XPost: alt.home.repair   
   From: olsonm@tiny.invalid   
      
   In rec.autos.tech Scott Dorsey  wrote:   
   > Paul in Houston TX   wrote:   
   >>It's difficult to say for sure with out viewing the head markings or   
   >>seeing better photos.  It could be the small pixel count of the photo or   
   >>the zinc plating, but... the machining just does not look crisp / sharp.   
   >>    There are striations on the bolt head and nut that are not seen on   
   >>quality bolts and nuts.  The nut appears to be much thinner than a good   
   >>quality nut.   
   >   
   > There are good fasteners, crappy fasteners, and the very worst,   
   > electrician-grade fasteners.   
   >   
   > Striations are a bad sign and so are threads that aren't cut sharply, or   
   > even worse appear to be rolled rather than cut.   
      
   Rolled threads can have some advantages over cut threads. It depends   
   on the material and the application. They are not always inferior.   
      
   https://accu-components.com/us/p/360-rolled-thread-vs-cut-thread   
   the-differences-benefits-of-each-thread-type   
      
   I agree that the fasteners in the photo look like poor quality parts.   
      
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