Re: [Harp-L] Stan Harper needs 00-90 screws & nuts

[Joseph Leone <3n037@xxxxxxxxxxx>]

On Aug 20, 2013, at 1:35 PM, Winslow Yerxa wrote:

> Richard Farrell had access to stuff that nobody else seemed to be able to get.

Blackie Schackner and I turned Richard on to eyeglass screws. BUT...I'm sure we weren't the first to discover this. :)  Actually it started with sunglasses. Ray Bans used to have frames made on Mauritius island. I checked with my home town jeweler Frank Benesh and he was able to get almost anything tiny for work on watches and other jewelry. I sent an envelope of them off to Farrell. Actually it was the NUTS that were hard to get as most uses for these tiny screws were by THREAD-IN only. 

The main problem: The angle of chamfer to the BOTTOMS of the countersunk heads had to be less than normal. Sort of flat or gradual. That way when working on watch parts that have chassis assemblies where the stock is only 1 mm or so in thickness, the chamfer doesn't take up the entire MEAT of the stock leaving nothing remaining for threads. 
The rule of thumb for just about anything attached with machine screws is: TWO threads minimum.  
> 
> That said, you can get 00-90 countersunk screws and nuts from online suppliers. However, the diameter of the head is larger than the ones Farrell supplied (see what I mean?)

Yes, I see exactly what you mean. You 'could' hold the screws in a small vise grip and twirl it against a file and take some of the diameter down...but best to find the small diameter in the first place. 

> which eats deeper into the reedplate when you countersink, leaving less of the reedplate's thickness to cut a thread to help hold the screw in place.

Oh, right, I hadn't gotten this far and I (basically) said the same thing above. 
> 
> The ones I've been able to find come from J. J. Morris Co., in Southbridge, MA.

Right again Wizard. Morris is right in the heart of what used? to be the American watch and clock industry. 


Good post Winslow. Very helpful. I didn't have the source material any more. Thank you so much. 
smokey joe
> 
> http://www.jimorrisco.com
> 
> Screw: part # F0090CE094 00-90 x 3/32 screw, stainless steel
> 
> Nut: Part @N0090B 00-90 brass hex nut
> 
> Winslow
>  
> Winslow Yerxa
> Author, Harmonica For Dummies, ISBN 978-0-470-33729-5
>             Harmonica Basics For Dummies, ASIN B005KIYPFS
>             Blues Harmonica For Dummies, ISBN 978-1-1182-5269-7
> Resident Harmonica Expert, bluesharmonica.com
> Instructor, Jazzschool for Music Study and Performance
> 
> 
> ________________________________
> From: Richard Sleigh <rharp@xxxxxxxxxx>
> To: harp-l@xxxxxxxxxx 
> Sent: Tuesday, August 20, 2013 6:15 AM
> Subject: [Harp-L] Stan Harper needs 00-90 screws & nuts
> 
> 
> When I was at the SPAH convention, I learned an interesting bit of harp tech history. Stan Harper told me that in the late forties he was getting his eyeglasses repaired and when he looked at the screws they were using, he realized that you could use them for harmonica reeds. He later told this to Richard Farrell, and Richard bought te thousand or so of these 00-90 screws and nuts in counter sunk and filister head styles, along with the nuts.
> 
> The Farrell rivet tool and the 00-90 screws were originally marketed to the chromatic harmonica community, but also became the main solution for reed replacement for the first generation of diatonic harmonica geeks. I started using them in the eighties after i discovered Richard Farrell through Pierre Beauregard.
> 
> Anyhow, Stan told me that he ran out of screws and is looking for a place to get them.
> 
> I am going to send him the few I have, but if any of you folks have some 00-90 counter sunk stainless steel screws that you are not using. please contact me off list, I'd like to get some put together for Stan. 
> 
> PS - SPAH was really great this year - more on that later...
> 
> 
> 
> 
> Richard Sleigh
> 
> P.O. Box 23
> Boalsburg PA 16827
> 
> Join my list & get entertaining emails and special offers- go to  http://rsleigh.com/ on the left hand side, give me your name & email & you're in!
> 
> http://www.rsleigh.com