So What’s the Difference Between Slotted and Castle?

[brockrwood]

 

[dhbarr]

The slotted extends to the corners of the hex, while the castle does not?

 

[brockrwood]

The slotted extends to the corners of the hex, while the castle does not?

Agreed. But why does it matter? It looks like the same application for both nuts.

 

[brockrwood]

Also, why aren’t all nuts square nuts? You can really get some leverage on those and screw ‘em down tight.

 

[manixFan]

Knuckleheads not knowing nuts never know negatives negating numerous nuts.


Tony

 

[heada]

Castle is designed to have a wire wrapped around. Slotted has room for a cotter pin.

Different securing process.

edit: both support cotter pins. Castle is cotter pin plus wire wrap. Slotted is just cotter pin. Slotted would be the hub on an axle. Castle would be what holds the rotors on to a helicopter (examples may not be true to life, but you get the idea)

 

[goose_in_co]

Your diagram is missing the knurled nut.

it is used for finger tightening with a limited torque.
Typically found on model train transformers.

 

[goose_in_co]

Next someone will start talking about pecans, and walnuts.

 

[lr64]

A castle nut with cotter pin might take up a little less space and weigh just a little bit less.

 

[Alan15578]

View attachment 675811

Next someone will start talking about pecans, and walnuts.

This could go on for a long time, but best not leave out the exploding nut in this forum.

 

[prfesser]

Your diagram is missing the knurled nut.

it is used for finger tightening with a limited torque.
Typically found on model train transformers.

Some knurled nuts have straight knurls--sometimes called 'coining'--see the edge of a dime/quarter. Others have diamond-knurling. Both pretty much have the same purpose, advantages, limitations.

 

[OzHybrid]

In the US a cotter pin is the generic name for a split pin. In the UK a cotter pin is a tapered wedge pin. Commonly used on older bicycles to hold the pedal cranks in place.
https://en.wikipedia.org/wiki/Cotter_(pin)
Tha man who is credited with inventing the split pin, Herbert Spencer, had an "angry suit" that he wore when he was upset.....
https://interestingliterature.com/2016/03/five-fascinating-facts-about-herbert-spencer/
The wormholes of the internet.......

 

[lr64]

In the US a cotter pin is the generic name for a split pin. In the UK a cotter pin is a tapered wedge pin. Commonly used on older bicycles to hold the pedal cranks in place.
https://en.wikipedia.org/wiki/Cotter_(pin)
snip

The UK version, at least as implemented on English bikes, designed to cause great frustration and Brinnelling of bearings caused by enraged enthusiasm with a hammer. Truly modern civilization didn't start until cotterless cranks.

 

[SolarYellow]

Tapered wedge pins hold the front sight base on the barrel of an M16.

 

[Rocket-Fan]

Also, why aren’t all nuts square nuts? You can really get some leverage on those and screw ‘em down tight.

Access. 6pt and 12pt fasteners have more corners for easier engagement.

 

[Handeman]

Also, why aren’t all nuts square nuts? You can really get some leverage on those and screw ‘em down tight.

Because you can't use 6pt. or 12pt. sockets or box end wrenches on them.

 

[lr64]

Also, why aren’t all nuts square nuts? You can really get some leverage on those and screw ‘em down tight.

A square nut takes up more space, skins more knuckles, and is heavier.

 

[lakeroadster]

The Internet... ain't it wonderful...​

What is the Difference Between a Castle Nut and a Slotted Nut?​

Often called axle nuts as this is where they are most commonly found, castle and slotted nuts are hexagon nuts with turrets and slots on the top which resemble a castle wall. These types of nuts are used in conjunction with bolts that have holes in the end through which a locking pin can pass to lock the nut into position and prevent any further rotation. The locking pin is usually a split cotter pin, an R clip, a spring pin or a safety wire.

The main difference between castle and slotted nuts is found on the turret end section where the split pin is found. On the castle nut the end section is turned down slightly, enabling the split pin to be wound round and pinned against the turret so that the pin does not protrude. On a slotted nut this is not possible. Other than that they both have the same functionality.

On a slotted nut the diameter of the castellated section is the same as the main wrenching section of the nut (unlike a castle nut where the diameter of the castellated section is slightly smaller than the main wrenching part).

 

[manixFan]

And then of course there are the huge variety of product specific nuts, like those from 8020 for our favorite launch rails:



Tony

 

[Tookanforever]

Castle is designed to have a wire wrapped around. Slotted has room for a cotter pin.

Different securing process.

edit: both support cotter pins. Castle is cotter pin plus wire wrap. Slotted is just cotter pin. Slotted would be the hub on an axle. Castle would be what holds the rotors on to a helicopter (examples may not be true to life, but you get the idea)

We also use very big Castle nuts on Turbine cases, both steam and gas.. although they're 4 1/2 inches or better..

 

[Tookanforever]

We also use very big Castle nuts on Turbine cases, both steam and gas.. although they're 4 1/2 inches or better..

 

[manixFan]

Those witness marks are going to cause me several sleepless nights!


Tony

 

[Tookanforever]

That's from bolt stretching.. we use induction heat to stretch the bolt and have the proper force applied..