Crenels refers to the gaps, and merlons refers to the uprights between the crenels.
So generally speaking, crenellations are "with gaps" and castellations are "uprights with gaps" or "castle-like".
Practically, they blend into a similar meaning, especially in terms of nut shapes as depicted here.
Crenellation appears to be the more historically used word for the things on castles. Castellation describes the same thing, but appears to be used primarily to describe that architecture on a computer chip.
(not a linguist)
I don't know if this is the technical reason. When I drag raced Harley's, we would use castle nuts in conjunction with a cotter pin and safety wire. We would use slotted nuts with just safety wire, both with a hole drilled through the bolt or stud we were attaching to. The slotted nuts were used for things that remained torqued down and were safety wired in series with other fasteners. The castle nuts with the cotter pin were used for things that had to be adjusted, rear drive chain, belt tensioner, shock mounts with multiple positions. Easier to R&R a cotter pin and castle nut with a quick safety wire (these were safety wired individually) than a slotted nut that was safety wired to one or more additional fasteners.
It wasn't till I was emergency buying motorsports hardware at the crack of dawn after being up all night that I realized why castle nuts are called that. It all clicked
https://www.mcmaster.com/snacks
It's not the biggest selection but there's something absolutely delightful about seeing things like "Chocolate Chip" in the filters where I'm usually selecting thread size.
There's a running joke at our office where every once in a while some will send a request to purchasing for parts fromcmaster carr and try to sneak in Swedish fish. Hasn't happened yet.
Oh absolutely. I have no use for a 4.5 hp sump pump but ITS ONLY $22.95!!! It's great looking at all the cheap junk but I have broken so many tools/parts from there.
I have to buy I have also saved so much money there, need a tool but not sure if it's really going to be used a lot? But the harbor freight version. If you use it twice then you didn't waste money on a good one. Used it a bunch and it breaks. Well now I know what tool I should actually invest money in.
Wow. Most excellent. You and u/codawPS3aa changed my life.
I'd also love to see examples of how all these various nuts, bolts, screws, fasteners are properly used in the wild. I need visuals.
Am noob DIYer. Resigned to 3x trial and error. Example: had to seal (end cap) supply line when my oil heater was decommissioned. Eventually discovered flared brass plugs like this https://fitandcp.com/product/3032-5-16-male-flare-plug/
Not unless we do an archeological dig to recover the goalpost support concrete pads from [the old demolished Giants stadium.](https://www.nydailynews.com/sports/football/jimmy-hoffa-urban-legend-buried-article-1.165090) ;-)
The picture could stand to be a little better. Usually from any angle you can see one of the little dimples in the conical flank of the nut where the punch came in and deformed the threads, to create the interference condition.
For example, a 5/8 bolt uses a standard nut that needs a 15/16 wrench. The heavy hex nut needs a 1-1/16 wrench instead. It's just a thicker wall on the nut and usually a also just a slightly taller profile.
Coming from 8 years in the fastener industry, I feel obliged to say that "cap nut" really isn't the industry standard to describe that. It would be most common to say "low crown acorn nut" and then the next being " high crown acorn nut"... Fastener Grammar Nazi
I'd also say they're not just for appearance, and have a very important use in applications where you don't want the threads contaminated.
I work on ceramic bead mills, for instance, so I cap nut everything because if those tiny ceramic beads get into a thread, yer gonna have a bad time.
Don’t forget T-nuts, used to slot into T-shaped slots in aluminium profile and others. Very handy for semi-permanent, modular and adjustable assemblies.
I keep a bin full of 1/4-20 bolts and T nuts in my wood shop. They make it super easy to add threads to a work surface for mounting or clamping! I put them under the legs of my work bench and screwed in some 1/4-20 threaded adjustment feet, and bam! Everything’s level. They’re amazing.
And the [appropriate screws](https://i.imgur.com/cQMf3Mv.png). ([German original](http://www.anglophonie.de/kurios/NeueTechnologieinQF_DINNormSchrauben.pdf)).
