Thread: 5-45 screw
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Old 03-29-2006, 01:11 PM
  #3  
dr_wogz
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Default RE: 5-45 screw

Maybe it's a metric one measured in imperial?

My 'bible' (Machinist's handbook - ver 25) has UN threads at 32, 40, 44, 48, 56 per inch.

5-44 is concidered UNF
5-40 is concidered UNC

Unles it might mean the grade or type?