Comparison : Item # CLNT-050-6-P-HH, 1/2-6 Hex Coil Nut Plain Heavy High
Item # CLNT-050-6-P, 1/2-6 Hex Coil Nut Plain
Item # CLNT-075-4.5-P-HH, 3/4-4.5 Hex Coil Nut Plain Heavy High
Item # CLNT-075-4.5-P, 3/4-4.5 Hex Coil Nut Plain
Item # CLNT-100-3.5-P, 1-3.5 Hex Coil Nut Plain