6290NX-4 - Flame Tech 6290NX-4 Propane Cutting Tip, Size 4, Harris Style

Heavy-Duty Propane Cutting Performance

The Flame Tech 6290NX-4 is a premium replacement cutting tip designed for industrial oxy-fuel cutting applications using Propane or Natural Gas. Engineered to meet or exceed OEM specifications, this tip is fully compatible with Harris style torches and cutting attachments. The 6290NX series is characterized by its "General Purpose" design with a heavy preheat capacity, which is essential when using alternative fuels like propane that have a lower flame temperature in the primary cone compared to acetylene. This specific Size 4 tip is rated for cutting heavy steel plates ranging from approximately 3 inches to 6 inches in thickness, making it a vital consumable for structural steel fabrication, scrap yards, and heavy equipment repair.

Constructed with a two-piece design, the 6290NX-4 features a brass inner member with precision-machined splines and a copper outer shell. This configuration optimizes gas flow and mixing, resulting in a stable, high-temperature preheat flame that brings the base metal to kindling temperature quickly. The separation of the inner and outer parts also facilitates easy cleaning of the splines, allowing users to maintain optimal performance over the life of the tip. The double O-ring seal ensures a tight, leak-free fit within the torch head, promoting safety and efficiency during operation. By utilizing propane or natural gas, operators can achieve clean, high-quality cuts on thick sections while significantly reducing fuel gas costs compared to acetylene.