need Gem thread size

[napoleon]

OK guys.
These handles all have the same thread...
http://www.collectorsencyclopedia.com/dettaglio.asp?IdProd=1461
http://www.collectorsencyclopedia.com/dettaglio.asp?IdProd=1457
http://www.collectorsencyclopedia.com/dettaglio.asp?IdProd=1428
http://www.collectorsencyclopedia.com/dettaglio.asp?IdProd=1276
So if anybody has any of these handles and can accurately measure the male thread size I'd be grateful

Thanks!

 

[T Rick]

I don't have a thread gauge here, but Tuesday evening will be in a class where one may be available. I'll take my Jr. Bar handle with me in case I can get it (if no one answers before then, though I bet Dave already knows it).

One thing for sure, it is bound to be in "Standard", not the Metric commonly used where you are. So it very likely will not equate to a Metric size. A typical occurrence in my industry is for someone to mistake a Metric thread for a Standard, since that is our normally encountered thread. When they try to mate one with another, typically the thread will start, (diameter matches or is very close), but the number of turns per inch (vs. I presume turns per Centimeter?) and/or pitch does not match up, causing the threads to bind, and if forced, to strip one part or the other.

 

[napoleon]

I know about the metric thing.
The threads will probably be one of the following:
#6-32- 0.138 inches
#8-32- 0.164 inches
#10-32- 0.189 inches
The gem lather catcher,ER lather catcher, star razor, discos (similar to kampfe) and my old 1912 ever-ready have the same thread size, the smaller one. The "newer" razors have a bigger thread size.
Looking forward to Tuesday
Thanks man!

And for everybody else, don't let this stop you from posting the answer. We don't want him to lose his handle on the way to class

 

[cooncatbob]

Napoleon needs the thread sizes because he wants me to make a handle for him.
Gem used 3 threads sizes.
The older razors used a #6-32, nominal size of .138 inch.
Later razors used a #8-32, nominal size of .164 inch.
Then the switched to #10-32, nominal size of .189 inch.
The easiest way to confirm the thread size is the thread size is to screw the proper machine screw into the razor head, since he lives in Croatia the local hardware store doesn't have English size machine screws.
Those of you in the US who might want to help can check your razors with common household screws.
#6-32 machine screws are used to hold on plastic switch plate covers.
#8-32 machine screws are commonly used with cabinet hardware, knobs and pulls.
#10-32 thread are what Gillette uses with all their 3 piece razors.

 

[napoleon]

.
.
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#10-32 thread are what Gillette uses with all their 3 piece razors.

I just tried and my newer 1912 fits to a gillette screw.
My other gems (that I need) are smaller in size. So the 10-32 is definitely out.

 

[T Rick]

Well, my Gem Junior Bar is a 1908, marked the same as the one shown in the 4th picture (but I have a different handle).

I tried a srew from an electrical outlet cover plate, it went in but was too small (sloppy and it would tilt when pulled sideways).

I tried a screw from the kitchen cabinets (a drawer pull), and it felt like it was going to go in, but did not quite (was a hair too big). So either my cabinet screws are not the atandard Bob suggests many are, or my razor does not use the size screw we're looking for. Any more thoughts?

 

[cooncatbob]

Well, my Gem Junior Bar is a 1908, marked the same as the one shown in the 4th picture (but I have a different handle).

I tried a srew from an electrical outlet cover plate, it went in but was too small (sloppy and it would tilt when pulled sideways).

I tried a screw from the kitchen cabinets (a drawer pull), and it felt like it was going to go in, but did not quite (was a hair too big). So either my cabinet screws are not the atandard Bob suggests many are, or my razor does not use the size screw we're looking for. Any more thoughts?

Your cabinet hardware might be metric, European hardware uses a metric screw that the same size as a #8-32 but the pitch (threads per inch) isn't quite the same.
Before the collapse of the housing industry here in Northern California I was a cabinet tech.
I worked for a modular cabinet distributor and I went to people homes and did warranty repairs and adjustments on their kitchen cabinet.
I always had to be sure I had some of the metric screws in my kit but if I didn't I had a #8-32 tap and I'd rethread the knob and use a #8-32 screw.

 

[tom myers]

All of the razors in question in the original post seem to be of the early "lather catcher" styles. In my experience with quite a few of these, they all seem to have 6-32 threads. As Bob mentioned, the later ASR razors did go to larger sizes, I suspect simply to make them a little more robust and not as likely to break or strip.

Regards,
Tom

 

[napoleon]

Bump

 

[napoleon]

Interesting. Now I don't get anything.
I got a vernier caliper from a friend and tried measuring the threads:
the star handle and the gem junior show 4,12mm, which is close to 8-32, 4.1656mm

The newer gem handle, in which a gillette thread fits, shows to be 4,52mm. It should be 10-32, 4.8006mm, which is not so close.

OK, it's maybe the caliper's fault.
The thing that confuses me is that the "newer" 1912 gem doesn't fit the older razors, but the handles from my old gem junior bar and the star fit the bigger female thread.

 

[T Rick]

Has this been resolved yet? Took my handle last night to the class I was going to, I was wrong, they didn't have a thread gage in the shop. But if you're still in need, I can take my razor to a hardware store tomorrow and simply try the sizes listed-or any others that it might take, to get a proper fit.

 

[cooncatbob]

Has this been resolved yet? Took my handle last night to the class I was going to, I was wrong, they didn't have a thread gage in the shop. But if you're still in need, I can take my razor to a hardware store tomorrow and simply try the sizes listed-or any others that it might take, to get a proper fit.

I think Napoleon's going to send me the old handle.
I'm pretty sure it's #8-32, the really old razors are a 6 and the newer razor are a 10.
I made these 2 handle for a client and they were a #8.

 

[napoleon]

Yes, I'll be sending him the handle. In the end, sending the handle across the wold is the most simple option