GStwin.com GS500 Message Forum

OK I guess I am up to my elbows in it ... What is machine thread...
Yea I use it, stainless button head bolts are available in it ... with allen heads no less so I love it ... but what exactly is it.
BTW 10-32 1/2 inch long ones ... yea will fit the float bowl screws... which is what those that send me carbs get back after a rejet ...
Cool.
Srinath.

IMHO no such thing.  Never heard of it.  A bolt is a bolt is a bolt.

Probably just somebody's way of referring to the unified national thread.  (the standard 60-degree form).

At first I thought you were referring to some kind of Brit. word for  "All Thread" until I saw 10-32x1/2".  :lol:

I interpret "machine threads" to be a generic term for the tighter, finer threading used on machine screws (http://www.boltdepot.com/machine-screws.aspx) (as opposed to wood screws (http://www.boltdepot.com/wood-screws.aspx), sheet metal screws (http://www.boltdepot.com/sheet-metal-screws.aspx), etc.)

Ditto on Kerry's comment, but it also might be the title of an older Bush song, or a band name.  Wait, that was Machine Head...whoops...

yeah, i belive they are refering to 'Fine' threads verses 'Coarse' threads.

A 10-32 x 1/2" is always 10-32 x 1/2".  You can specify the head type or the metal, even the grade of metal, but saying 10-32 x 1/2" machine thread is IMO redundant.

The "coarse" vs. "fine" is determined by the second number after the screw size; 10 = #10 screw, 32 = 32 threads per inch.  

"Coarse" and "Fine" are just more redundancies.

Quote from: Mk1inCaliDitto on Kerry's comment, but it also might be the title of an older Bush song, or a band name.  Wait, that was Machine Head...whoops...

Deep purple - and machine head... yea ...
Cool.
Srinath.

the fine size in #10 would be 10-32
the coarse size would be 10-24

1/4-28 would be fine
1/4-20 coarse

and so on and so forth

Think of a machine screw as one that will accept a nut, as opposed to a wood screw, sheet metal screw, lag bolt, etc. (as Kerry has pointed out above) They come in various sizes and head configs.

And then there's pipe thread!!! :lol:

Quote from: seshadri_srinath
BTW 10-32 1/2 inch long ones ... yea will fit the float bowl screws... which is what those that send me carbs get back after a rejet ...
Cool.
Srinath.

Maybe I could be wrong but for some strange reason I feel that a motorcycle made in Japan and carbs that are also made in Japan us metric size nuts and bolts and you are using 10-32 1/2 inch in place of a metric or correct size item??????????? :o

Again I could be wrong but ever nut and bolt that I have run across on a Suzuki, Yamaha, Honda and every other "made in Japan" motorcycle or bike has been metric.

Good point!

From the What does one need to Rejet a 2001+ GS500. (http://www.gstwins.com/forum/viewtopic.php?t=12928) thread in the FAQ forum:

Quote from: The_good_guyIt is highly suggested that you also replace the 4 mounting bolts of each float bolt with allen screws rather than the philips heads that are on there. To take the philips heads off you will need an Impact Wrench (best to keep carb on a hard stable surface when doing this).

The size for the Allen Bolts are: M4x10 by 1/2" long METRIC

This will allow faster changing of jets on the bike.

Manjul and I found those bolts/screws at some home improvement place called ... Orchard Supply? ... in the Reseda / Van Nuys area of LA.  They had a GREAT selection of metric stuff.

Quote from: KerryGood point!

From the What does one need to Rejet a 2001+ GS500. thread in the FAQ forum:

Quote from: The_good_guyIt is highly suggested that you also replace the 4 mounting bolts of each float bolt with allen screws rather than the philips heads that are on there. To take the philips heads off you will need an Impact Wrench (best to keep carb on a hard stable surface when doing this).

The size for the Allen Bolts are: M4x10 by 1/2" long METRIC

This will allow faster changing of jets on the bike.

Manjul and I found those bolts/screws at some home improvement place called ... Orchard Supply? ... in the Reseda / Van Nuys area of LA.  They had a GREAT selection of metric stuff.

I got mine at ace hardware

any black bolt i've ever seen has been metric.. these were metric.. and black..

You can get black bolts in SAE too.  Just because a bolt is black doesn't mean it's metric.  Usually when I buy pan head and button head allen screws they only come in black, SAE and metric.  But most black bolts will rust like crazy, so it's always a good idea when buying bolts for your gs to buy them in stainless, every bolt except the header bolts; usually they are made of an alloy that is designed to withstand heat extremes...

Quote from: tkm433

Quote from: seshadri_srinath
BTW 10-32 1/2 inch long ones ... yea will fit the float bowl screws... which is what those that send me carbs get back after a rejet ...
Cool.
Srinath.

