Comparison : Item # Z430005, Phillips Flat Head Machine Screws, National Coarse, Zinc Plated Steel (2-56)
Item # Z430010, Phillips Flat Head Machine Screws, National Coarse, Zinc Plated Steel (2-56)
Item # Z430015, Phillips Flat Head Machine Screws, National Coarse, Zinc Plated Steel (2-56)
Item # Z430020, Phillips Flat Head Machine Screws, National Coarse, Zinc Plated Steel (2-56)