At 03:00 PM 6/27/2010 Sunday, Mike \"Rocket J Squirrel\" wrote: >I was wondering how to interpret "B4,8x38" -- so, what is that -- 4.8mm >(3/16'') diameter and, uh, 38 TPI? The "B" ... ? 38 mm long would be 1 and .992125984/2 inches long. Type B has a 60ddeg flank angle thread and can form a thread in soft materials. The end of the screw is blunt, offering more thread engagement in short length applications. Type AB is likewise but has a sharp point. Type 25 has a blunt point with a thread-tapping slot cut in the end. Type TEK2 adds a drill point so it can drill its own holes. Yr Servant, d |
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