Looking for a source of a very small T4 screw.

S

Sure Shot Rick

Joined
Feb 25, 2006
Messages
44
I had a very tiny T4 screw fall out of my Benchmade / Lone Wolf PAUL Prankster. I had an old Small Parts catalog but find the company does not exist any longer. I think it was absorbed by AMAZON. I searched AMAZON and had no luck. I have also searched many Knife building supply companies I have bookmarked. Again no luck. I'm thinking Jewelry supply. Can anyone set me on a path to find this elusive screw?
 
I have found Emerson screws at hobby , RC type stores. You can also try Pc and Electronics supply .
 
Try Fastenal, but you need a better description of your screw than the tool engagement size. Try diameter, thread pitch, length, head type, material, finish, tool fitment, etc.
 
You might try a machining/engineering shop near you, they might have the knowledge to find what you need. either that or find someone with a mcmaster-carr catalog.
 
I have a bunch of screws here... What's the thread pitch? It's probably a 0-80 or 1-72 with a head that small...
 
View attachment 1008213 Here is a thread chart. The first column is nominal size. 2nd column is major diameter in decimal inches (measured at the tips of the threads). Minor diameter is measured at the base of the threads. The other columns are thread pitch in TPI (threads per inch). The whole numbers are US sizes. The rest are metric sizes (mm/thread converted to TPI).
Screw thread diameter measurements are usually a little less (a few thousands) than the stated size. This avoids tight fits. Nuts are usually over the stated size for the same reason.
For example, notice that between the US wire gauge sizes of #2 and #3 there are three metric sizes. You need a micrometer or caliper to distinguish between the sizes. Thread combs or nuts of a known size can let you zero in on the thread pitch.
 
Once you figure out the thread size, it should be fairly easy to find the correct screw. Try Olander.com, they have an incredible inventory.

Have you tried to call Benchmade?
 
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