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Washers - Imperial and Metric
Used in a variety of applications with nuts and bolts
A washer is a metal ring that sits either at the inside surface of a nut or underneath the bolt/screw head. As the nut tightens to the bolt it presses up against the material it is being fastened to. This allows for a few of things to occur. First, the washer spreads out pressure from the bolt head or nut onto the material making it less likely to cause damage. It also prevents pull-though (a process where the surface area cannot handle the pressure and the fastener slides through the material). Second, the washer can act as a flat surface for the nut to tighten against if the bolt hole was drilled at an angle. Third, the washer can act as a spacer or (in the case of a rubber washer) a seal when appropriate pressure is applied.
Conical Belleville Washers
Vibration Reducing Washers used to Add Pre-Load
Belleville washers (also called Belleville Washers, Disc Springs, Spring Washers, Conical Washers, Cupped Spring Washers, or Conical Spring Washers) are used to add a layer of vibration resistance and pre-load to a bolt assembly. The conical shape applies a spring force against the bottom of the bolt head to help prevent accidental loosening after installation. Belleville washers can be stacked below a bolt head to add more force to the assembly if needed. Conical washers are commonly used in the automotive and machinery industries.
Conical belleville washers are available in 18-8 Stainless Steel.
For more information on Conical Washers read our "What Are Belleville Washers?" Blog Post.
Thicker Washers used in Construction
Dock Washers are used in construction applications where a thick, low carbon washer is needed. They are heavy duty washers, similar to fender washers, but available in much larger sizes. Most dock washers come with a hot dip galvanized finish. The corrosion resistant finish makes these washers optimal for marine applications.
Dock washers are available in Hot Dip Galvanized Steel.
Standard Washers in a Variety of Materials and Finishes
A flat washer is a thin ring with a round outer diameter and a center hole (inner diameter) punched to a size just larger than a bolt or screw. Flat washers are normally used to distribute loads of threaded bolts, screws and nuts evenly as the fastener is tightened. While there are many types of flat washers, standard are the most commonly used.
Standard flat washers are available in 18-8 Stainless Steel, 316 Stainless Steel, Zinc Plated Steel, Black Oxide Stainless Steel, Hot Dip Galvanized Steel, Brass, Silicon Bronze, Aluminum, Chrome Plated Steel, Black Chrome Plated Steel and Plain Steel.
Extra Thick Flat Washers
Flat Washers with a Greater Thickness that Standard Washers
Flat washers are normally used to distribute loads of threaded bolts, screws and nuts evenly as the fastener is tightened. These extra thick flat washers are used in decks, docks and large timber projects. They add extra support to a fastener assembly and are likely to reduce the risk of damaging the fastened material. Extra thick flat washers can handle the force generated by tightening larger fastener and more load placed on the material itself.
Extra thick washers are available in 18-8 Stainless Steel and Zinc Plated Steel.
Flat Washers with a Larger Outside Diameter
Fender Washers are used to prevent pull-though and provide a greater weight bearing surface under the fastener. This prevents nuts, bolts or screws from pulling through base material. Fender Washers are distinguished from standard flat washers by their significantly larger outside Diameter (or OD), which creates a larger surface area on the fastener assembly, allowing it to withstand more force. Fender Washers are commonly used to distribute load force on sheet metal, and gain their name from the use on car fenders. Due to their large size they are also used to allow fasteners to connect where rust or damage has made the hole bigger.
Fender Washers also come in an extra heavy variety. Extra heavy fender washers are similar to a standard fender washer, however they are significantly thicker for heavy duty applications, and can prevent the need to stack thinner washers.
Fender washers are available in 18-8 Stainless Steel, 316 Stainless Steel and Zinc Plated Steel.
Extra Thick Fender Washers
Thicker Flat Washers with a Larger Outside Diameter
Extra Thick Fender Washers are much thicker than a standard Fender Washer (For Example a 1/4" x 1-1/4" Standard is 0.050 inches thick, whereas an Extra Thick is Max 0.125 - Min 0.100 inches). They can also be used to fasten holes that are too large or have rust around the edges.
Extra thick fender washers are available in 18-8 Stainless Steel.
Finishing Cup Washers
Rounded Washers that Run Flush with the Installed Screw Head
Finishing cup washers are used to provide a finish and smooth look where the fastener head is flush with the top of the washer. Used primarily for their aesthetic look, they are also used under the head of flat or oval head countersunk screws. Due to these screws head shape they would otherwise be slightly exposed.
