#4 x 10mm (3/8'')..Pan head Zinc Pl screw. Thead Tapping Qty 100
Pan head Tapping Thread Robertson Steel Screws.
The Original /L Robertson Square drive screw with Zinc Finish.
Type A shhet metal threads for tapping into sheet metal,plastic or wood.
Sharp point for excellent material engagement and thread starting.
Variety of sizes and head styles.
#0 is the driver bit size for #4 gauge screws.
This is a YELLOW colour coded bit or hand driver.