Comparison : Item # PF0044040C, PF0044040C - 4-40 Slotted Panel Fasteners
Item # PF0044062C, PF0044062C - 4-40 Slotted Panel Fasteners
Item # PF2502060C, PF2502060C - 1/4-20 Slotted Panel Fasteners
Item # PF2502082C, PF2502082C - 1/4-20 Slotted Panel Fasteners
Item # PF2502004C, PF2502004C - 1/4-20 Slotted Panel Fasteners