I often find myself in a bind looking to replace screws, nuts or bolts. Usually when working on the motorcycles and something becomes stripped out.
I got these on eBay $40 for both metric and SAE.

I don't know if I would have paid $50 each for them, but I think they were a steal at $20 each.

Attached Thumbnails

 

__________________
05 KC SE Smoke
01 Suzuki 600 GSF
88 Fiero 2M4

Here's the link I forgot to add before.

http://gorillatool.com/page_8.html

__________________
05 KC SE Smoke
01 Suzuki 600 GSF
88 Fiero 2M4

Interesting. I use a mic or dial calipers to determine diameter and then use a pitch gauge for thread size. That is the first time I've seen a set which incorporates the gauge for checking the diameter.

Its particularly important to have gauges when working metric and SAE as many folks have mistakenly switched one fastener type for another. Not a good idea.

Personally, I wish SAE would drop off the face of the Earth. The metric system is so much easier to use. Remember the ole BASE 10? Well the metric system is completely based on BASE 10.

Lets see now, 1/16th of an inch is 0.0625" !

One meter is 39.36" therefore a millimeter is 0.03936" so easy to calculate.

Red

__________________
2005 Titan KC SE, Helwig, True-Track, ARE MX Canopy

Yeah, the added feature of the pitch gauge is what sold me. I found them accidentally while searching for something else. A bargain!

__________________
05 KC SE Smoke
01 Suzuki 600 GSF
88 Fiero 2M4

Those are pretty cool, I wish I was more of an Ebayer but I'm still a little leery of the place.