Maybe I could be wrong but for some strange reason I feel that a motorcycle made in Japan and carbs that are also made in Japan us metric size nuts and bolts and you are using 10-32 1/2 inch in place of a metric or correct size item??????????? :o

Again I could be wrong but ever nut and bolt that I have run across on a Suzuki, Yamaha, Honda and every other "made in Japan" motorcycle or bike has been metric.

5 mm dia .8mm pitch is the correct bolt for the 89-00 floats ... the 01+ floats are 4 bolt ... so dont get confused. Now 32 threads per inch = .7934375 mm ... I'd say there is atleast that much play ... and a 10 screw is 5mm dia ... The 10-32 is exactly the same as 5mm .80 pitch, they even fit the test threaded part, they fit each other ... the thread to thread match up and look for light ... perfect fit, and guess what, never had any issues in any carb. BTW honda carbs use 4mm and I believe I fit 8-32's in it ... have to check... Button head stainless bolts aren't available in metric ... Heck stainless allen head even cylindrical isn't available at Home depot ... I know I can buy custom bolts from a bolt speciality shop, but I dont anticipate needing 250 bolts - their minimum order for small sizes, in the near future... BTW you should try it and see how it fits... and post back here.
Cool.
Srinath.

Quote from: seshadri_srinath
5 mm dia .8mm pitch is the correct bolt for the 89-00 floats ... the 01+ floats are 4 bolt ... so dont get confused. Now 32 threads per inch = .7934375 mm ... I'd say there is atleast that much play ... and a 10 screw is 5mm dia ... The 10-32 is exactly the same as 5mm .80 pitch, they even fit the test threaded part, they fit each other ... the thread to thread match up and look for light ... perfect fit, and guess what, never had any issues in any carb. BTW honda carbs use 4mm and I believe I fit 8-32's in it ... have to check... Button head stainless bolts aren't available in metric ... Heck stainless allen head even cylindrical isn't available at Home depot ... I know I can buy custom bolts from a bolt speciality shop, but I dont anticipate needing 250 bolts - their minimum order for small sizes, in the near future... BTW you should try it and see how it fits... and post back here.
Cool.
Srinath.

I did some simple math above in red in the image I posted just to see if the bolt size you use and the metric are the same as you state they are.

It is still a simple numbers game but yes the pitch is almost corect but for some funny reason, maybe Sesame Street as a kid, 4.826mm does not equal 5.0mm. That is something like 3.5% off!  

If it calls for metric then use metric. There are no short cuts when dealing with other people's stuff as is the case  here.  If you want to use duct tape and super glue on your own bike go for it but if you are going to get paid by others to do a quality job then do a quality job.

I send the original bolts back always ... the SS bolts fit perfectly ... not look like they will strip out ... and always the stock is enclosed. Now I could buy steel 5mm .8 ones and save myself a nice couple bucks ...
Cool.
Srinath.

Quote from: seshadri_srinathButton head stainless bolts aren't available in metric ...

Cap head are available in SS and work just fine on the diaphragm and float bowls:

Plus, cap head use a bigger allen size than button head which just feels easier for me.

Let me know if you want me to send you some. I can git 'em pretty cheap 'round these parts. :cheers:

Quote from: John BatesAnd then there's pipe thread!!! :lol:

And don't forget about British Standard Pipe Thread (BSPT)

My TT600's got some o' dem!

Quote from: Pam G

And don't forget about British Standard Pipe Thread (BSPT)

My TT600's got some o' dem!

Soooooo..... Triumphs are put together with pipe threads? :lol:  :lol:  :lol:  :dunno:

OK I measured some 5 mm .80 and some ss 10-32 ... and tried screwing them in and shaking them ...
OK this is what I found...
2 threads up from the tip ... the 10-32 was .19, and the 5mm was .18+ ... almost .19 ... what ... isn't that supposed to be bigger ...
Then I screwed 2 threads in ... the SS one went in a shade smoother ... OK justtfiable cos its supposed to be smaller than 5mm, but the 5mm had this black crap coating on it ... and had some sharper ends on the threads ... and may be catching ... and then I shook them... they shook equally ... indicating that the play is ~ the same... Then I screwed in 6 threads or the entire lot that was in the carb ... and the SS one went smooth all the way, while the steel one... was tighter ... and I saw it was wobbling more ... and 6 threads were tight and needed a wrench ... That stupid thing had a bend in it ... My guess is ... their tolerance is higher than the difference in their specs... and for Home depot screws ... you're pretty much screwed ... their tolerance is rather liberal, and the higher $$$ and quality material in the SS makes for a better tolerance and better bolt. Buy from a machine shop supplier and you might get better tolerances on the bolts ... else metric=Machine thread=SAE ...  :?
Cool.
Srinath.

