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Flute Design: A-OIL-Spiral Flute engineered to optimize oil delivery and promote efficient chip evacuation
Precision-Driven Construction: Built to withstand daily use in demanding environments while maintaining alignment and consistent performance over time
and hobbyists rely on its reliable performance to reduce rework and downtime while maintaining dimensional accuracy
Typical use: Used to measure and verify the pitch diameter of internal threads in metric fine fasteners during inspection and assembly workflows
Right‑Hand Configuration: Optimized for right‑hand cutting to improve chip evacuation and surface finish in typical bore sequences
Dormer Pramet C139 8.5mm HSS-E-Powder Metal TICN Flatted Shank 2 Flute Standard Length Slot Drill DIN 844 K Boring Bar Blank Flute Design: A-OIL-Spiral Flute engineeredThe Dormer Pramet C139 8. 5 mm slot drill is a precise, two flute HSSE tool with TiCN coating, designed for reliable slot milling, shoulder milling, and ramping in freemachining steels and related materials. Compatible with DIN 844 K holders and featuring a robust 10 mm Weldon shank with a flatted section for secure clamping, it suits high precision machining in busy workshops. Diameter: 8. 5 mm Length of cut: 19 mm Overall length: 69 mm Shank:
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