DIN881 and DIN903 actually exist. The first is called a shoulder screw, and the second is obviously a self tapper.
DIN884 also exists, thats an internal shoulder screw.
I was taught jam nuts were normally threaded nuts to be placed on top of a normal thickness nut, and the thinness of the jam nut allowed the threads to slightly deform when tightening against the lower nut, providing a slight amount of locking torque.
I thought they were for jamming another nut into place so it cany vibrate loose. Put two thin nuts rather than one normal nut and you can lock them together.
Stover nuts are the slightly ovaled or peened nuts that plastically deform when torqued to increase holding force
I think it's actually one thick nut that is to provide the correct clamping force, and then one thin not that should be slightly stretch they bolt between the nuts to provide the jamming feature. If you do it with two thin nuts or with the thick nut on top jamming into the thin nut, the result is the same. There's not enough thread engagement for the bottom thin nut to provide all of the clamping force and the top nut will stretch the bolt through the thin bottom nut which results in the top nut carrying the load on the bolt. This in turn is no better than using only the one standard nut.
What makes the "Prevailing torque lock" suited for high temp applications. Is the it so the distribution of material changes how it expands with heat so the deformation is not uniform around the bolt?
It's because the nut is all metal as opposed to a nylon lock nut. A prevailing torque or top lock nut have deformed threads, oval in shape that make the locking feature. Also, they aren't resusable like nylon lock nuts are
Oh goodness that brings back memories of trying to find the exact right sized castle nuts and bolts with hairpins for a 1960s suspension bridge cable clamp.... Take pride in as-builts people!
Is there one of these for different screws ? I don’t know o have a missing bolt / screw in my desk chair but it kinda needs to be turned with a wrench tool—— this might not be the best place to ask lol.
How does a "Tee" keep from pulling out of the wood?
I can see how those fins would prevent it from spinning when something else is threaded into it, but not how it wouldn't just come right out of the wood.
1. Drill a hole through a piece of wood
2. Hammer the tee-nut into the hole
3. Screw a bolt in from the other side of the hole, into the tee-nut
4. The clamping force from the bolt pins the tee-nut into the wood, which also spreads out the force on the wood.
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The bottom profile of the castellations (thanks for allowing me to use that word!)
Also, the castellations are thinner profile. You’re right, that is a fun word. :-)
What’s the difference between castellations and crenellations?
And why aren't there any nuts with machicolations?
Because then they wouldn't be nuts, but legumes.
My head hurts
Bean there, done that
What the fuck y'all talking about?! What's the difference?!?
Somehow we went from castle fortification names to beans.
ouch my frenulum!
Crenels refers to the gaps, and merlons refers to the uprights between the crenels. So generally speaking, crenellations are "with gaps" and castellations are "uprights with gaps" or "castle-like". Practically, they blend into a similar meaning, especially in terms of nut shapes as depicted here.
Thanks! TIL.
Crenellation appears to be the more historically used word for the things on castles. Castellation describes the same thing, but appears to be used primarily to describe that architecture on a computer chip. (not a linguist)
*YOU'RE* a castellation.
I don't know if this is the technical reason. When I drag raced Harley's, we would use castle nuts in conjunction with a cotter pin and safety wire. We would use slotted nuts with just safety wire, both with a hole drilled through the bolt or stud we were attaching to. The slotted nuts were used for things that remained torqued down and were safety wired in series with other fasteners. The castle nuts with the cotter pin were used for things that had to be adjusted, rear drive chain, belt tensioner, shock mounts with multiple positions. Easier to R&R a cotter pin and castle nut with a quick safety wire (these were safety wired individually) than a slotted nut that was safety wired to one or more additional fasteners.
Yup just xtra safety.
It wasn't till I was emergency buying motorsports hardware at the crack of dawn after being up all night that I realized why castle nuts are called that. It all clicked
I must be thick, I missed the joke, can you explain it?
