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.