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Description
The Irwin 5/16" x 2-13/16" HSS Fractional Screw Machine Drill Bit (30120) is a high-performance cutting tool engineered for professionals who demand precision, strength, and reliability. This bit is specifically designed with a shorter, "stubby" length to provide exceptional rigidity and minimize the risk of breakage, making it an excellent choice for challenging industrial, automotive, and machine shop applications. Constructed from premium high-speed steel and finished with a protective black oxide coating, this drill bit is built to withstand rigorous use while resisting corrosion. The advanced 135-degree split-point tip allows for immediate and precise drilling without the need for a pilot hole or center punch, ensuring accurate starts on contact with the workpiece. Its straight shank design ensures broad compatibility with a variety of drilling machines and chucks. This versatile drill bit is capable of cleanly and efficiently drilling through a wide range of materials, including wood, steel, cast iron, aluminum, and plastic, making it an essential addition to any professional's toolkit.
KEY FEATURES AND BENEFITS:
- Instant Drilling Start: The 135-degree split-point tip prevents walking, allowing for accurate drilling without a pilot hole or center punch.
- Durable Construction: Made from premium high-speed steel for extended tool life in tough materials.
- Corrosion Resistance: Black oxide coating protects against rust and maintains bit performance.
- Enhanced Rigidity: Short screw machine length increases strength, reducing the risk of breakage in demanding tasks.
SPECIFICATIONS:
- Model/SKU: 30120
- Drill Diameter: 5/16"
- Overall Length: 2-13/16"
- Flute Length: 1-5/8"
- Material: High Speed Steel (HSS)
- Finish: Black Oxide
- Point Angle: 135°
- Point Type: Split/Self-Centering
- Shank Type: Straight
- Included in Purchase: Single drill bit
HOW TO USE:
- Select the correct bit: Confirm the 5/16" size matches your drilling needs.
- Secure the bit: Insert the straight shank into your drill’s chuck and tighten firmly to prevent slipping.
- Prepare the material: Clamp or secure the workpiece to prevent movement during drilling.
- Position the drill: Place the bit tip precisely on the desired spot; the split point aids in accurate starts.
- Drill at proper speed: Use moderate speed and steady pressure; reduce speed for harder materials.
- Clear chips: Periodically pull the bit out to remove debris, preventing overheating and clogging.
- Complete the hole: Continue drilling until the required depth is reached.
BENEFITS OF USING IRWIN 5/16" X 2-13/16" HSS FRACTIONAL SCREW MACHINE DRILL BIT (30120):
- Eliminates the need for center punching, saving time and improving drilling accuracy.
- Offers long-lasting durability with high-speed steel and protective coating.
- Shorter design improves rigidity, reducing bit breakage in confined or tough drilling conditions.
- Reliable for diverse materials, making it a versatile choice for industrial and repair work.
FEATURES:
- Constructed from high-speed steel for superior performance and durability.
- Straight shank ensures a secure fit in most chucks.
- Black oxide finish provides rust and corrosion resistance.
- Compact, rigid design enhances strength and reduces snapping risk.
- Self-centering 135-degree split-point tip for precise hole starts.
- Suitable for drilling wood, metal, cast iron, aluminum, plastic, and more.
- Ideal for industrial, automotive, and machine shop applications.
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