These custom knurled slotted thumb screws were manufactured at 5,000 pieces using low carbon steel material with zinc clear finish.  6-32 thread was incorporated at .375″ length underneath the head.  Knurled head diameter was set to .313″ and head height to .188″.  The slotted drive was .035″ +/-.005″ deep and .045″ +/-.005″ wide.  Our customer used these custom screws in their electronics assembly process.  Full certs were made available to our customer upon request.