Overview Reviews Product Description 1/4 inch x 20 TPI x 1/2 inch Flat Head Phillips Machine Screw Product Videos Custom Field UOM EA Product Reviews Write a Review Write a Review × 1/4-20X1/2 MACH SCR FLAT HD PHIL Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *