Non-metric bolts needed, please!

[oetzi]

My mother recently got something she wanted to have for a very long time, but could never afford, a (second hand) wooden couch for her garden

After more than ten years of being heavily neglected, it was black from dirt, with parts missing, bolts bent or lost and wobbly everywhere.
I had to clean it with a steam blaster. Oiling it will be easy, too. I will use the same mixture as on my knive handles and the wood will turn out beautifully.
But the lost and bent bolts will be a problem.
They are part of a U-shaped wooden structure which forms a prop to raise the rear part of the couch.
It being of british origin has, of course, bolts with non-metric threads.
I think, you call them "shoulder-screws"?

Thats what I measured:
The thread-gauge (Whitworth 550 on the handle of the set) which will fit reads 26G.
Diameter of the non-threaded part is 6.1mm, total lenght of the shaft is 42, of which 16mm is not threaded.
Basically, what I need are any two bolts with this thread.
At least as long as the original, I can cut it down myself, but would need a nut to realign the thread after cutting..
Whether the shaft has any non-threaded part is not that important, I could wrap it up with tin where the wood rotates around the originally non-threaded part.
SS or brass preferred but I take anything.
So maybe any of you has some bolts which I can use?
I will gladly pay what is necessary to be able to restore this couch.
Thank you.

 

[jimford]

Appears to be 1/4" BSF (British Standard Fine - a Whitworth form thread).

Are you not in the U.K.?

I _may_ have a die somewhere I can let you have, so you can make your own - would that be any good?

Jim

 

[Tadpole]

My mother recently got something she wanted to have for a very long time, but could never afford, a (second hand) wooden couch for her garden

After more than ten years of being heavily neglected, it was black from dirt, with parts missing, bolts bent or lost and wobbly everywhere.
I had to clean it with a steam blaster. Oiling it will be easy, too. I will use the same mixture as on my knive handles and the wood will turn out beautifully.
But the lost and bent bolts will be a problem.
They are part of a U-shaped wooden structure which forms a prop to raise the rear part of the couch.
It being of british origin has, of course, bolts with non-metric threads.
I think, you call them "shoulder-screws"?
Thats what I measured:
The thread-gauge (Whitworth 550 on the handle of the set) which will fit reads 26G.
Diameter of the non-threaded part is 6.1mm, total lenght of the shaft is 42, of which 16mm is not threaded.
Basically, what I need are any two bolts with this thread.
At least as long as the original, I can cut it down myself, but would need a nut to realign the thread after cutting..
Whether the shaft has any non-threaded part is not that important, I could wrap it up with tin where the wood rotates around the originally non-threaded part.
SS or brass preferred but I take anything.
So maybe any of you has some bolts which I can use?
I will gladly pay what is necessary to be able to restore this couch.
Thank you.

that's 9/32 BSF or 7.14mm (drill size 5.8mm) 26 teeth per inch Not easy to find, as they are 55° angle pitch on the thread

 

[jimford]

that's 9/32 BSF or 7.14mm (drill size 5.8mm) 26 teeth per inch Not easy to find, as they are 55° angle pitch on the thread

Errm, I make 6.1mm O.D. near enough to 1/4", making it 1/4" BSF!

Jim

 

[Black Sheep]

Jim,

I'll have a did around I'm bound to have some, Pm me your address and I'll post you them (dependent where you are)?

Regards

Richard

 

[jimford]

Jim,
I'll have a did around I'm bound to have some, Pm me your address and I'll post you them.

Errm, they're for 'oetzi' - but thanks anyway!

Jim

 

[FGYT]

are you sure they ar not 6mm metric
I would doubt they are a whit form on anything less than 40yrs old

1/4"BSF is a 6.35mm so the shoulder of 6.1 is a bit small and what you would expect for 6mm
26TPI is 0.977mm pitch close enough to the 6mms 1mm pitch




ATB

Duncan

 

[jimford]

are you sure they ar not 6mm metric
I would doubt they are a whit form on anything less than 40yrs old

Nothing wrong with Whitworth threads - we held together an empire with them!
;^)

Jim

 

[EdS]

why not just drill out and use metric bolts

 

[FGYT]

Nothing wrong with Whitworth threads - we held together an empire with them!
;^)

Jim

never said there was got a couple of Nortons a BSA M20 and a Franny B in the garage covered in em

Just thought it was unlikely this is actually one

ATB

Duncan

 

[Black Sheep]

Errm, they're for 'oetzi' - but thanks anyway!

Jim

Sorry Jim rushing to post before I left work.


oetzi - are you sure their not metric !/4" x 26tpi BSF as M6 x 1 is 25 tpi?

Regards Richard

 

[jimford]

never said there was got a couple of Nortons a BSA M20 and a Franny B in the garage covered in em

I don't think they would have been BSF or BSW originally. Motor cycles were always BSCy (British Standard Cycle), which was also a Whitworth form but 26 tpi whatever the diameter. In the case of 1/4 BSF it is the same as 1/4 BSCy. Mind you, I'm drawing on knowledge acquired during my apprenticeship <mumble><mumble> years ago!

Jim

 

[Goatboy]

Hi Oetzi,
You could try here,
http://www.billstoolstore.co.uk/
They've never let me down in all the years I've been after stuff and they're mucho cheapo. If you can't find them online I'd recomend giving them a call and they should post out, failing that I can get a mate of mine to pick you some out and I'll post them to you. They're also pretty good for EX military tools and boxes.
Hope you find 'em soon,
Goatboy.

 

[EdS]

just for fun:

http://www.boltscience.com/pages/screw1.htm

 

[Chinkapin]

I have a 1976 Triumph Bonneville 750cc. All the nuts and bolts on it are SAE. (SAE stands for Society of Automotive Engineers, and they were the ones that standardized the threads used in the auto industry many years ago, here in the U.S.) I have often wondered if this was on export to U.S. bikes only or were theses also sold in the U.K. as well. All the earlier Brit bikes were Whitworth - - and cussed unmercifully because of it.

 

[FGYT]

dunno sounds like one of them New fangled bikes Probably a Unit machine to :tongue-ti
Lots of stuff had to be changed when it was sold to the US market completely ruined the MG with Big rubber bumpers etc

mind you you still send people into space in ft n Inches


ATB

Duncan

 

[Bravo4]

mind you you still send people into space in ft n Inches

I thought we were supposed to go metric back in 1975, I guess we did not want to leave Liberia and Burma out in the cold. You would think the loss of a $327,600,000.00 spacecraft/mission would be motivation enough. NASA is finally promising to go metric, but only on the Moon Lunar Bushcraft Baby!
http://science.nasa.gov/headlines/y2007/08jan_metricmoon.htm

 

[oetzi]

Thank you for the input!
The couch is about 12 years old, so maybe its all metric.
The previous owner told me that she had tried to replace the bolts, but couldnt find any because of the non metric thread.I will check on this first and then maybe try to order in the UK.

 

[jimford]

All the earlier Brit bikes were Whitworth - - and cussed unmercifully because of it.

As I've mentioned earlier, I suspect that they were BSC - British Standard Cycle. (In my earlier posting I mistakenly referred to BSCy and stated it was Whitworth form.)

http://homepages.tesco.net/~A10bsa/bscbot.htm

Jim

 

[oetzi]

A bog standard 6mm metric will fit!
So I only have to go to the next hardware store!
Thank you all for the kind help!!!!!