Comparison : Item # Z420645, Slotted Flat Head Machine Screws, National Coarse, Zinc Plated Steel (3/8"-16)
Item # Z420650, Slotted Flat Head Machine Screws, National Coarse, Zinc Plated Steel (3/8"-16)
Item # Z420655, Slotted Flat Head Machine Screws, National Coarse, Zinc Plated Steel (3/8"-16)
Item # Z420660, Slotted Flat Head Machine Screws, National Coarse, Zinc Plated Steel (3/8"-16)
Item # Z420665, Slotted Flat Head Machine Screws, National Coarse, Zinc Plated Steel (3/8"-16)