security Nuts) create permanent, tamper-proof joints. Once you tighten the nut, you cannot loosen it because of its conical shape and breakaway hex. Available in 304 stainless steel and Zamak 5 zinc alloy.

Installing Breakaway Shear Nuts Video

Removing Breakaway Shear Nuts Video

Slotted Hex Nuts Slotted Hex Nuts are like castle nuts but shorter. A cotter pin secures them through slots and a hole in the fastener. Available in plain steel.
Prevailing Torque Lock Nuts Stover lock Nuts have a rounded top, flat bottom, and wax-treated threads. They resist shock and vibration and prevent galling during installation. Find them in zinc-plated steel.
 Tri Groove Security Nuts

Tri Groove Security Nuts have a special shape that makes it hard to remove without the right tool. They offer tamper-proof security without needing a hex key. They require a unique tri-groove socket for installation and are available in 316 stainless steel and zinc alloy.

Installing Tri-Groove Nuts Video

Two Way Reversible Lock Nuts Two Way Reversible Lock Nuts have a unique thread in the middle. This enables users to use them in any direction. Designers create them to prevent joints from coming loose. Available in 18-8, 316 stainless steel, and zinc-plated steel.
Well Nuts

Well Nuts consist of rubber and brass and users can remove them. People often use them in water applications. They serve as a barrier against galvanic corrosion and provide shock absorption in various environments.

How Do Well Nuts Work Video

Choosing the Right Nut Type at

To select the optimal nut for your application, consider factors such as:

  • Joining materials
  • Space constraints
  • Adjustment needs
  • Vibration levels
  • Aesthetics
  • Security requirements

Our customer support team at can help you find the right nut for your project. They know about nut types, sizes, thread pitches, and materials. Reach out to us via chat or call (866-573-0445) for personalized recommendations.

Nut Hardware FAQ

How do I choose the right nut type for my application?

Consider the materials you are using. Think about the amount of space available. Decide if any adjustments need to be made. Evaluate the level of vibration present. Lastly, consider the security measures in place. Our customer support team at can help you find the right nut for your project. They know about nut types, sizes, thread pitches, and materials.

What materials are your nuts available in?

We offer nuts in a wide range of materials, including various grades of stainless steel, zinc-plated steel, brass, aluminum, nickel-plated steel, chrome-plated steel, and more. The available materials may vary depending on the specific nut type.

Can I purchase nuts in bulk quantities from

Absolutely! We offer competitive pricing and bulk quantity discounts on our high-quality nut fasteners. Simply contact our customer support team for personalized bulk ordering assistance.

How quickly will my order ship from

We pride ourselves on fast order processing and shipping. Orders ship quickly from our warehouse within 1-2 days for timely delivery of your project needs.

Why Purchase Nuts Online From

  • Extensive Selection: We stock a vast range of nut types, sizes, materials, finishes, and quantities, making your one-stop shop for nut hardware.
  • Get help from our experienced team to choose the right nuts for your project. They have years of knowledge to share.
  • Fast Shipping: Benefit from quick order processing and shipping directly from our well-stocked warehouse for timely project completion.
  • Bulk Discounts: Take advantage of competitive pricing and bulk quantity discounts on our high-quality nut fasteners.

We make nut shopping easy with our unmatched selection, expert support, and commitment to your success. Contact today for assistance in finding the perfect nuts online for your next project!

Helpful Online Nut Videos

All About Cap Nuts: High Crown, Too Tall, & Standard Nuts

Cap Nuts: From Small to Too Tall
All About Cap Nuts Transcript

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Bob: Welcome back to Albany County Fasteners, Fasteners 101. I'm Bob and today we're going to discuss high crown and too tall cap nuts. So let's get started.

I have cap nuts here. I have a standard cap nut that you'll find almost anywhere. I have what they call a high crown and you can see, the crown's a little higher. It's probably somewhere about, I would say about, a heavy 3/8 of an inch taller than a standard cap nut. Then we have too tall. We have a too tall in a flat head and we have too tall in a rounded head.

Now the two tall come fully threaded all the way through the inside to the top. So you have full threads all the way through. You have on the too tall what they call a flat top. You can see the top is flat and it has a chamfered edge around it and on the round the top is just rounded over like the standard cap nut at the top.

