Dormer A7774.8 A777 Hsco Heavy-Duty Jobber Drill 4.80Mm Ol:86Mm Wl:52Mm

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Dormer A7774.8 A777 Hsco Heavy-Duty Jobber Drill 4.80mm Ol:86mm Wl:52mm

Engineered for the toughest drilling applications, this Dormer A777 heavy-duty jobber drill bit delivers exceptional durability and precision in professional and industrial environments. The 4.80mm diameter bit is crafted from premium high-speed cobalt (HSCO) steel, ensuring outstanding heat resistance and extended tool life when working with challenging materials such as stainless steel, alloy steels, and hardened metals. Its 135-degree split point design reduces walking on contact and enables fast, accurate penetration without the need for a centre punch, making it ideal for high-stress production runs and maintenance work.

- 135-degree split point for self-centring and reduced thrust, minimising workpiece damage

- HSCO (high-speed cobalt) construction provides superior red hardness and wear resistance

- Heavy-duty jobber geometry optimised for robust chip clearance and efficient swarf evacuation

- 4.80mm diameter with 86mm overall length and 52mm flute length for deep drilling capability

- Suitable for drilling into stainless steel, cast iron, high-tensile alloys, and hardened steels

- Precision-ground flutes with a bright finish for low friction and smooth cutting action

- Conforms to Dormer’s exacting quality standards for consistent performance under heavy loads

Trust the Dormer A777 to power through demanding drilling tasks with unwavering reliability.

GTIN: 7320760375181