B&P Lamp 8/32 Brass Ball-Head Thumb Screws, 3/4" Thread Length - B&P Lamp 8/32 Brass Ball-Head Thumb Screws, 3/4" Thread Length, 8/32 Thread Brass Ball-Head Thumb Screws, Unfinished, Sizes in thread length, head diameter 3/8". Features Include: 8/32 Brass Ball-Head Thumb Screws, 3/4" Thread Length, Designed by B&P Lamp Supply, Solid Brass