1-1/4-7 Hex Rethreading Die

A tap suitable for threading aluminum, steel, and stainless steel should have the following features: 1. Material: Made of high-speed steel (HSS) or cobalt (HSS-Co) for durability and heat resistance. 2. Coatings: o TiN (Titanium Nitride): Reduces friction and increases wear resistance, suitable for general applications. o TiCN (Titanium Carbonitride): Provides higher hardness and better performance in tougher materials like stainless steel. o TiALN (Titanium Aluminum Nitride): Excellent for high-speed operations and dry machining due to its superior heat resistance. o Bright (Uncoated): Ideal for aluminum to prevent material buildup on the tap. 3. Thread Type: Spiral point taps (for through holes) or spiral flute taps (for blind holes) for efficient chip evacuation. 4. Flute Design: o Spiral flutes: Best for aluminum and stainless steel to clear chips effectively. o Straight flutes: Suitable for general steel and simpler applications. 5. Lubrication: Use appropriate cutting fluids to minimize heat and galling, especially for stainless steel. 6. Tolerance and Thread Pitch: Ensure the tap matches the required thread size and tolerance class for the specific material.