Quote from: seshadri_srinath.... else metric=Machine thread=SAE ...  :?
Cool.
Srinath.

Just spend the money and buy the correct bolts.  With a little research I found what you need in the correct size and a good price.

About 22 cents each before shipping.  

SAE and METRIC is not the same and the 10-32 and M5 are not the same diameter unless 4.826mm(0.190") = 5.000mm(0.1968").  Even the pitch is not the same( almost but not) so how can you justify using the wrong bolt when both the diameter and pitch are different?

OK nice ... I buy bolts at Home depot ... that's why ... their SS stuff is good probably, but their metric and sae probably are loose tolerances ... Now would these guys sell small bits and pieces ... or large lots only (- I know 25 isn't that big ... but more on that in a bit) and do they have order minimums ... cos the place I bought the bolts for the case guards from, lots of 250 for small stuff, and 100 for those 12 inch long case guard bolts. Now surprisingly you might think I would buy lots of 25 and not even blink ... but I have done 1 set of carbs in the last 1.5 months ... There is a lot of talk and posts about carbs this and that ... but no actual carbs comming to me ...  :lol:  ... hence I might not even buy 25 ... I buy 1 pack at a time at HD ... 4 in a pack ... perfect ... 1.07 for 4 steel, or 1.16 for 2 SS machine thread ... a pack of 25 I might still be working on if I bought one in jan 2004 ...
Cool.
Srinath.

Quote from: tkm433

Quote from: seshadri_srinath.... else metric=Machine thread=SAE ...  :?
Cool.
Srinath.

Just spend the money and buy the correct bolts.  With a little research I found what you need in the correct size and a good price.

About 22 cents each before shipping.  

SAE and METRIC is not the same and the 10-32 and M5 are not the same diameter unless 4.826mm(0.190") = 5.000mm(0.1968").  Even the pitch is not the same( almost but not) so how can you justify using the wrong bolt when both the diameter and pitch are different?

OK lemme put it in layman's terms ... 10-32 is 4.826 mm dia, the 5 mm I measured was under that. Dont exactly remember now but somewhere earlier in this post its there. The thread pitch is harder to check ... but the 5mm bolts had more damaged and more poorly cut threads and many had a slight bend in them. Its easier and cheaper to buy those. I buy the SS ones cos they fit and work better. Guess what ... not one carb has had threads get stripped. Mainly cos I prefer to put straight good quality bolts. Of course I know your McMasterCarr Idea. If you want to buy 100 bolts at a time and do people's carbs I'll be glad to send them all your way.
Dont type just to hear the sound of your keyboard. I dont do enough numbers or make enough margin on these to justify buying 100 bolts at a time. Home depot/Lowes sells bolts that are adequate and bolts that are better. I use the ones that are better. BTW I have opened my carbs 100 times and never had a issue with these bolts in the last 5 years.
Cool.
Srinath.

Quote from: seshadri_srinath

Quote from: tkm433

Quote from: seshadri_srinath.... else metric=Machine thread=SAE ...  :?
Cool.
Srinath.

Just spend the money and buy the correct bolts.  With a little research I found what you need in the correct size and a good price.

About 22 cents each before shipping.  

SAE and METRIC is not the same and the 10-32 and M5 are not the same diameter unless 4.826mm(0.190") = 5.000mm(0.1968").  Even the pitch is not the same( almost but not) so how can you justify using the wrong bolt when both the diameter and pitch are different?

OK lemme put it in layman's terms ... 10-32 is 4.826 mm dia, the 5 mm I measured was under that. Dont exactly remember now but somewhere earlier in this post its there. The thread pitch is harder to check ... but the 5mm bolts had more damaged and more poorly cut threads and many had a slight bend in them. Its easier and cheaper to buy those. I buy the SS ones cos they fit and work better. Guess what ... not one carb has had threads get stripped. Mainly cos I prefer to put straight good quality bolts. Of course I know your McMasterCarr Idea. If you want to buy 100 bolts at a time and do people's carbs I'll be glad to send them all your way.
Dont type just to hear the sound of your keyboard. I dont do enough numbers or make enough margin on these to justify buying 100 bolts at a time. Home depot/Lowes sells bolts that are adequate and bolts that are better. I use the ones that are better. BTW I have opened my carbs 100 times and never had a issue with these bolts in the last 5 years.
Cool.
Srinath.

and, I had srinath do my carbs.  I have plenty of mechanical knowledge, and those bolts were fine.  There were actually TIGHTER in the threads than the ones that came out.


tkm433:


Bottom line, is that us/sae/standard threads have LOWER tolerances (typically).  So, basically, real-world knowledge across at least two people have proved you wrong.