Finishing cup washers are commonly found on finished decorative applications such as furniture.
Finishing cup washers are available in 18-8 Stainless Steel, 316 Stainless Steel, Silicon Bronze, Black Oxide Stainless Steel and Brass.
Split Ring Lock Washers
Lock Washers with a Helical Shape that Prevenet Accidental Loosening
Split ring lock washers are used to prevent nuts, bolts and screws from vibrating loose. Lock washers are split at a certain point and bent giving them a helical shape. These lock washers are compressed during installation adding extra pressure to the nut or bolt and material. This extra pressure creates a resistance to rotation. The edges or the split may add extra holding power by digging into the nut. Split ring lock washers are used where constant vibration occurs.
Split ring lock washers are available in 18-8 Stainless Steel, 316 Stainless Steel, Zinc Plated Steel, Black Oxide Stainless Steel, Silicon Bronze and Aluminum.
High Collar Split Ring Lock Washers
Extra Thick Lock Washers
High collar split ring lock washers are designed to fit under the head of a socket cap screw. A split washer or a spring lock washer is a ring split at one point and bent into a helical shape. This causes the washer to exert a spring force between the fastener's head and the substrate. The exerted force helps adds resistance to the nut or bolt making it harder to loosen. High Collar lock washers are primarialy used where fasteners are likely to vibrate.
Applicable standards are ASME B18.21.1, DIN 127B, and United States Military Standard NASM 35338 (formerly MS 35338 and AN-935).
High collar split ring lock washers are available in 18-8 Stainless Steel and Zinc Plated Steel.
Internal Tooth Lock Washers
Lock Washers with Internal Locking Teeth
Internal tooth lock washers are for locking and tension. Teeth on the inside diameter of the washer provide locking tension by "biting down" on the assembly. This tension adds resistance to rotation that may be caused by vibration. Internal Tooth Lock Washers are used to lock assemblies underneath the head of the fastener, and are often chosen over external tooth lock washers because of their smooth finished exterior edge.
It is a common mistake to over-tighten internal tooth lock washers in a fastener assembly. To properly install them, the correct amount of tension must be placed on the washer. If the washer is crushed, the teeth will bend flat causing it to act as a traditional washer without the locking mechanism.
Internal tooth lock washers are available in 316 Stainless Steel, 410 Stainless Steel and Zinc Plated Steel.
External Tooth Lock Washer
Lock Washers with External Locking Teeth
External tooth lock washers are used to lock nuts in place. Also known as Star Lock Washers, they are serrated washers that create tension between the washer's teeth and the installation surface. This tension makes the fastener assembly resistant to rotation. External tooth lock washers are used to lock assemblies underneath the head of the fastener or a nut.
It is a common mistake to over-tighten external tooth lock washers in a fastener assembly. To properly install them, the correct amount of tension must be placed on the washer. If the washer is crushed, the teeth will bend flat causing it to act as a traditional washer without the locking mechanism.
External tooth lock washers are available in 316 Stainless Steel and 410 Stainless Steel.
Washers that Create a Seal Beneath the Screw or Bolt Head
Roofing Washers have a neoprene EPDM portion on one side. When they are tightened down, the rubber portion compresses forming a seal. They are used with sharp point and self drilling TEK sheet metal screws to make a watertight seal around the screw and metal roofing or siding. These are used to fasten metal roofing and metal siding to metal or wood studs or truss systems for a watertight seal on pole barns, metal buildings, sheds and homes.
Roofing washers are available in 18-8 Stainless Steel and 316 Stainless Steel.
Plate and Beveled Square Washers
Square washers are washers with a greater resistance to movement than a regular washer once fastened. Due to their larger surface area, more contact can help to hold the washer in place. Commonly used to limit the effect of vibration from loosening a fastener assembly. Square washers are similar to fender washers but have a much larger profile and feature a square shape.
Square washers are shown to function better in earthquakes and are recommended for buildings where seismic activity is likely. Regular washers had a higher pull-though and split rate in this type of application making square washers the optimal choice. Square washers also come in beveled varieties.
Square washers are available in 316 Stainless Steel and Hot Dip Galvanized Steel.
AN 960C Flat Washers
Washers That Fit Air Force & Navy Aeronautical Standards
A 900 series washer look similar to standard flat washers. 900 Series washers feature a smaller outside diameter (OD) that make them acceptable for specific applications. AN960C 900 Series Flat washers are available in standard and light (L) thicknesses. AN960C Flat Washers and are used in military applications. AN 900 series washers meet standards for the Navy and Air Force, which is where the washers receive the "AN" name.
