Checking screw sizes

My eyes are bad. What I would like to have is a block (or something)
that has the common computer screw sizes. Anyone have a suggestion?

On Dec 11, 6:44*am, Metspitzer wrote:
My eyes are bad. *What I would like to have is a block (or something)
that has the common computer screw sizes. *Anyone have a suggestion?

Not clear what you are looking for.

RL

Metspitzer wrote:
My eyes are bad. What I would like to have is a block (or something)
that has the common computer screw sizes. Anyone have a suggestion?

Unless you know someone that works in a machine shop, good luck with
that as I doubt you would find anything you could afford. But you (or a
friend with better eyesight) can measu

American:

http://www.engineersedge.com/screw_threads_chart.htm

Measure the screw diameter and count the number of threads that would
span 1.00 inch in length for American thread sizes.


Metric:

http://www.carbidedepot.com/formulas-tap-metric.htm

Measure the diameter. If you are using an inch rule multiply by 25.4 to
convert to millimeters. Count the number of threads spanning one
millimeter (1/25.4 of an inch).

Note that the screw diameter will be slightly smaller than the major
diameters listed in the charts so that it doesn't bind when screwed into
a tapped hole. But unless you are using mikes or calipers to measure
with the difference probably won't be noticable.

John

Metspitzer wrote:
My eyes are bad. What I would like to have is a block (or something)
that has the common computer screw sizes. Anyone have a suggestion?

Most computer screws are either 6-32, 4-40, or M3 (metric). I would suggest
purchasing a box of nuts in each of those sizes to keep on hand for grading
your screws.

Alternately, you could buy a tap of each one and make your own grading block
(I have never seen one available commercially).

Jon

On 12/11/2010 9:07 AM, John wrote:
Metspitzer wrote:
My eyes are bad. What I would like to have is a block (or something)
that has the common computer screw sizes. Anyone have a suggestion?

Unless you know someone that works in a machine shop, good luck with
that as I doubt you would find anything you could afford. But you (or
a friend with better eyesight) can measu

American:

http://www.engineersedge.com/screw_threads_chart.htm

Measure the screw diameter and count the number of threads that would
span 1.00 inch in length for American thread sizes.


Metric:

http://www.carbidedepot.com/formulas-tap-metric.htm

Measure the diameter. If you are using an inch rule multiply by 25.4
to convert to millimeters. Count the number of threads spanning one
millimeter (1/25.4 of an inch).

Note that the screw diameter will be slightly smaller than the major
diameters listed in the charts so that it doesn't bind when screwed
into a tapped hole. But unless you are using mikes or calipers to
measure with the difference probably won't be noticable.

John

Small screws used in computers only fall into a limited number of sizes
and length and pitch.

I have a similar eyesight issue, and went into Harbor Freight and bought
an assortment package which contains many tiny screw sizes, a little
plastic storage container with labels of each size, and matching washers
and hex nuts. When I bought it a couple years ago it was on sale for
around $10.

Now whenever I need a screw or nut or washer, I walk over to my little
plastic drawers and find a match very easily.

Maybe this technique will work for you also. If not, you could go to a
hardware store and purchase a small variety of hex nuts in different
sizes and thread pitches, and keep them in labeled envelopes to use for
matching a specific screw. This would be a less expensive approach than
buying a set of assorted sizes you may never use.

On Sat, 11 Dec 2010 07:26:58 -0800, "Jon Danniken"
wrote:

Metspitzer wrote:
My eyes are bad. What I would like to have is a block (or something)
that has the common computer screw sizes. Anyone have a suggestion?

Most computer screws are either 6-32, 4-40, or M3 (metric). I would suggest
purchasing a box of nuts in each of those sizes to keep on hand for grading
your screws.

Alternately, you could buy a tap of each one and make your own grading block
(I have never seen one available commercially).

Jon

The nut idea I guess is best. It would be nice to have them all lined
up, but having the proper nut size does help my problem.

Thanks everyone

On Dec 11, 11:54*am, Metspitzer wrote:
On Sat, 11 Dec 2010 07:26:58 -0800, "Jon Danniken"

wrote:
Metspitzer wrote:
My eyes are bad. *What I would like to have is a block (or something)
that has the common computer screw sizes. *Anyone have a suggestion?

Most computer screws are either 6-32, 4-40, or M3 (metric). *I would suggest
purchasing a box of nuts in each of those sizes to keep on hand for grading
your screws.

Alternately, you could buy a tap of each one and make your own grading block
(I have never seen one available commercially).

Jon

The nut idea I guess is best. *It would be nice to have them all lined
up, but having the proper nut size does help my problem.

Thanks everyone

Try your local hardware store for a Thread Gauge. They come in
different standards and are less than $10.00 bucks.
-J

On Sat, 11 Dec 2010, jinxy wrote:

On Dec 11, 11:54*am, Metspitzer wrote:
On Sat, 11 Dec 2010 07:26:58 -0800, "Jon Danniken"

wrote:
Metspitzer wrote:
My eyes are bad. *What I would like to have is a block (or something)
that has the common computer screw sizes. *Anyone have a suggestion?

Most computer screws are either 6-32, 4-40, or M3 (metric). *I would suggest
purchasing a box of nuts in each of those sizes to keep on hand for grading
your screws.

Alternately, you could buy a tap of each one and make your own grading block
(I have never seen one available commercially).

Jon

The nut idea I guess is best. *It would be nice to have them all lined
up, but having the proper nut size does help my problem.

Thanks everyone

Try your local hardware store for a Thread Gauge. They come in
different standards and are less than $10.00 bucks.

That's what they're called. I was going to say, when I bought my tap &
die set a few years ago, it came with such a gauge.

Michael

On Sat, 11 Dec 2010 04:39:00 -0800 (PST), RayLopez99
wrote:

On Dec 11, 6:44*am, Metspitzer wrote:
My eyes are bad. *What I would like to have is a block (or something)
that has the common computer screw sizes. *Anyone have a suggestion?

Not clear what you are looking for.

A metal plate with female-threaded holes matching the common computer
screws.

I'd like one, also.

On Dec 12, 7:45*am, Loren Pechtel
wrote:
On Sat, 11 Dec 2010 04:39:00 -0800 (PST), RayLopez99

wrote:
On Dec 11, 6:44 am, Metspitzer wrote:
My eyes are bad. What I would like to have is a block (or something)
that has the common computer screw sizes. Anyone have a suggestion?

Not clear what you are looking for.

A metal plate with female-threaded holes matching the common computer
screws.

I'd like one, also.

Really? I never thought of something like this but what is the point
of it? It seems illogical: if you can screw the male threaded screw
into the female hole, by definition of course the screw fits--but how
would you screw the screw in in the first place? By feel? That's the
only thing I can think of. A more practical suggestion is to buy
screws in little boxes and keep them each in their own place.

RL