Comparison : Item # Z74F0110, Square Head Set Screws Cup Point, National Fine, Case Hardened (1/2"-20)
Item # Z74F0115, Square Head Set Screws Cup Point, National Fine, Case Hardened (1/2"-20)
Item # Z74F0120, Square Head Set Screws Cup Point, National Fine, Case Hardened (1/2"-20)
Item # Z74F0125, Square Head Set Screws Cup Point, National Fine, Case Hardened (1/2"-20)
Item # Z74F0130, Square Head Set Screws Cup Point, National Fine, Case Hardened (1/2"-20)