AN 960C Washers are available in 18-8 Stainless Steel.
Military Standard Flat Washers
Fit Military Specifications | 800 Series
The overriding characteristics of military flat washers compared to commercial products is the extensive inspection and lot tractability, guaranteeing the chemical, physical and dimensional qualities. While commercial fasteners may look similar and happen to pass many tests given MS washers, the commercial fasteners lack the pedigree of guaranteed quality for chemical, physical and dimensional aspects that users who order MS flat washers rely on.
800 Series Military Washers are available in 18-8 Stainless Steel.
NAS Flat Washers
Washers that Meet National Aerospace Standards
NAS Washers feature a smaller Outside Diameter (OD) and Inside Diameter (ID) as per the National Aerospace Standards. NAS flat washers are standardized for use with aircrafts and military applications requiring National Aerospace Standards.
National aerospace standards (NAS) flat washers are available in 18-8 Stainless Steel.
F436 Washers Used in Structural Applications
A Structural F436 flat washer has a round outer diameter with a center hole (inner diameter) punched to be just larger than the bolt or screw size. Structural flat washers are thick, strong heavy duty washers that are typically used for creating structures through steel to steel structural connections. They are often applied alongside structural bolts and nuts to metal beams and girders. Compatible with A325 and A490 Structural Bolts.
Structural washers are available in Plain Steel.
Structural Certifications available upon request. Contact us
All About Washers - Types & Materials, USS vs SAE | Fasteners 101
All About Washers - Types & Materials, USS vs SAE Transcript
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Bob: Welcome back to Albany County Fasteners - Fasteners 101. I'm Bob and today we're going to be discussing washers. Let’s get started.
So first we're going to go through are different materials that washers come in. The first washer I have is brass. Brass is used in many different applications. Specifically, in plumbing; hot water applications.
The next one is silicon bronze. Silicon bronze are mostly use in salt water. Boats and things of that nature. Where they don't want any type of corrosion at all. Very non-corrosive material, silicon bronze. Also, silicon bronze does, over time, get a patina to it. So you will see a discoloration just like you look at brass gutters. You get the same thing. You will see a patina. This will change color over time.
Next, I have here, stainless steel black oxide. This is a standard 18-8, 304 stainless that has been sent out for chemical treatment to make the stainless black. This material is 316 stainless. You can use this material in saltwater applications, high salt air applications. Anywhere where you have high salt content where you don't want the fastener to rust. This is the product you would use.
This is an 18-8, 304 stainless flat washer. This is the most common stainless used on many, many fasteners. This is something you would use in fresh water applications.
The next one I have is this plain alloy. This is a structural flat washer that is used with structural bolts. Structural steel applications; there is no coating. If it is exposed to the elements it will rust and you will see pitting over time.
This is a yellow zinc flat washer - Grade 8. These washers can be used outside. For an extended time, however, these are hardened washers. You will see rust over time. But they will rust slowly. You will see the pitting along with rusting on the edges. Things of that nature. Grade 8 is basically a hardening of the steel which is heat treated and the washer then is put through a coating process.
This is a standard flat washer in zinc coating. These are most commonly standard alloy steel that have a zinc coating on it. These can be used in any application that is indoor. You can use that on outdoor, exterior, applications but in an exterior application, again, you're going to see rusting.
And the last one I have is hot dip galvanized. These are dipped in a hot molten (zinc) galvanized coating. These are plain alloy underneath and then are dipped in the hot dip galvanized zinc. That basically coats the washer, so you won't see any rusting in a short period of time. You'll find these washers used in many highway applications like Jersey barriers, guard rails, lamp posts, all types of applications. The city uses these and state and government to save money because it's cheaper than using stainless steel. This is just another type of application. These you probably won't see rust until after about 10 years.
I have here some other assorted washers. The first one I have is what they call a split ring lock washer. This is what they call a medium split ring. It's really the standard (split ring) washer. This is a half inch diameter - internal diameter 1/2". This is your standard lock washer. Split ring, the split ring, it's a ring that's been cut on the edge there and then twisted. So when you lock a nut down, it locks the nut in place. It's good to use these with a flat washer so if you took a nut, I mean a bolt, and you put a washer on it and then you put a nut on it that's basically the way that you would use a lock washer. You can see the washer there and as you tighten or torque down on this, it's going to flatten that out and put pressure on the nut, so it can't vibrate loose.
