Rear Strut Stud (tap and die specs)

[iamandrewx]

I don't have a gauge to help me figure out what size tap and die I need to fix my rear studs. Anyone with a gauge want to help me out and post what sizes I need to use?

Thanks in advance!


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[xb33bsa]

if its a 70's honda cb its prolt m10 ? off the top of my head the pitch escapes me ...but any bolt with a known pitch can be used as a pitch "gauge" and to measure what diameter slip an open end wrench over it voila !! size gauge

 

[iamandrewx]

Sorry. A 78 to be exact.


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[xb33bsa]

you need to drill and tap it or just chase/repair the thread ? and i explained already how to measure it yourself

 

[CALfeRacer]

It's a stud, so he shouldn't be doing any drilling. Size is M10 (10mm), pitch is probably 1.5. Easiest way to check is exactly what xb said, just get a few nuts (ha!) with known pitch, most common will be 1.25 and 1.5 for M10, then try to thread them on to the stud and see which works.

 

[xb33bsa]

It's a stud, so he shouldn't be doing any drilling. Size is M10 (10mm), pitch is probably 1.5. Easiest way to check is exactly what xb said, just get a few nuts (ha!) with known pitch, most common will be 1.25 and 1.5 for M10, then try to thread them on to the stud and see which works.

well not exactly kinda hard to use a nut on knackerd threads to verify pitch... however another BOLT or SCREW can be used just like a real pitch gauge on an external thread it is the same principle and allows checking a thread that is too far smashed to put a nut on
you can verify the diameter simply using a wrench(the open end) as a non adjustable caliper
honda bolts are always in even sizes m6,8,10,12
there would be nothing wrong with drilling and tapping the upper stud on a cb honda

 

[CALfeRacer]

I looked it up, listed as M10. Good point on the nut, forgot the issue is that his threads are bad.

 

[sav0r]

If you have a thin cutting wheel you can cut a slot in a nut and thread it on. The slot creates a sharp edge that will clean up the threads as you turn it on. It's not the best solution, but it works in a pinch. That said, dies are cheap and can be be found in a wide variety of metric sizes at Home Depot and Lowes. I have a couple of Irwin brand dies that I think I got from Home Depot for like $4 each and they do the job very well for chasing threads.