Description
These general purpose high-speed steel jobber-length drill bits for metal and plastic have regular spiral flutes that are best suited for nonchipping hard materials such as nonferrous metals, cast iron, and structural steel.
- High Speed Steeldrill bits absorb more shock and vibration than cobalt and carbide, making them suitable for use in manual drilling machines and handheld power tools.
- Black Oxidecoating improves lubricity to reduce friction, minimize heat buildup, and improve wear resistance, chip flow, and tool life. It is a good choice for general purpose drilling and working with soft materials, such as plastic and low-carbon steel, and should not be used with aluminum and nonferrous metals.
- Jobber-Lengthdrill bits are the most commonly used and provide a good balance of strength and accuracy when drilling into a variety of materials.
- Split Pointdrill bits are self-centering, requires less pressure to start, limits walking when used in stationary and portable drills.
- Spiral Flutedrill bits are used in most general purpose holemaking applications to effectively evacuate chips as they drill into the workpiece.
- Hex Shankdrill bits have six flat sides that prevent the bit from slipping in high-torque applications. Hex shanks install in standard drill chucks.
- 135 drill bits are used on harder materials like stainless steel or titanium.
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