In drawing convention BS8888, how would you draw a knurled screw?

Question

i am trying to do an engineering drawing, and i have to include a knurled screw. how would you draw this? do you need to do cross-hatched lines to specify the knurled surface?

Answer 1

I agree with the above answer except I would only cross hatch the lower portion but the cross hatching would be close together maybe 2-3 millimetre apart and the upper portion would "fade" to indicate that it continued above the area shown

Answer 2

In my day yes you would cross hatch the whole or part of the surface to clearly indicate a knurled finish