Comparison : Item # Z400175, Slotted Round Head Machine Screws, National Coarse, Zinc Plated Steel (8-32)
Item # Z400180, Slotted Round Head Machine Screws, National Coarse, Zinc Plated Steel (8-32)
Item # Z400185, Slotted Round Head Machine Screws, National Coarse, Zinc Plated Steel (8-32)
Item # Z400190, Slotted Round Head Machine Screws, National Coarse, Zinc Plated Steel (8-32)
Item # Z400195, Slotted Round Head Machine Screws, National Coarse, Zinc Plated Steel (8-32)