Then we have, what they call, a high collar lock washer. High collar is substantially thicker. You can see that this'll put a lot more pressure on the nut, so the nut cannot vibrate loose. The high collars are a lot harder to flatten out as you're torqueing down on the nut.
The next lock washer I have, this is called an external and its mate is the internal (tooth lock washer). So the external (tooth) lock washer has these little prongs on the outside. If you look at them, they are a little bit bent and when you put this on and then you put the nut on, and you tighten it, the nut locks into these little prongs.
This is what they call an internal (tooth lock washer), where the prongs are on the inside not on the outside. Giving the outside a nice finish. What you're looking at when your finished project is complete. So, internal lock washer, external lock washer, there are different applications for these two types of washers. There's so many of them you'll just have to decide which one works best for you.
This is an EPDM washer. This is a washer that is used on roofs; metal roof systems. You can see on this side it has stainless steel and, on the backside, EPDM rubber. How these are used: this is a half inch diameter. If you were using a lag screw with this washer, I would put this washer on like this, and they fit on very tight and snug, as you can see. They just slide up there and you see it fits nice and tight against the head so there's no gap. That rubber is tight up against the shank of the lag screw. So there'll be no water leakage. Should water come down go under and get behind there it's not going to come down between the shank. It's gonna give a complete seal. That's a EPDM washer.
The next washer I have is a cup finishing washer. And a cup finishing washer, basically you would use a flat head screw; wood screw, sheet metal screw, an oval head sheet metal wood screw. You would use (one of those) to give a nice finished look to the product that you are building. You can see in the back, that would be the back of a cup washer. It's just formed. This comes in several different materials. You can get them in Zinc. You can get them in 18-8 stainless, 410 stainless, also in 316 stainless.
This is a metric flat washer. Metric basically falls under SAE diameters on the outside diameter. So if I showed you a regular U.S. Stainless steel, and this is stainless, USS flat washer, you can see the differences in the diameters. Metric's are going to be smaller on the outside. Basically, following an SAE type of dimension cut. I'm gonna put it right over so you can see the differences in these. You can see how much larger a USS stainless steel flat washer versus a metric flat washer. You get more diameter, outside diameter on a USS versus a metric washer.
I have here some additional washers. I have what they call a fender washer. Fender washers are typically substantially larger than a standard washer. Here's a standard stainless steel washer. Here's a fender washer. You can see the outside diameter is larger than the other washer; than the standard washer. You can get these diameters in several different outside diameters. So, typically, a fender washer is used in applications where you want to have some type of large surface to grab. These are very commonly used. Fender washers are made from blanks. Scrap material is the typical material that fender washers are made from. That's why you'll always find different thicknesses in fender washers because whatever material is left over, from whatever else they are manufacturing, those will be used in fender washers.
This is a beveled washer. This also has hot dip galvanize on it. Many different types of applications this is used in. This is also used in exterior applications.
This is a dock washer. Dock washers are used in docks, boat docks. Things like that, where they're putting bolts through, lag screws through, and they want to grab a big surface. I have another washer on here right now, but I just wanted to show you what it would look like, or I have also, that's a hex cap screw. That'll give you an idea of what a dock washer looks like through a bolt and typically you're putting a lot of wood together probably with threaded rod. Many different applications for dock washers and they're very, very thick.
This is what they call a square washer. That'll give you some depth and idea of what it looks like on the bolt. This is a regular washer I'm going to put on before it, slide it on there, so you can get an idea there what it looks like. Again, these washers are used a lot in any type of railroad tie applications, landscaping; many different applications that these are used in.
We have here two different types of sizing for washers. All four of these washers are half inch ID, inside diameter, however you will see this is a USS. This one here is a USS flat washer and this one here is an SAE flat washer. So you can see when I put the holes over each other you can see the inside diameters are the same, however, the USS is a lot larger on the OD, the outside diameter. Now these are flat washers, so if you order an SAE flat washer, you're going to get this one, the smaller one. And this is a larger which is the USS outside diameter. That's in standard zinc. Then I also have them in yellow zinc. The same thing which are basically grade 8 flat washers. Same thing you can see here where you have an SAE versus a USS right here.
This is the SAE grade 8 or what they call grade C in flat washers, which is equal to a grade 8. Okay, so what I have here are extra thick washers. I have a standard stainless steel washer here. You can see the thickness of the two different washers. I'm willing to try to do this as best I can for you, but you can see here the difference in thickness. This one here is a standard washer thickness and this is an extra thick stainless steel washer. You can see the substantial difference. It's probably almost two and a half, three times, the standard washer (size) - the extra thick washer is. They also are available in fender washers. So again, they're about two to three times as thick, the extra thick washers. They do come in fender washers. We also have them in grade 8. SAE. Extra Thick. You can see the difference between, this is the standard and this is the extra thick. In that situation it's definitely three times. not two and a half times like the stainless but like three times thicker than the standard SAE flat washer.
