#10 x 1" Robertson Square Pan Head Screws - Box of 100

The original Robertson square drive system invented by PL Robertson more than a century ago. Robertson “Cling Fit” screws are the best fitting in the industry when paired with our Racky Driver Bits. The pan head screw features a semi elliptical top surface with a flat bearing surface. It is a fully threaded single lead type “A” thread, with gimlet point. Ideal for use in wood, metal and plastics.