Ok, got this electric drill made by S-B.....one of the screws holding the gearbox to the casing has sheared...I'm having difficulty in identifying the thread.
With thread gauges, its either 32 tpi or 0.8 mm in pitch, the diameter measures approx 0.158 in or just over 4.01mm
It isnt metric, nor is 5/32 BSW....I dont think its UNC because the diameter is smaller than an 8-32 bolt form.....
Any other ideas?