Overview Reviews Product Description #8x 1/2 inch Steel Truss Head Square (Robertson) Drive Tapping Screw-Type A, Zinc Plated Product Videos Custom Field UOM EA Product Reviews Write a Review Write a Review × 8X1/2 TAPPING SCR TRS HD ROB Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *