The IDEAL Wire-Nut Wire Connector set new standards for innovation, quality and convenience when it was first introduced in 1928. As the first screw-on wire connector in America, it literally set the industry standard for years to come.With a fixed, square-wire spring and a positive grip shell, the Wire-Nut is perfect to twist-on with fingers for a secure connection that will last. The refined wire range makes it the best choice for fine stranded wire applications. The Wire-Nut also features a tough, flame-retardant thermoplastic shell that withstands environmental extremes and is reusable for easy circuit changes and addition.With five color-coded models available, Wire-Nut Wire Connectors will handle any job from as small as #22 gauge wire up to #6 gauge wire.Additionally, Models 71B, 72B, and 73B, in both color or black high-temp, are the only twist-on wire connectors rated for use in Air Handling Spaces. These connectors can be used on Class 2 or low-voltage connections inside plenums, ducts, and other environmental air handling spaces without the need for a box.

IDEAL®, 30-071, Wire Connector, Flame-Retardant, Series: 71B®, Positive Grip Shell Style, Fixed/Square Wire Spring, Solid/Stranded Copper Wire, 22 to 16 AWG Wire, 300 VAC, Specifications: 1/4 in Solid, 5/16 in Stranded Wire Strip, 1 to 5 Conductors, 16 to 2 AWG Minimum, 16 to 2 AWG Maximum Conductor Combination Size, 221 deg F, Polypropylene, Gray, Zinc Plated, 21/64 in W x 37/64 in H Dimensions