Comparison : Item # S4020005, 18-8 Stainless Steel Phillips Oval Head Machine Screws, National Coarse (4-40)
Item # S4020010, 18-8 Stainless Steel Phillips Oval Head Machine Screws, National Coarse (4-40)
Item # S4020015, 18-8 Stainless Steel Phillips Oval Head Machine Screws, National Coarse (4-40)
Item # S4020020, 18-8 Stainless Steel Phillips Oval Head Machine Screws, National Coarse (4-40)
Item # S4020025, 18-8 Stainless Steel Phillips Oval Head Machine Screws, National Coarse (4-40)