Drill Bit for Metal Forsage 4.8 mm HSS+Co, set of 10

Forsage 4.8 mm HSS+Co drill bits, supplied as a set of 10, are designed for reliable metal drilling where enhanced wear resistance and heat tolerance are required. Manufactured from high-speed steel with a cobalt alloy, these bits maintain hardness at elevated temperatures, enabling consistent performance when working with steels and a range of other metals. The set format provides multiple tools for repetitive tasks, maintenance operations, or workshop use with handheld drills and drill presses.

Advantages

High-speed steel with added cobalt improves cutting life and preserves edge hardness under higher temperatures compared with standard HSS bits. The 4.8 mm diameter offers a precise, commonly used hole size for many metalworking applications. Supplying the bits in a 10-piece set reduces downtime due to worn or broken tools and ensures continuity of work on jobs that require several identical holes. The geometry and material combination are suitable for both intermittent and continuous drilling in ferrous and non-ferrous metals when appropriate drilling speeds and lubrication are applied.

Suitable for

• Drilling holes in mild and alloy steels
• Workshop fabrication and metal maintenance tasks
• Use with handheld electric drills and drill presses
• Repair, installation and assembly jobs requiring repeatable 4.8 mm holes

Key specifications

• Diameter: 4.8 mm
• Material: high-speed steel with cobalt alloy (HSS+Co)
• Quantity: set of 10 pieces
• Intended use: drilling metals including ferrous and non-ferrous materials
• Compatibility: suitable for handheld drills and drill presses

How to use

Secure the workpiece firmly and select an appropriate clamping method to prevent movement. Mark the drilling point and, if necessary, center-punch to guide the bit. Fit the 4.8 mm HSS+Co bit in the drill chuck and tighten securely. Use appropriate cutting speeds for the metal being drilled—lower speeds for harder alloys—and apply cutting fluid or lubricant to reduce heat and prolong tool life. Drill with steady pressure; avoid excessive feed that can cause bit breakage. Withdraw periodically to clear chips when drilling deep holes, and allow the bit to cool if it becomes overheated.

Usage recommendations

For best results, use cutting fluid during drilling, select speed and feed according to material hardness, and replace bits from the set as they show wear to maintain hole quality and safety.