> Nebent to Bit`o diametras 1mm. Tada turetu tikti :)

http://en.wikipedia.org/wiki/Screw :

The formula for number sizes smaller than size #0 is given by
d = .060" - (#zerosize x .013), with the zero size being the number of
zeros after the first. So a #00 screw is .047" dia, #000 is .034" dia,
etc.

  Vadinasi,
        #0 -- 1.52 mm,
        #00 -- 1.19 mm,
        #000 -- 0.86 mm.

-- 
  saimhe