Irwin HSS TCT Drill Bit – 10502636

This 4.5mm Irwin HSS TCT drill bit offers precision drilling capability for hardened materials at a mid-range diameter. The 4.5mm size is particularly useful for specific engineering tolerances and applications where standard sizes like 4mm or 5mm don't provide the exact clearance needed. The C2 tungsten carbide tip is engineered to drill through the toughest materials including hardened steel, cast iron, bronze alloys, and manganese alloyed steel, handling hardness levels up to 50 Rockwell C. The four-facetted ground tip design is crucial for maintaining accuracy at this diameter, ensuring perfect centring whilst reducing the drilling pressure required for smooth operation. The Chrome Vanadium Steel body is hardened to 56 Rockwell C, delivering excellent rigidity and wear resistance. Designed for stationary machine use, this 4.5mm drill bit performs best when used with a 3-6% coolant emulsion as recommended by Irwin. This coolant application is essential for maintaining cutting efficiency and maximising the service life of the drill bit. Features and Benefits: • 4.5mm diameter for precise engineering tolerances • C2 carbide tip drills materials up to 50 Rockwell C • Four-facetted grind ensures accurate centring • Hardened Chrome Vanadium Steel construction • Single bit per pack Specifications: Tip Diameter (mm): 4.5 Working Length (mm): 47 Overall Length (mm): 80 Pack Qty.: 1 Diameter: 4.5mm. Total length: 80mm.