In stainless we have many different standard washers, as they're called. This is a standard washer as I've shown you before in stainless steel, this is a half inch diameter and then we have several all the ones, this is what they call an MS washer. This is a military spec washer, so this is one of those. They come in many different sizes and dimensions. We also have what they call an NAS Washer. National Aerospace Standard. And that's what these are, these little washers but they come in many different sizes you can check our website for that.
We also have what they call an AN 900 series flat washer. These again are special sizes and diameters. So you would have to look into our website to find exactly what you're looking for as far as that goes.
Then we have a stainless, what they call a "backup" rivet washer. These are used in conjunction with rivets. They're (used) to back up the backside of a rivet when you want to add some more support to the rivet itself.
Basically, that concludes our washer video.
Extra Thick Vs. Standard Flat Washers
Standard Vs Extra Thick Flat Washers Transcript
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Bob: Welcome back to Albany County Fasteners - Fasteners 101. I'm Bob and today we're going to discuss washers. Let's get started.
What I have here are extra thick washers. I have a standard stainless steel washer here, you can see, the thickness of the two different washers. I'm going to try to do this as best I can for you, but you can see here, the difference in thickness. This one here is a standard washer thickness and this is a extra thick stainless steel washer. So you can see the substantial difference. That's probably almost 2-1/2 - 3 times the standard washer. The extra thick washer is.
They also are available in fender washers.
So again, they're about two to three times as thick - the extra thick washers. We also have them in grade 8, SAE, extra thick. You can see the difference: between this is the standard and this is the extra thick and in that situation it's definitely three times not two and a half time like the stainless, but like three times thicker than the standard SAE flat washer.
How To Install Finishing Cup Washers
Finishing Cup Washer Installation Transcript
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Bob: Welcome back to Albany County Fasteners - Fasteners 101. I'm Bob and today we're going to talk about cup washers. So let's get started.
So I have here cup washers which are, basically, a finishing cup washer. These are Black Oxy. So they have a black finish on them. I'm gonna slide it right over the head (of the screw). You can really see how nice those look, okay. Really cool finish. I'm just going to slide it in here for the purpose of seeing it and you can see how nice that finishes off; gives you a nice complete finish for the fastener itself. I just wanted to demonstrate that to you and that's in the black oxy finish.
Now I have another one, if I can get this out. So I also see we got here so I have a brass flange, I'm sorry incorrect, cup washer, finishing cup washer and this one here I'm going to drive in, this is an oval head screw. You can see this is an oval head and these finish very nicely inside.
I'm going to drive this down. It's a little crooked but it's straightening out now. You don't want to go too far with that. So you just want to get the cup washer and you just want to snug it down a little bit because if you continue to drive it, it's going to flatten out and embed the cup washer into the wood.
This is a softwood, obviously, I'm using here. This is just for demonstration purposes on how it would look.
The next one I'm going to do is stainless. There are three different types of stainless. I have what they call a cup flange. This has, this one here has, this little flange around the edge here. Or we have an 18-8 standard this has no flange on it.
This is a standard cup washer. So you can see the finish of a standard cup washer. Which just looks like that. This (screw) is in a flange cup washer it's a little more decorative as far as the look goes. It also grabs more material if you're trying to hold something in place. I'll put the other one back on again.
I'm going to show you again. There you go. That's a standard (cup washer). The flange do not come in 3/16 stainless but the standard Cup finishing washer does come in 316 stainless. It's also available in 410 stainless.
So I'm going to use, for this particular one, I'm going to drive in the one with the flange so you can see the way that this is going to look. I'm gonna screw that in now and this is an oval head screw also.
Perfect. That's basically a nice-looking finish and I'll show you that when I'm done here. We have one more that we're going to screw in. This is a flat head, silicon bronze slotted flat head, you can see here. We have these in all these different finishes. We have it in black oxy, stainless steel, stainless steel cup flange, brass. So we have it in many many different finishes.
There we go. Perfect, let's take this out now. I'm going to show you the way they look nicely finished. There you go and that's the finish and that's what it looks like. Thanks for watching.