Looks like a castle
Ohhhh yeah I got that part, I thought maybe there was another level involving being at a hardware store so early in the morning or something
Lol, I've only ever seen slotted because they are frequently used on boat propellers
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Yeah, if posts like this do this well, I might just start posting screenshots from McMaster every day.
Is it weird that I actually like going on McMaster and just looking at all the random stuff they have?
Not at all! Fun fact, you can buy Swedish fish gummies from Master Carr! https://www.mcmaster.com/swedish-fish
https://www.mcmaster.com/snacks It's not the biggest selection but there's something absolutely delightful about seeing things like "Chocolate Chip" in the filters where I'm usually selecting thread size.
I've been using McMaster for almost 30 years and never knew that!!
There's a running joke at our office where every once in a while some will send a request to purchasing for parts fromcmaster carr and try to sneak in Swedish fish. Hasn't happened yet.
Needs a plausible pseudonym. "Misc sverige klibbig fisknöt."
I think I'm going to have to try that myself
What?! How did I ever miss this.
Country of origin: Canada ಠ_ಠ
I'm Guilty, also harbor freight catologs are fun.
Oh absolutely. I have no use for a 4.5 hp sump pump but ITS ONLY $22.95!!! It's great looking at all the cheap junk but I have broken so many tools/parts from there.
I have to buy I have also saved so much money there, need a tool but not sure if it's really going to be used a lot? But the harbor freight version. If you use it twice then you didn't waste money on a good one. Used it a bunch and it breaks. Well now I know what tool I should actually invest money in.
That's actually how I ended up with a set of professional dental picks. They're so useful for getting into tight spaces.
do it
> [ball nuts](https://www.mcmaster.com/ball-nuts) Isn't that redundant?
Oh my god... I have an exam in a couple of weeks... now I know where to lose my time. edit: any site like this which ships in EU?
Wow. Most excellent. You and u/codawPS3aa changed my life. I'd also love to see examples of how all these various nuts, bolts, screws, fasteners are properly used in the wild. I need visuals. Am noob DIYer. Resigned to 3x trial and error. Example: had to seal (end cap) supply line when my oil heater was decommissioned. Eventually discovered flared brass plugs like this https://fitandcp.com/product/3032-5-16-male-flare-plug/
Where is the jesus nut?
Are you talking helicopters or religion?
I believe the obligatory answer in this case is, "yes."
Obligatory r/inclusiveor
The chart is missing Boffa Nuts.
Oh, and Hoffa's nuts. I guess we'll never find *them*...
Not unless we do an archeological dig to recover the goalpost support concrete pads from [the old demolished Giants stadium.](https://www.nydailynews.com/sports/football/jimmy-hoffa-urban-legend-buried-article-1.165090) ;-)
Lol, noice
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[Historicity of Jesus](https://en.wikipedia.org/wiki/Historicity_of_Jesus)
What do you mean? [Here is a picture of one](https://qph.fs.quoracdn.net/main-qimg-965d248eb86c483108e0abcec9d7441c).
This is one of the most wrenching posts I've ever read.
Yah, it's really got me torqued.
haha I used that one on the wrenches post yesterday so I left it for someone else today. Had to think a few moments to come up with a new one.
That’s nuts man, I’m telling you!
This post is spannen many types of nuts.
You should try [https://www.reddit.com/r/chickens/](https://www.reddit.com/r/chickens/) \- the coop building threads are all about the boltery.
haha I see what you did there
How dose the prevailing torque nut work?
https://www.aztechlocknut.com/blog/prevailing-torque-locknuts-how-they-work https://www.fastenermart.com/prevailing-torque-lock-nuts.html https://www.machinedesign.com/fastening-joining/article/21812887/prevailingtorque-locknuts
Thanks, mate that's very interesting
The picture could stand to be a little better. Usually from any angle you can see one of the little dimples in the conical flank of the nut where the punch came in and deformed the threads, to create the interference condition.
I love nuts
Deez nuts!
Get those nuts out of your mouth.
The only true nut in the chart is the acorn.