They call these too tool because they're approximately, if you took the high crowns, double the height almost. But if you had two high crowns, I don't have two high crowns here but if I did, it would be close to this size and that's why they call it a too tall.

These are USA made products, they're made here in the USA. They're quality products. These are 18-8 stainless steel. They're available on our shelf ready to ship.

The question always comes up "what do I use for different things"? Depends on your application. So many different applications out there. How far is your threaded bolt sticking out on the other end? If it was sticking out that much, you couldn't use a standard cap nut. You're going to see probably about a 1/4" - 3/8" of an inch sticking out. If that was the application. So, then you would go to the high crown.

I'll just keep my finger there as a stop, and that just makes it. Those are the different applications. This one, which is double tall, will keep on going and, just so you know, you will get some gulling because the difference here with stainless steel is that you have a rolled thread on the bolt and on the actual cap nut you have cut threads. So you have two different threads running against each other which creates gulling. You can use some lubricant. That works well.

I just want to show you on this how far this will go in. So you're looking at a good 1-1/2" of this 2" bolt, that I have here. It'll go all the way in to this cap nut and there it is.

As far as applications go, there are many different applications. I've seen these used for - they get polished up - some people will take them and polish them up. Polished stainless is amazing - the way it looks. They'll take them and put them on their trucks and their cars just for the look. It's all dependent on application.

Here at my packaging machine, I want to demonstrate to you how they incorporated a cap nut. This is a standard cap nut. This is the bowl where the fasteners go in. This is a feeder and they used a cap nut, at the top, along with a lock washer to hold this cone in place so the fasteners don't build up and around the center of the machine. Here they used a standard cap nut with a lock washer to hold this cone in place.

You could also, in this application, use any of them. Here's a high crown, that works on there, and here's a double tall. You can use that on there. This is actually a lot easier because sometimes the small little fasteners that we put in this machine, they get underneath this cone a little bit. They jam under there and you have to take this off. That's why they make it so you can screw it off with your fingers. I just used the top round one.

That's pretty cool looking, but functionally it doesn't matter. The standard that comes with the machine, you can see here, the standard cap nut, finishes it off nice. Nothing can build on top during fastener jobs.

Little fasteners, like a two point five millimeter falling on top won't stay on top of this nut. It just falls off and that's just the design. I just wanted to show you on my packaging machine how that could be applied.

How to Use Hex Jam Nuts

How to Use Jam Nuts
Using Jam Nuts Transcript

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Bob: This is what they call a jam nut. Jam nuts are about half the size of a regular finish nut in height. Otherwise the circumference and everything else is the same; they use the same wrench to apply the nut and to remove the nut.

Jam nuts, just to give you an idea what these do, you use two nuts together and then you tighten them up against each other. That's why they call them jam nuts: you use them together, you tighten them up, and I'll show you. I'll do a demonstration of that also, but typically that's how they're used. They're also used in tight areas where you can't have a full-size nut.

So I'm going to demonstrate the installation of the jam nuts that I have here. I have two of them. Jam nuts are also called thin nuts. The difference is that they're about half the size of a regular nut. You can see that here.

I'm going to put the first one on and then I'm going to put the second one on. I'm going to use an adjustable wrench to grab the bottom nut. Then I'm going to use the ratchet on the top to tighten it up.

Now I'm tightening them up against each other. That's one of the reasons why they call them jam nuts. Jam nuts are also available in nylon lock nuts where you don't have to use this situation. Obviously jam nuts can be used in many different applications such as if you have a tight area like in a car application where you don't have the room to use a regular sized nut. They'll use jam nuts or a single jam nut to get on the back of an alternator for a bracket; something along those lines. They also use the nylons in that situation.

So there's many different situations that you can use this in. They also sometimes want to put a jam nut like this to wherever it's keeping in place. They want this whole mechanism to be able to turn and move because they might be a moving arm on this bolt holding it in place. They also are used with shoulder bolts. So you'll find jam nuts used with shoulder bolts a lot on mechanical equipment. However you should know that if this is being used in a vibrating machine or something along those lines, these do have a tendency to loosen apart.

So if you want them to stay use some Loctite or some other locking product to keep them in place like they are here. And that's it.