Hongfeng C-type Composite Spot Drills for Nonferrous Metals Bright Uncoated M3-M14 Sizes
These Hongfeng Type C compound center drills combine drilling and chamfering functions in a single tool, designed as stepped drills for pre-tapping hole preparation. Available in specifications from M3 to M24 with straight shank, they are fully compatible with drill presses and CNC machining equipment.
Precision-machined cutting edges and optimized flute geometry guarantee smooth chip removal and steady cutting performance. They produce precisely dimensioned stepped holes with clean burr-free chamfers, maintaining consistent dimensional accuracy throughout sustained machining operations.
Perfect for pre-tapping machining of various metal workpieces, they eliminate secondary chamfering processes to shorten production cycles. They cut down tool changeovers, reduce overall manufacturing costs and effectively boost comprehensive machining efficiency.
