Schmidt K6 threads

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hooked

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Can anyone confirm that the Schmidt K6 converter uses M7.5 x 0.75 threads? I have now tried two different crap taps from Amazon and eBay, but neither seems to fit. Neither is stamped, so I am guessing the taps are junk or just the wrong size. Does anyone use another, close, more readily available tap for this converter?

I can't find another besides eBay. It probably comes from the same factory as the tap I already have, which doesn't work, and won't arrive until mid-November. I do not want to get this made through TAPCO as this is for a one time customer request. Any advice would be appreciated.



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hooked said:
Can anyone confirm that the Schmidt K6 converter uses M7.5 x 0.75 threads? I have now tried two different crap taps from Amazon and eBay, but neither seems to fit. Neither is stamped, so I am guessing the taps are junk or just the wrong size. Does anyone use another, close, more readily available tap for this converter?

I can't find another besides eBay. It probably comes from the same factory as the tap I already have, which doesn't work, and won't arrive until mid-November. I do not want to get this made through TAPCO as this is for a one time customer request. Any advice would be appreciated.



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Curious - why are you not simply sticking the converter into the end of the nib and use the threading for the Jowo Nib section - M7.4 x .5 on the section to hold the nib assembly? The nib assembly has an o ring press fit for the converter into it. Am I missing something?

Kevin
 
NJturner said:
Curious - why are you not simply sticking the converter into the end of the nib and use the threading for the Jowo Nib section - M7.4 x .5 on the section to hold the nib assembly? The nib assembly has an o ring press fit for the converter into it. Am I missing something?

Kevin
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I have someone who does not like friction-fit converters and requested a threaded K6 converter in their pen.

Fred Bruche said:
Yes, M7.5x.75 is correct. I got mine from Richard Greenwald back when.
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Thank you. I found another to try on Amazon. I'll give it a shot.
 
hooked said:
I have someone who does not like friction-fit converters and requested a threaded K6 converter in their pen.


Thank you. I found another to try on Amazon. I'll give it a shot.
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Well I learned something new today! I wasn't even aware they came threaded. I have been concerned with the converter potentially loosening if it's jostled a lot, so I've kept my drilling a bit tighter to minimize the space that the converter can bang around within the pen body. Going to have to look at threaded converters.
 
Oh. I understand your question now. The K5, which is what I typically use, is a friction fit. The K6 is threaded. My understanding is that some people believe the K6 is superior because it is less likely to come loose if dropped or handled roughly.

I have seen a few makers switch to the K6 in the last couple of years. I want to offer it as an option in the future. I will let everyone know if this latest tap I am getting from Amazon is any good once I receive it.

Amazon.com: Aceteel Metric Thread Tap M7.5 X 0.75, HSS Machine Tap Right Hand M7.5x0.75mm : Industrial & Scientific

Buy Aceteel Metric Thread Tap M7.5 X 0.75, HSS Machine Tap Right Hand M7.5x0.75mm: Thread Milling Taps - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
www.amazon.com
 
I single point mine, so I don't really know what limit/fit of tap would work best. I do know that the thread isn't typical metric 60 degree. The root is truncated and requires a larger drill than what one would calculate for an M7.5x.75. The way I make mine is to cut the section to accept a cartridge or K5 converter and then cut the threads for the K6.
 
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