Ten pack of 5/8'' (1-1/8 Hex) old style, heavy duty, pre-1968 flare nuts made in the USA using the highest level of brass consisting of 65% copper and 35% which means high-tensile strength while resisting corrosion. The forging process of fittings maximize strength and eliminate cracking.

Two pack of 3/4'' (1-3/8 Hex) old style, heavy duty, pre-1968 flare nuts made in the USA using the highest level of brass consisting of 65% copper and 35% which means high-tensile strength while resisting corrosion. The forging process of fittings maximize strength and eliminate cracking.

Twenty-five pack of 1/4'' (3/4 Hex) old style, heavy duty, pre-1968 flare nuts made in the USA using the highest level of brass consisting of 65% copper and 35% which means high-tensile strength while resisting corrosion. The forging process of fittings maximize strength and eliminate cracking.

Twenty-five pack of 3/8'' (7/8 Hex) old style, heavy duty, pre-1968 flare nuts made in the USA using the highest level of brass consisting of 65% copper and 35% which means high-tensile strength while resisting corrosion. The forging process of fittings maximize strength and eliminate cracking.

Ten pack of 1/2'' (1 Hex) old style, heavy duty, pre-1968 flare nuts made in the USA using the highest level of brass consisting of 65% copper and 35% which means high-tensile strength while resisting corrosion. The forging process of fittings maximize strength and eliminate cracking.