Comparison : Item # Z74F0180, Square Head Set Screws Cup Point, National Fine, Case Hardened (5/8"-18)
Item # Z74F0185, Square Head Set Screws Cup Point, National Fine, Case Hardened (5/8"-18)
Item # Z74F0190, Square Head Set Screws Cup Point, National Fine, Case Hardened (5/8"-18)
Item # Z74F0195, Square Head Set Screws Cup Point, National Fine, Case Hardened (5/8"-18)
Item # Z74F0200, Square Head Set Screws Cup Point, National Fine, Case Hardened (5/8"-18)