12pk, Drillco Jobber Length Drill Bit, #48, Point Angle 135°, High Speed Steel (SQ9126551WT14)

The black-and-gold finish on these drill bits lubricates the bits and provides some resistance to wear and rust. These bits have spiral flutes that evacuate chips as the bits drill into a workpiece. They also have flats on their shank that help prevent the bits from slipping in a drill chuck when drilling at high speeds or under heavy loads.

Non-coolant-through high-speed steel jobber-length drill bits do not have coolant holes, so a separate hose is required to bring coolant to the bits' tip if it is needed. High-speed steel drill bits provide more flexibility and absorb more shock and vibration than cobalt, powdered-metal, and carbide drill bits, making them suitable for use in manual drilling machines and handheld power tools. They may leave a rough finish on the hole. Jobber-length drill bits are the most commonly used drill-bit length. They provide a good balance of strength and accuracy when drilling into a range of materials.

• Item: Jobber Length Drill Bit

• Drill Bit Size: #48

• Decimal Equivalent: 0.076

• Measurement System: Wire

• Material - Machining: High Speed Steel

• Finish - Machining: Black & Gold

• Drill Bit Point Angle: 135 Degrees

• Drill Bit Point Type: Split Point

• Coolant Fed: Non-Coolant Through

• Flute Type: Spiral

• Number of Flutes: 2

• Flute Length: 1"

• Maximum Drilling Depth: 0.304"

• Helix Angle: 28 Degrees

• Cutting Direction: Right Hand

• Spiral Direction: Right Hand

• Shank Type - Machining: Straight

• Shank Dia.: 0.076"

• Shank Length: 1"

• Overall Length: 2"

• Depth:Dia. Ratio: 4xD

• Drill Length Class: Jobber Length

• Drill Point Length: 0.0157"

• Drill Bit Grouping: Individual

• Series: 1878

• Standards: ASME B94.11M

• Drill Diameter Tolerance: +0"/-0.0005"

• Primary Material Application: Cast Iron, Steel

• Primary Material Application ISO Code: K, P