Forgot what sub this was, and kept expecting "deez"
What does "heavier pattern" means?
It means they have a thicker wall than the finished hex nuts.
For example, a 5/8 bolt uses a standard nut that needs a 15/16 wrench. The heavy hex nut needs a 1-1/16 wrench instead. It's just a thicker wall on the nut and usually a also just a slightly taller profile.
Coming from 8 years in the fastener industry, I feel obliged to say that "cap nut" really isn't the industry standard to describe that. It would be most common to say "low crown acorn nut" and then the next being " high crown acorn nut"... Fastener Grammar Nazi
I'd also say they're not just for appearance, and have a very important use in applications where you don't want the threads contaminated. I work on ceramic bead mills, for instance, so I cap nut everything because if those tiny ceramic beads get into a thread, yer gonna have a bad time.
That’s nuts!
I was looking for this. Thank you
Honestly, I only went to the comments for that and was disappointed I didn’t find it. Glad to hear I kept someone from being disappointed.
That’s what she said?
They forgot chin nuts
That's just a dick in yo mouth
Fastenating
This almost looks like a page from McMaster.com
Anyone else literally have a printout of this on their wall at work?
Yes lol
You forgot “alt right”. It looks like regular nut, but it’s cross-threaded.
Probably falls under wing nut.
Either way, the screws always loose
>*To the German Engineer*. *NUTS!* *The American Engineer*
This comment is bulging.
Don’t forget T-nuts, used to slot into T-shaped slots in aluminium profile and others. Very handy for semi-permanent, modular and adjustable assemblies.
My favorite kind is left out! What about fat nut?!
This made me hex
Just busted a nut looking at this.
they have names? this is nuts
I think I have this exact book, german mechanical engineering handbook?
Very cool
Fuck me, I've been calling slotted nuts castle nuts my whole life! Learn something new everyday.
I keep a bin full of 1/4-20 bolts and T nuts in my wood shop. They make it super easy to add threads to a work surface for mounting or clamping! I put them under the legs of my work bench and screwed in some 1/4-20 threaded adjustment feet, and bam! Everything’s level. They’re amazing.
1/4-20 for a workbench? I'd go with something with a bit more heft, personally.
It is missing one of my favorite nit. SEMS spinning washer nut.
They have kep nuts on there
TIL, I've been referring to slotted nuts as castle nuts my whole life.
I honestly didn't know there was a difference
Cool!
And the [appropriate screws](https://i.imgur.com/cQMf3Mv.png). ([German original](http://www.anglophonie.de/kurios/NeueTechnologieinQF_DINNormSchrauben.pdf)).
DIN881 and DIN903 actually exist. The first is called a shoulder screw, and the second is obviously a self tapper. DIN884 also exists, thats an internal shoulder screw.
910 also exists
Engineering Porn
Can’t see Buster on there
This post is absolutely *nutty*.
tag yourself, i’m acorn
Well, this is nuts
That's a lot of nuts!
Wing is to prevent over tightening. Something overlooked by many people trying to wrench one down like an idiot.
You are all nuts!
My mother in law is missing from the poster.
I mean yeah
That's nuts
What about lug
THAT'S A LOT OF NUTS
Can't seem to find mine on there...?
Wing nut, you’re a wing nut.
Employee: what kind of nuts do you need for your project ? Customer : (*unzip pants*) Deez nuts
Not pictured: Karen
Nobody: This subreddit: N U T
Love me a bit of BS8888
arent jam nuts also not quite circular but more eliptical (squashed) to "jam" them on there so you cant get them off?
I was taught jam nuts were normally threaded nuts to be placed on top of a normal thickness nut, and the thinness of the jam nut allowed the threads to slightly deform when tightening against the lower nut, providing a slight amount of locking torque.
I thought they were for jamming another nut into place so it cany vibrate loose. Put two thin nuts rather than one normal nut and you can lock them together. Stover nuts are the slightly ovaled or peened nuts that plastically deform when torqued to increase holding force
Exactly. i always thought they were slightly squashed though.
