Overview Product Description Zinc Plated, Open Lag Screw Hook. Size 1/4" x 3 1/2" with 5/16" Lag Thread. Product Videos Custom Field Product Reviews Write a Review Write a Review × Screw Hook, 1/4" X 3-1/2", 5/16" Lag Thread, 500 pieces Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *