Welcome back to Albany County Fasteners - Fasteners 101
I'm Bob and today we're going to be talking about nuts and lock nuts. So let's get started.
I have a whole bunch of nuts on my table. I have, we're going to start basically with finish nuts.
Next into lock nuts and then into specialty nuts.
Which will follow right after and then we're gonna do a couple of demonstrations.
So the nut first I have up are two machine nuts. Okay? and these machine nuts
to the left, I have a standard machine nut. To the right, I have a small pattern machine nut.
Now those two machine nuts, they will take the same screw but
the only difference is the outside circumference. Obviously small patterns are made for
very tight areas for using those screws or the nuts on very small locations that are tight.
So that's machine screw nuts. Now I have finish nuts and jam (nuts).
So to the left, I have a finish nut which is a standard finish nut.
It's the most typical widely used nut on the market. 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 use the same. You use the same wrench
to apply the nut and to remove the nut.
Next one I have is again, a finish nut but this finish nut and jam nut;
To the left I have a finish nut and to the right I have a jam nut.
And jam nuts, just to give you 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, tighten them up.
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 we can't have a full size nut.
So what you have here with this Jam nut and this finish nut is this is what we call a heavy
finish nut and a heavy Jam nut. And how you tell the difference here's the standard finish nut
Okay, to the left is the standard and this is a heavy finish nut
so you can see the difference in the outside diameter, the thickness of the nut.
So this heavy nut is going to take a larger wrench even though it's the same size
bolt that would go through it.
This is a heavy jam nut. So this is a standard to the left
and to the right is the heavy Jam nut. You can see the substantial difference in that
and there's projects that require that type of nut, as specified.
Those two as I said are both Finish and jam nuts; heavy.
Next I have square nuts. So you'll see this square not two left,
they're both basically square nuts. The one on the left has bevels on the ends.
On one side only. On the opposite side, it doesn't have any bevels.
You can see that over here. You see it's flat and then over here you can see the bevels
and on this smaller square nut there's no bevels at all.
It's just a sliced nut and that's it. The bevels start at 1/4"-20.
So anywhere from, I believe, the square nut starts at #6-32 up to #10-32;
those will have no bevels on them. However once you get above that you will see these bevels on the top edge.
The next set of nuts I have are the locking nuts. So we're moving from finish nuts to locking nuts.
These are nylon insert lock nuts you can see in here they have a nylon insert
that's what they call a nylon insert and what happens is when you put the nut
through, I'm sorry, the bolt through it's starts to thread the nylon and that puts
pressure on the the screw and prevents it from vibrating loose.
This is a nylon Jam nut so this is the same nut, nylon locking, but in a jam nut so it's low profile
and you can see the difference between them.
So this would be a standard (Nylon Insert Lock Nut) this would be a jam (Nylon Insert Lock Nut).
I'm gonna keep these out. Now I have, same thing nylon Jam nuts, OK?
However, these are what they call heavy nylon Jam nuts okay.
You can see here the difference in the standards and here you can see the difference in
the jams. If I can get a stay... yep perfect. So you can see here the difference and you
can tell by the back side mainly. So when you want to look at and this thing which
what's different you can see the meat that's on a heavy nylon lock nut versus a
standard to see the wall is much thinner on a standard nut.
Obviously you have to have the room to put this on and that also stands for the jam nut; nylon locking jam nut.
It's the same thing. So that right there as you can see is the
difference between them this is the jam nut, heavy and this is the standard.
Now I'm going to move on what they call a Stover. This also is called a prevailing torque locking nut.
So it has a locking mechanism that's built into this cone
and as you put it on it starts to act like a locking nut.
I'm going to demonstrate that one also for you. This nut, this is a two-way nut.
So how do you tell it's a two way nut? A two way nut has this little marking in the center.
There;s a little marking in the center. See it there? It's almost like a punch right in the center
and that shows that that's a 2-way so it's locking, two way, no matter if you put it on or off.
Once you start to screw up that size it will start to lock.
I just reached it now. I'm not going to continue but either way I put this on
it's going to start locking. They call it a 2-way locking nut.
The next one I have is a serrated flange nut. This is a nut.
It has an integral flange built into it and on the back side you can see that it's serrated.
That's usually used in applications where you have some type of metal
sheeting or something that has metal and you tighten it down and those
serrations prevent it from backing off. So that's a serrated lock nut.
Then we have, as another lock nut, this is called a K lock nut or Keps lock nut.
These have these little wings that are here and this is a free rolling, free
rolling washer lock nut. So those little
wings get tightened and the key to this is not to over tighten it. Once you over
tighten this it's no longer a lock nut and that free rolling washer
gets crushed and it just doesn't work for you anymore
so the key to this is not to torque it down too tight.
Very common, this is a very common lock nut.
Then we have, this is a left hand (nut). I'm getting into the specialty items now so
I'm gonna start showing you some special nuts.
This is what they call left hand jam nut.
You see it's a low profile (nut), okay? The only way you can tell left hand is
it has an arrow that is right there and that arrow shows it's turning to the
left that's the only way you're going to know when you have a left hand nut you
got to look for that arrow. If that arrow exists, that's a left hand nut.
There's a wing nut. Obviously, very commonly used: wing nuts.
For many different types of applications. This nut, we'll show you this one first.
This is a reducer (nut). So you can see on one side it has 3/8"-16 and this side has
1/2"-13. So you can literally go if you had some threaded rod and you want
to reduce it down to a smaller size or, the opposite, where you wanted to go
from 1/2"-13 to 3/8"-16 you use this reduce coupling nut they call it and
that's the way that that would work there. This is a standard coupling
nut they come in various sizes and lengths different thread pitches: fine,
coarse thread. All these items I'm showing you do come in coarse and fine
thread. This is a knurled nut. They're commonly used in chandeliers, tattoo
machines, many many different types of finished applications.
These are the types of things you put on with your thumbs, don't usually use a
wrench on this type of a nut. That's the same thing with a wing nut. Wing nuts,
always use your thumb no wrenches involved in these nuts.
Next I have our cap nuts. So there's two different types of cap nuts. You have
low profile, high crown and then you have what they call an acorn nut and that's a
little more substantial in height. Those are the cap nuts. I have here what
they call a t-nut. T nuts are used mostly in wood, most commonly. They do use
it in plastics also. A Tee nut is made to go in the holes drilled into wood or into a
plastic product and then these prongs that you see here, they come in three
prong or four prong, this particular one has four prongs. 1-2-3-4. Four prongs.
And then it has this barrel. They call this a barrel and you push it in to
the hole that you drilled and then you suck the screw in and this flattens
right out with the wood, typically. Very commonly used nut.
Next one I have, this is called a tri groove nut. It has three grooves. There's one-two-three.
There's three grooves in here. This is a security nut. This is to prevent anybody from
trying to put a wrench on (it). It's very hard for the wrench that might pick it up but
it's hard to put a wrench on this nut. You could probably put a vise grip on it and
it'll hold it and you'll get it off but it's really a deterrent for anybody
walking by wants to try and take something. That's what it's mainly
used for and it takes a special socket that clips that goes over this nut and
locks into those three grooves to be able to tighten it on. Then we have
a castle nut. These are typically used in cars, you'll find them on axles when they
hold on wheels and bearings, rotors. We're going to demonstrate this one also for
you, whereas, we're going to drill out a bolt, slide the cotter pin in to show you
how this is locked in place. Then the final nylon lock nut I have, which this
one is very interesting, this is a standard nylon lock nut with the nylon
insert and this nut is what they call pre-waxed. It's waxed to prevent any
galling. So galling gets into where you're nut seizes on to the bolt and you can't
go any further and the only thing that starts to happen is either you snap the
bolt or snap the nut. We're going to demonstrate that we'll have no galling
with this particular waxed (nylon) insert lock nut. This is a great product for
manufacturing production you don't have to put any anti-seize on to the nuts or
screws. So this will save yourself a lot of time.
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