# Screw Tolerance Tester Test how tight your tolerances are for screws. Can test from 0.0 - 0.2.
The screws and nuts are M10 1.5.
## Guide to Models
### Screws Print one or both..
Screw - 0.1mm Tolerance Screw - 0.0 Tolerance
### NutPlates You can either print the 5 in 1 test, or the individual torances you require. I think the 5-in-1 is a good place to start, then you can print the individual nutplates as you callibrate your machine.
## Tolerances A tolerance has been applied to each of the 4 faces of a screw and also the threads. The total tolerance will be the sum of the tolerance on the screw + the tolerance of the nut. Therefore if you are using the screw 0.10 and the nut 0.10 the total tolerande is 0.20.
## Getting tighter tolerances If you are having trouble with tolerances not been great enough, i suggest doing both Silcer Flow and E-Step calibration for each filament you print with. Use the really useful guide from Teaching Tech, the link is below.