Overview Reviews Product Description 4mm x 8mm/.31" long set screw, cup point end, black oxide finish with 2mm hex. Sold as 1 each. Product Videos Custom Field Product Reviews Write a Review Write a Review × Set Screw, 4mm Dia x 8mm Lg Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *