[Hammarlund] SP-600JX-17 Mounting screw size?

[Les Locklear]

Original Hammarlund factory cabinets had tapped rails that fit behind the front panel of the cabinet. They were 10-32 screws. Depending on whether or not you used washers index the screw heads, 1/2" or 5/8" works. If one was is in the thicker cupped washers. Maybe 3/4". I had a Hammond cabinet with speed nuts that were used and, they too used 10-42 screw

Les



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-------- Original message --------
From: Bill Riches <bill.riches at verizon.net>
Date: 06/19/2017 1:06 PM (GMT-06:00)
To: "'Kenneth G. Gordon'" <kgordon2006 at frontier.com>, 'Bill' <bmarx at bellsouth.net>
Cc: Hammarlund at mailman.qth.net
Subject: Re: [Hammarlund] SP-600JX-17 Mounting screw size?

Normal rack screws are 10/32.  The two SP600 original cabinets had 10/32
screws in them - the rails were not tapped - had speed nuts over the holes
that were drilled in the rails.

73,

Bill, WA2DVU
Cape May

-----Original Message-----
From: hammarlund-bounces at mailman.qth.net
[mailto:hammarlund-bounces at mailman.qth.net] On Behalf Of Kenneth G. Gordon
Sent: Monday, June 19, 2017 1:17 PM
To: Bill <bmarx at bellsouth.net>
Cc: Hammarlund at mailman.qth.net
Subject: Re: [Hammarlund] SP-600JX-17 Mounting screw size?

On 19 Jun 2017 at 12:38, Bill wrote:

> Help...
> Why can't I find the right screw size, to mount the SP-600JX-17 in an
> original cabinet? Fine thread, course thread??? I could only find a
> 1/4 " screw in 1/2" and 3/4" lengths in 10-32 or fine thread. Is there a
3/16th"

Although I am not too sure of the length, I DO know that standard rack
screws are 12-24 thread. As far as I am concerned, length is not too
important, as long as they are long enough to "reach". I believe that all I
have here are about 1" in length.

I can get some types at the local hardware store, but I believe the original
type was filister-head, and most also included a dress-washer.

Some commercial rack-mounted equipment used a binder-head screw.

But in every case that I have had experience with, the screw SIZE was 12-24.

If I am wrong on this, I am sure someone here will correct me. ;-)

Ken W7EKB

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