Military Flat Washer Specifications
|Washer Size||Inner Diameter (ID)||Outer Diameter (OD)||Thickness|
|#0-801||Max 0.078" - Min 0.075"||Max 0.187" - Min 0.185"||Max 0.025" - Min 0.016"|
|#2-802||Max 0.093" - Min 0.090"||Max 0.250" - Min 0.200"||Max 0.025" - Min 0.016"|
|#4-803||Max 0.125" - Min 0.115"||Max 0.250" - Min 0.230"||Max 0.028" - Min 0.027"|
|#4-804||Max 0.125" - Min 0.115"||Max 0.312" - Min 0.302"||Max 0.040" - Min 0.025"|
|#6-805||Max 0.156" - Min 0.150"||Max 0.312" - Min 0.302"||Max 0.048" - Min 0.027"|
|#6-806||Max 0.156" - Min 0.150"||Max 0.375" - Min 0.365"||Max 0.065" - Min 0.036"|
|#8-807||Max 0.187" - Min 0.177"||Max 0.375" - Min 0.365"||Max 0.065" - Min 0.036"|
|#8-841||Max 0.188" - Min 0.178"||Max 0.438" - Min 0.428"||Max 0.065" - Min 0.036"|
|#10-808||Max 0.218" - Min 0.208"||Max 0.437" - Min 0.427"||Max 0.065" - Min 0.036"|
|#10-809||Max 0.250" - Min 0.240"||Max 0.562" - Min 0.556"||Max 0.080" - Min 0.051"|
|#10-842||Max 0.219" - Min 0.209"||Max 0.500" - Min 0.495"||Max 0.065" - Min 0.036"|
|1/4"-810||Max 0.281" - Min 0.271"||Max 0.625" - Min 0.615"||Max 0.080" - Min 0.051"|
|1/4"-811||Max 0.312" - Min 0.302"||Max 0.750" - Min 0.730"||Max 0.080" - Min 0.051"|
|5/16"-812||Max 0.343" - Min 0.333"||Max 0.687" - Min 0.677"||Max 0.080" - Min 0.051"|
|5/16"-813||Max 0.375" - Min 0.365"||Max 0.875" - Min 0.865"||Max 0.104" - Min 0.064"|
|3/8"-814||Max 0.406" - Min 0.396"||Max 0.812" - Min 0.802"||Max 0.080" - Min 0.051"|
|3/8"-815||Max 0.437" - Min 0.417"||Max 1.000" - Min 0.950"||Max 0.104" - Min 0.064"|
|7/16"-816||Max 0.468" - Min 0.448"||Max 0.921" - Min 0.901"||Max 0.080" - Min 0.051"|
|7/16"-817||Max 0.500" - Min 0.495"||Max 1.250" - Min 1.150"||Max 0.104" - Min 0.064"|
|1/2"-818||Max 0.531" - Min 0.521"||Max 1.062" - Min 1.000"||Max 0.121" - Min 0.074"|
|1/2"-819||Max 0.562" - Min 0.552"||Max 1.375" - Min 1.325"||Max 0.132" - Min 0.086"|
|5/8"-820||Max 0.656" - Min 0.636"||Max 1.312" - Min 1.302"||Max 0.121" - Min 0.074"|
|5/8"-821||Max 0.687" - Min 0.677"||Max 1.750" - Min 1.650"||Max 0.160" - Min 0.108"|
|3/4"-822||Max 0.812" - Min 0.799"||Max 1.500" - Min 1.450"||Max 0.160" - Min 0.108"|
|3/4"-823||Max 0.812" - Min 0.799"||Max 2.000" - Min 1.900"||Max 0.177" - Min 0.122"|
|7/8"-824||Max 0.937" - Min 0.907"||Max 1.750" - Min 1.650"||Max 0.160" - Min 0.108"|
|7/8"-825||Max 0.937" - Min 0.907"||Max 2.250" - Min 2.150"||Max 0.192" - Min 0.136"|
|1"-826||Max 1.062" - Min 1.000"||Max 2.000" - Min 1.900"||Max 0.160" - Min 0.108"|
|1"-827||Max 1.062" - Min 1.000"||Max 2.500" - Min 2.400"||Max 0.192" - Min 0.136"|
Not sure what material you need? Check out our Material Guide to find the right material for your needs!
Looking for an assortment of multiple sizes, or a selection with matching washers? Shop our selection of Assortments and Kits
To prevent or stop galling (also known as seizing or locking-up) on stainless steel fasteners, we recommend using an anti-seize thread lubricant from our line of MRO Anti-Seize Solutions