24CT-75-S - Tweco 24CT-75-S Coarse Thread MIG Nozzle 3/4" Bore (2-Pack)

Tweco 24CT-75-S Coarse Thread Nozzle (2-Pack)

The Tweco 24CT-75-S Nozzle (Part Number 1240-1434) is a premium consumable designed for industrial MIG welding applications. Sold in a convenient package of two, these nozzles are engineered to fit Tweco No. 3 and No. 4 MIG guns, which are rated for 300 and 400 amps respectively. The defining feature of the 24CT series is the coarse thread design. Unlike slip-on nozzles or fine-thread variants, the coarse thread ensures a robust mechanical connection to the gas diffuser or conductor tube, significantly reducing the risk of the nozzle becoming loose during operation while remaining easy to remove even after exposure to high thermal cycles.

With a large 3/4-inch (19.05 mm) bore, this nozzle is specifically optimized for high-amperage welding where a larger volume of shielding gas is required to protect the weld pool from atmospheric contamination. This makes it an excellent choice for heavy fabrication, structural steel work, and other demanding environments where weld quality cannot be compromised. The nozzle is constructed from a high-quality copper alloy, providing excellent thermal conductivity to dissipate heat rapidly, thereby extending the service life of the consumable and the front-end parts of the gun.

Josef Gas provides these authentic Tweco consumables to ensure your equipment operates at peak efficiency. The 24CT-75-S is compatible with standard Tweco insulators and gas diffusers found on the classic No. 3 and No. 4 series guns. Whether you are running flux-cored wires with gas shielding or solid wires in spray transfer mode, the wide bore helps prevent gas turbulence and ensures smooth, porosity-free welds. Keep your production line moving with reliable, easy-to-change coarse thread nozzles.