Comparison : Item # HTLN-00-PH, 0.391-32 Peripheral Lock Style, Heavy Duty Inch Bearing Locknut
Item # HTLN-01-PH, 0.469-32 Peripheral Lock Style, Heavy Duty Inch Bearing Locknut
Item # HTLN-02-PH, 0.586-32 Peripheral Lock Style, Heavy Duty Inch Bearing Locknut
Item # HTLN-03-PH, 0.664-32 Peripheral Lock Style, Heavy Duty Inch Bearing Locknut
Item # HTLN-04-PH, 0.781-32 Peripheral Lock Style, Heavy Duty Inch Bearing Locknut