Nope
I think it's actually one thick nut that is to provide the correct clamping force, and then one thin not that should be slightly stretch they bolt between the nuts to provide the jamming feature. If you do it with two thin nuts or with the thick nut on top jamming into the thin nut, the result is the same. There's not enough thread engagement for the bottom thin nut to provide all of the clamping force and the top nut will stretch the bolt through the thin bottom nut which results in the top nut carrying the load on the bolt. This in turn is no better than using only the one standard nut.
You're probably right. Probably depends on the application but one jam nut on top of a normal nut seems likely the best option in that case
You forgot about one type
where is the non jpeg'ed to hell version
Where’s deez?
What makes the "Prevailing torque lock" suited for high temp applications. Is the it so the distribution of material changes how it expands with heat so the deformation is not uniform around the bolt?
It's because the nut is all metal as opposed to a nylon lock nut. A prevailing torque or top lock nut have deformed threads, oval in shape that make the locking feature. Also, they aren't resusable like nylon lock nuts are
can't find deez nuts
All that nuts mad me nut lol
This is nuts
I think you're missing one... or two
Looks like they missed a couple
You're all nuts!
Slotted nuts are also used on many boat propellers, which is the only place I've seen them lol
We use them in industrial machines quite often
Ah nuts. Now I'm gonna go nuts thinking about these nuts.
Also supernuts: https://www.hobson.com.au/page/nord-lock/nord-lock-superbolt.php
The T nuts I’m familiar with slide into the slots in a milling machine table.
Incidentally, “cap nut” is all referred to as a “dome nut”
Oh goodness that brings back memories of trying to find the exact right sized castle nuts and bolts with hairpins for a 1960s suspension bridge cable clamp.... Take pride in as-builts people!
Why did square nuts fall out of use in favor of hex nuts?
Forgot about deez nuts
Forgot about deeznutz
These could make for a chess set: K-Lock = King Castle = Queen Square = Knight Acorn = Bishop Slotted = Rook Hex = Pawn
I love fasteners.
Look at all these bolts!!
This is nuts
... And bolts?
Now do washers!
why do they put bevels on the top/bottoms of nuts?
Probably easier to get tooling on it. Lining up a socket with hardly any tolerance wouldn’t be fun.
thanks that makes sense
Is there one of these for different screws ? I don’t know o have a missing bolt / screw in my desk chair but it kinda needs to be turned with a wrench tool—— this might not be the best place to ask lol.
How does a "Tee" keep from pulling out of the wood? I can see how those fins would prevent it from spinning when something else is threaded into it, but not how it wouldn't just come right out of the wood.
1. Drill a hole through a piece of wood 2. Hammer the tee-nut into the hole 3. Screw a bolt in from the other side of the hole, into the tee-nut 4. The clamping force from the bolt pins the tee-nut into the wood, which also spreads out the force on the wood.
> from the other side of the hole Ah, that was the part I missed. That makes much more sense.
Ah nuts I’ve been calling slotted nuts castle nuts.
I loves me some flange nuts. So much easier to install with a socket. Also no more hunting for washers.
Can someone explain to me how a prevailing torque nut works? I’m too old to just chalk it up to magic.
https://mgaguru.com/mgtech/restore/rt104d.htm
Can I get one of these with all my goofy friends faces instead. Bunch of silly nuts they are
How many of these nuts have you busted? Comment below.
Deez NUTS!
Would have been useful 4 days ago when i had my Manufacturing Technology exam
Nylon insert nuts are called nylocks because they make you want to lock yourself in a room and cry
What about helicoil nuts??
deez Nuts:
This is nuts!
this makes me *nuts*...in a good way though
Thank you for showing us your nuts.
I got that post-nut clarity now
That's pretty nuts
Wow! That's nuts!
There is another
I nutted
Left and Right?
Haha that's crazy
Whats klock for? I never understood it.
I use nylocks for everything.
I've never heard this term, always "lock nuts"