Comparison : Item # HSQN02500XXX, Heavy Square Nut, 1/4" Nominal Dia.
Item # HSQN03125XXX, Heavy Square Nut, 5/16" Nominal Dia.
Item # HSQN03750XXX, Heavy Square Nut, 3/8" Nominal Dia.
Item # HSQN04375XXX, Heavy Square Nut, 7/16" Nominal Dia.
Item # HSQN05000XXX, Heavy Square Nut, 1/2" Nominal Dia.


Use trailing wildcard (*) for broader results.