Comparison : Item # PLHN-716-20, 7/16-20 Threads (C) Peripheral Lock Hex Nut
Item # PLHN-12-20, 1/2-20 Threads (C) Peripheral Lock Hex Nut
Item # PLHN-58-18, 5/8-18 Threads (C) Peripheral Lock Hex Nut
Item # PLHN-34-16, 3/4-16 Threads (C) Peripheral Lock Hex Nut
Item # PLHN-78-14, 7/8-14 Threads (C) Peripheral Lock Hex Nut