Wholesale left hand drill bits

Wholesale left hand drill bits are specialized cutting tools designed to remove broken screws, bolts, and studs. They rotate counterclockwise, gripping the fastener as you drill, often extracting it without further damage. This guide explores the different types, materials, sizes, and applications of wholesale left hand drill bits, helping you choose the right ones for your needs and where to find reliable suppliers like Wayleading Tools.

Understanding Left Hand Drill Bits

Standard drill bits rotate clockwise and are used to create holes. Left hand drill bits, also known as reverse drill bits, rotate counterclockwise. This reverse rotation is crucial for their primary application: removing broken fasteners. As the bit bites into the broken screw or bolt, the counterclockwise rotation attempts to unscrew the fastener, often extracting it before a hole is fully drilled.

Why Use Left Hand Drill Bits?

Using left hand drill bits offers several advantages over traditional extraction methods:

  • Reduced Damage: The unscrewing action minimizes the risk of further damaging the surrounding material or threads.
  • Increased Efficiency: Often, the bit will extract the fastener before a separate extractor is needed.
  • Versatility: They can be used on a variety of materials, including metal, wood, and plastic.

Types of Left Hand Drill Bits

While the core function remains the same, left hand drill bits come in different types, each suited for specific tasks:

Cobalt Left Hand Drill Bits

Cobalt drill bits are made from high-speed steel (HSS) with added cobalt. This makes them exceptionally hard and heat-resistant. Cobalt left hand drill bits are ideal for drilling into tough materials like stainless steel, hardened steel, and cast iron. They are more expensive than other types but offer superior performance and longevity. A good example of a quality cobalt drill bit set is the Milwaukee Cobalt Drill Bit Set [1].

High-Speed Steel (HSS) Left Hand Drill Bits

HSS drill bits are a more economical option for general-purpose drilling. They are suitable for use on softer materials like aluminum, brass, and plastic. While they are not as hard or heat-resistant as cobalt bits, they are still a good choice for many DIY and light industrial applications. Irwin Tools offers a wide range of HSS left hand drill bits known for their durability [2].

Titanium Coated Left Hand Drill Bits

Titanium coating adds a layer of hardness and wear resistance to HSS drill bits. This extends their lifespan and improves their performance, particularly when drilling into abrasive materials. Titanium-coated left hand drill bits offer a good balance between performance and cost. DeWalt is a popular brand offering titanium-coated drill bit sets [3].

Choosing the Right Size

Selecting the correct size left hand drill bit is crucial for successful fastener extraction. The drill bit should be slightly smaller than the diameter of the broken screw or bolt. This allows the bit to grip the fastener without damaging the surrounding threads.

Here's a general guideline for selecting the right size:

Broken Fastener Size Recommended Drill Bit Size
#6 Screw 1/8'
#8 Screw 9/64'
#10 Screw 5/32'
1/4' Bolt 7/64'
5/16' Bolt 1/4'

Applications of Left Hand Drill Bits

Left hand drill bits are used in a wide range of applications, including:

  • Automotive Repair: Removing broken exhaust manifold bolts, head bolts, and other fasteners.
  • Construction: Extracting broken screws from wood framing, metal studs, and other building materials.
  • Manufacturing: Repairing machinery and equipment with broken or damaged fasteners.
  • DIY Projects: General home repair tasks involving broken screws and bolts.

Tips for Using Left Hand Drill Bits

To maximize the effectiveness of left hand drill bits, follow these tips:

  • Use a Center Punch: Before drilling, use a center punch to create a pilot point in the center of the broken fastener. This will help guide the drill bit and prevent it from wandering.
  • Apply Consistent Pressure: Apply steady, even pressure while drilling. Avoid excessive force, which can break the bit.
  • Use Cutting Oil: Apply cutting oil to the drill bit and the broken fastener. This will help to reduce friction and heat, extending the life of the bit.
  • Start Slowly: Begin drilling at a slow speed and gradually increase it as the bit bites into the fastener.
  • Consider a Screw Extractor: If the left hand drill bit doesn't extract the fastener on its own, you can use a screw extractor in conjunction with the drilled hole.

Where to Buy Wholesale Left Hand Drill Bits

When purchasing wholesale left hand drill bits, it's essential to choose a reputable supplier that offers high-quality products at competitive prices. Wayleading Tools is a trusted supplier of a wide range of cutting tools, including left hand drill bits. We pride ourselves on offering durable and reliable tools to meet your specific needs. Consider browsing our selection and contacting us with any questions.

Factors to Consider When Choosing a Supplier

Consider the following factors when selecting a supplier:

  • Product Quality: Ensure that the supplier offers high-quality drill bits made from durable materials.
  • Price: Compare prices from different suppliers to find the best deal.
  • Selection: Choose a supplier that offers a wide range of sizes and types of left hand drill bits.
  • Customer Service: Select a supplier with excellent customer service and a good return policy.
  • Shipping Options: Check the supplier's shipping options and delivery times.

Conclusion

Wholesale left hand drill bits are indispensable tools for removing broken fasteners quickly and efficiently. By understanding the different types, sizes, and applications of these bits, you can choose the right ones for your specific needs. Remember to select a reputable supplier like Wayleading Tools to ensure that you receive high-quality products and excellent customer service. Investing in a good set of left hand drill bits will save you time and frustration in the long run.

1 Milwaukee Tool. (n.d.). Cobalt Drill Bits. Retrieved from https://www.milwaukeetool.com

2 Irwin Tools. (n.d.). Drill Bits. Retrieved from https://www.irwin.com

3 DeWalt. (n.d.). Drill Bit Sets. Retrieved from https://www.dewalt.com

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