whats this thingy called?

[mickthetree]

I need to replace one of the thingys in my bandsaw that holds the cool blocks in place.

Its a short threaded rod about 5mm across with a hole in the end for an alan key to go in and turn to tighten.

I see them on lots of things around the house too but I havent got a clue what they are called to find a replacement.

Any one know what I'm waffling on about?

 

[Boatfixer]

From your description is it a grub screw?

Graham

 

[mickthetree]

Yessssssssssssssssssss!!!!

First prize that man!!

result.

Now I've just got to find one that has a matching thread :?

 

[CHJ]

Try Grub Screw or if your posh Set Screw.

 

[mickthetree]

excellent, cheers CHJ

 

[head clansman]

hi

is there a euro fastener near you anywhere , should have them .hc

 

[9fingers]

Try Grub Screw or if your posh Set Screw.

If you are an engineer then it is a "socket set screw"

and whilst i'm in pedant mode it is "Allen key" with a capital letter cos it is a persons name.

:lol:



Bob

 

[mickthetree]

Cheers for the clarification. Now Iknow what I'm taking about!!

 

[9fingers]

Mick,

If you are having difficulty finding a supplier, let me know and maybe I can help.

Bob

 

[mickthetree]

Hi Bob

That would be helpful as I'm not sure whats what!

Just had the calipers out. Its 6mm wide and 8mm long. An 3mm "Allen" key fits it (or did before someone nackered it)

Is there a way to work out what screw thread this would be? As I dont have any gauges to measure this.

Or is it worth taking a punt on it being something standard?

 

[9fingers]

assuming your 6mm is accurate and there is no possibility it is 6.3mm or a bit more, then it is a metric thread M6. this is corroborated by the 3mm Allen key socket.

The thread pitch should be 1mm. Measure this over a number of thread crests and take an average.

it that checks out then it is a standard ISO metric coarse thread M6 x1 and 8mm long.

I don't have any 8mm in stock. Sadly they come in boxes of 100 from my supplier and will be about £6/100. I can get them no problem but I doubt that it is a viable solution for you.
If you are stuck I could go halves on a box with you and fill up my stock?

Let me know what you want to do

Bob

 

[mickthetree]

Hi Bob

Thanks for explaining that.

I've checked the threads as best I can and I'm sure you are correct.

I'm poppingup to leeds to see my sister this wknd. Her mate has a box of "bits and bobs" I can have a look through.

Just had a look on the bay. £6 for 100 you say?? well bag them up into 20s and stick them on there. Profit ahoy!

 

[Digit]

About 10P from a supplier. If you get stuck PM me I'll send you one.

Roy.

 

[OldWood]

Surely if we go into pedant mode, a grub screw is one without a head and a set screw has head, albeit maybe a small one.

At that point I will go into nostalgia mode of student days holiday working in a plant that made plastic sheeting. The machine maintenance man was short sighted and was known to put oil into the Allen cap screwheads. Now don't all rush and say you've done the same !!

OW

 

[Digit]

A grub screw is headless regardless of driver method.
A Bolt is designed to be used with a nut and is threaded right up to the underside of the head.
A Set Screw has a length of plain shank between the thread and the head and is designed to fasten two plates etc together via a female thread in one plate, not a nut.

Roy.

 

[OldWood]

Hurray - there's someone more accurately pedantic than me !! Thanks Digit.

OW

 

[CHJ]

Without getting even more pedantic about the subject and having to quote chapter and verse from several specifications ( which i can't at the moment as my references are in the UK and I'm not) have a look at Wiki. this basic description is about as universal as I've encountered in some 40 years of aircraft and related engineering.

Wiki

You need to be very careful on what name you apply to any given bolt/screw form on a forum with a multi national membership, just because a UK firm uses a specific name in it's catalogue does not mean that it is universally correct.

The original poster did not know the term for a headless screw fitting and was given a couple of common names by different people that would help a 'Google' search.

Bantering on about specific 'correct' names means nothing unless the specification or international standard is quoted in relation to the item.

 

[Digit]

But Mick comes from Tring, middle England, and I used the definitions as taught me and in my reference books and as offered by my local, Welsh, supplier. But I don't doubt that even the word 'screw' will ultimately be changed for some PC reason, if it hasn't happened already of course.

Roy.

 

[johnjin]

Sorry to disagree Roy
But I think the Set Screw has the thread to the top and the Bolt is only part threaded. As far as the headless screw goes it is a Grub Screw and in this case it is a Socket Grub Screw.

John

 

[Digit]

John, I give in! I did some checking on the Net and in some cases the grub screw is called a 'set screw!'
I can understand the reasoning in that it 'sets' the item in place, but why the changes in definition I just do not know.
Bit like some of the fatuous job titles, it's got to sound complicated or it's not worth bothering.
When I was a student it was 'Inflammable' and 'Imflamable' and 'Stress' resulted in 'Strain'.
Now it's all changed, I'm old!

Roy.

Out of curiosity I ran that through a spell checker, it passed on Imflammable.