washered nut

[Dusty MI]

I have seen/had nuts with a washer as part of the nut, and cannot find them. Not a flare nut, I can find them.
Are they called something different?
I need two 3/4" ones.

Dusty

 

[FLOLDFORD]

We call them flange nuts at work. Most any fastener supply house should have them.

 

[TimV]

Flange nut is the usual term. If the flange rotates independently of the nut, (or, more accurately, the nut rotates independently of the flange) they're called a rotating flange nut.

 

[john in la]

A flange nut has a fixed flat area that looks like a washer built on the nut.

The nut with a free spinning washer are keps nuts but most people think of the nut with the free spinning star lock washer when you say keps.
For this reason I just call them nut with free spinning washer when trying to find them.

The problem will be finding 3/4 thread in small quantities.
That is a large nut.

 

[ss55]

Try Fastenal or McMaster-Carr

 

[rustred]

a bolt and nut store would have them or get them. i have those on my trailer wheels.

 

[DoubleO7]

Hope you don't need a lot.
https://www.mcmaster.com/nuts/flange-nuts/rotating-flange-nuts/

3/4"
$$8.50
EACH

 

[Steve@Advance]

Tyy "spinning captive washer nuts".
spinning captive washer nuts

 

[Bob Bancroft]

CaseIH uses them all over their combine, or at least used to. That's where I get them.

 

[WNYBill]

Flange nut....AMAZON

 

[MarkB_MI]

Captive washer nut. Used by OEMs to
simplify assembly. Functionally, a
separate washer and nut will work.

 

[Dusty MI]

Thanks guys, one's that large didn't seam readily available and I only needed two, and I had the nuts and washers, so I made them.

Dusty

 

[SVcummins]

Do not support amazon

 

[MarkB_MI]

A few years ago I worked with the fastening engineering department of a major automotive OEM to organize their fastener catalog in our product data management system. This catalog had about ten thousand fasteners, but only a few hundred of those were considered "standard" fasteners that were approved for use on new designs. The engineers told me that there were NO washers currently approved for use! If an application required a washer, they had to use a bolt, screw or nut with a captive washer. Sure eliminates a lot of aggravation in the plant.

 

[mark1955]

what has amazon, done .

 

[JMOR]

(quoted from post at 08:09:02 09/21/20) A few years ago I worked with the fastening engineering department of a major automotive OEM to organize their fastener catalog in our product data management system. This catalog had about ten thousand fasteners, but only a few hundred of those were considered "standard" fasteners that were approved for use on new designs. The engineers told me that there were NO washers currently approved for use! If an application required a washer, they had to use a bolt, screw or nut with a captive washer. Sure eliminates a lot of aggravation in the plant.

..and such would have prevented careless re-assembly without washer that resulted in more than one Boeing 737 crash.

 

[DoubleO7]

How many times have you seen a bolted connection with a flat washer then a lock washer then the nut???

Makes no sense to me, to put use a flat washer with a lock washer on it too.

 

[JMOR]

(quoted from post at 10:49:30 09/22/20) How many times have you seen a bolted connection with a flat washer then a lock washer then the nut???

Makes no sense to me, to put use a flat washer with a lock washer on it too.

ctually that is somewhat like the Boeing 737 incidents, in that without the flat washer, the nut would fit right thru the part that was behind it, thus detach. Why hole so large you ask? Because the "bolt" was acting as a shaft and needed to rotate in the mechanism, so it was greater in diameter than the turned down and threaded portion for the nut.

 

[MarkB_MI]

> How many times have you seen a bolted connection with a flat washer then a lock washer then the nut???
> Makes no sense to me, to put use a flat washer with a lock washer on it too.

Well, they serve different purposes. Of course, self-locking nuts and thread-locking sealants have largely made lock washers obsolete.

 

[timcasbolt]

(quoted from post at 10:49:30 09/22/20) How many times have you seen a bolted connection with a flat washer then a lock washer then the nut???

Makes no sense to me, to put use a flat washer with a lock washer on it too.

he flat washer spreads out the load, the lock washer keeps tension on the nut. Two parts for two purposes.

 

[JMOR]

(quoted from post at 07:22:26 09/23/20)

(quoted from post at 10:49:30 09/22/20) How many times have you seen a bolted connection with a flat washer then a lock washer then the nut???

Makes no sense to me, to put use a flat washer with a lock washer on it too.

he flat washer spreads out the load, the lock washer keeps tension on the nut. Two parts for two purposes.

Washed would have kept bolt from punching hole in fuel tank. https://web.archive.org/web/2017092...lines120/ChinaAirlines120_Downstop_pop_up.htm

 

[DoubleO7]

(quoted from post at 08:22:26 09/23/20)

(quoted from post at 10:49:30 09/22/20) How many times have you seen a bolted connection with a flat washer then a lock washer then the nut???

Makes no sense to me, to put use a flat washer with a lock washer on it too.

he flat washer spreads out the load, the lock washer keeps tension on the nut. Two parts for two purposes.

What happens when the flat washer becomes a bearing?

There is another reason a split washer is upset one way vs the other way. That is the offset will bite into bothe the nut and the material surface which will resist the nut from backing off also.
Placing a load distributing flat washer would creat a sliding surface/bearing of sorts defeating the anti rotation ability of the split lock washer.

That is my thought anyway.

 

[DoubleO7]

"JMOR"
Yes, there are assemblies that require a flat washer, and of a certain size as well to prevent pull thru, etc.

In aircraft, I suspect the nut to be safety wired.