Press Fit Thumb Screw Knobs, Red Knurled Knobs 100 Piece Set, #4 Screw Size, 5/16 Head Dia – 99-699-1

Press Fit Thumb Screw Knobs, Red Knurled Knobs 100 Piece Set, #4 Screw Size, 5/16" Head Dia Knurled head types have a pattern of ridges that allow for easy gripping and tightening by hand. Knurled head types are common in applications requiring frequent fa