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

[Vern <jevern@xxxxxxx>]

The SS 00-90 flat-head screws from Morris Co. have a head height (H) = .028"   Most reed plates are about .040" thick.  That leaves only .012" of hole remaining for only one .011" thread.



Flat #303 Stainless Steel Screw
Item Number:	F0090CE094
Item Name:	Flat #303 Stainless Steel Screw
Item Desc:	00-90 X 3/32 Flat #303 Stainless Steel Screw. Burr Free.
Thread Size:	00-90 (0.047 in.)
Body Length:	3/32
Thread Diameter:	.0450-,0470
Slot Width J:	.010-.016
Slot Depth T:	.007-.013
Dimension A:	.085-.093
Dimension H:	0.028 REF
Material:	#303 Stainless Steel
Head Type:	Flat
Body Length Decimal:	0.09375
Volume Pricing (Prices Per: 100)
1-499	$81.50
500-999	$57.00
1000-1999	$49.00
2000-29999	$39.50
  

The centerline of the countersink determines the screw location.  It you happen to place it off the slot centerline, you must file the rivet hole to align the reed in the slot.  This is true for this reed and for any future replacement.  

That is why I prefer to tap the hole in the plate and use 0-80 screws with no nuts.  If you are careful, you can tap the rivet-hole 0-80 without first enlarging it.  There is less danger of getting the hole off-center with respect to the slot.  The screws and nuts are less costly and easier to keep track of.  You may still have to work on the hole in the reed but the amount of offset error is likely to be less.

Recently, I have started soldering reeds instead of using screws.  This method does not depend on the location of a rivet/screw hole in the plate. No holes are required, making the method ideal for replacing welded-on reeds.

See http://www.youtube.com/watch?v=DOBJCpZQ68Y

Vern


On Aug 20, 2013, at 10:35 AM, Winslow Yerxa <winslowyerxa@xxxxxxxxx> wrote:

> Richard Farrell had access to stuff that nobody else seemed to be able to get.
> 
> 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?) 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.
> 
> The ones I've been able to find come from J. J. Morris Co., in Southbridge, MA.
> 
> 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