Overview Reviews Product Description No.6 x 5/16 inch Flat Head Square (Robertson) Tapping Screw, 18.8 Stainless Steel Product Videos Custom Field UOM EA Product Reviews Write a Review Write a Review × 6X5/16 TAPPING SCR FLAT HD ROB 18.8 SS Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *