left hand drill bits Supplier

Left hand drill bits are specialized tools designed to remove broken screws, bolts, and studs. They rotate counter-clockwise, gripping the fastener as they drill and often backing it out without further extraction methods. This guide explores their uses, types, selection, and where to source high-quality bits.

Understanding Left Hand Drill Bits

What are Left Hand Drill Bits?

Unlike standard drill bits that rotate clockwise, left hand drill bits are designed to rotate counter-clockwise. This unique rotation is key to their primary function: extracting damaged fasteners. When drilling into a broken screw or bolt, the counter-clockwise rotation can grip the fastener and, ideally, unscrew it before needing a separate extraction tool. Wayleading Tools provides an extensive range of these specialized tools.

How Do They Work?

The process is straightforward: a pilot hole is first created in the center of the broken fastener. Then, a left hand drill bit of appropriate size is used to drill into the pilot hole. As the bit rotates counter-clockwise, it attempts to grip the sides of the hole. If successful, the friction will cause the broken fastener to unscrew and be removed. This is particularly useful for fasteners that are seized or corroded, saving time and preventing further damage.

Types of Left Hand Drill Bits

High-Speed Steel (HSS)

HSS left hand drill bits are a common and versatile option. They offer a good balance of hardness, toughness, and cost-effectiveness, making them suitable for a wide range of materials, including steel, aluminum, and plastic. They are a great starting point for most extraction tasks.

Cobalt Steel

Cobalt steel left hand drill bits contain a higher percentage of cobalt, which significantly increases their heat resistance and hardness. This makes them ideal for drilling into tougher materials like stainless steel, hardened alloys, and cast iron. They maintain their cutting edge at higher temperatures, resulting in longer tool life.

Titanium Nitride (TiN) Coated

These bits are coated with titanium nitride, a hard ceramic material that reduces friction and increases wear resistance. TiN coated left hand drill bits are well-suited for repetitive drilling tasks and can extend the life of the bit, especially when working with abrasive materials. They also help to prevent the bit from seizing in the hole.

Selecting the Right Left Hand Drill Bit

Material Compatibility

The material of the left hand drill bit should be compatible with the material of the broken fastener. Using a bit that is too soft can lead to premature wear or breakage, while a bit that is too hard may chip or shatter. Refer to material hardness charts to ensure compatibility.

Size and Diameter

Choosing the correct size is crucial. The drill bit should be slightly smaller than the diameter of the broken fastener. Too large, and you risk damaging the surrounding threads or the component itself. Too small, and you may not be able to grip the fastener effectively. Start with a small pilot hole using a standard drill bit, then select the appropriate left hand drill bit size.

Drill Speed

Using the correct drill speed is essential for safe and effective extraction. Generally, slower speeds are better for harder materials, while faster speeds are suitable for softer materials. Refer to a drill speed chart for the specific material you are working with. Using cutting fluid can also help to reduce friction and heat, extending the life of the bit.

Where to Find Reliable Left Hand Drill Bit Suppliers

Online Retailers

Numerous online retailers offer a wide selection of left hand drill bits. Sites like Amazon, McMaster-Carr, and Grainger provide extensive product listings, customer reviews, and competitive pricing. However, quality can vary, so it's important to read reviews and check the supplier's reputation before making a purchase.

Specialty Tool Suppliers

Specialty tool suppliers, such as Wayleading Tools, offer a curated selection of high-quality left hand drill bits. These suppliers often have knowledgeable staff who can provide expert advice on selecting the right bit for your specific application. They also tend to carry brands known for their durability and performance. You can explore their offerings at www.wayleading.com. Finding a reliable left hand drill bits Supplier is key to ensuring you have the right tool for the job.

Industrial Supply Companies

Industrial supply companies like MSC Industrial Supply and Fastenal cater to businesses and offer a wide range of tools, including left hand drill bits. They typically provide bulk discounts and have extensive catalogs with detailed product specifications.

Tips for Using Left Hand Drill Bits Effectively

Preparation is Key

Before attempting to extract a broken fastener, clean the area thoroughly and remove any debris. Use a center punch to create a pilot point for the drill bit. This will help to prevent the bit from wandering and ensure that it drills directly into the center of the broken fastener.

Use Cutting Fluid

Applying cutting fluid or lubricant can significantly reduce friction and heat, extending the life of the left hand drill bit and improving its performance. It also helps to prevent the bit from seizing in the hole. WD-40, cutting oil, or even water can be used as cutting fluid.

Apply Steady Pressure

Apply steady, even pressure while drilling. Avoid forcing the bit, as this can cause it to break or damage the surrounding material. Let the bit do the work. If the bit starts to bind, stop drilling and apply more cutting fluid.

Troubleshooting Common Issues

Bit Slipping

If the left hand drill bit is slipping, try using a center punch to create a deeper pilot point. You can also try using a slightly larger bit, but be careful not to damage the surrounding threads or material.

Bit Breaking

If the bit is breaking, it may be due to excessive pressure, using the wrong drill speed, or drilling into a material that is too hard. Reduce the pressure, adjust the drill speed, or use a bit made from a harder material, such as cobalt steel.

Fastener Not Unscrewing

If the fastener is not unscrewing, it may be too tightly seized or corroded. Try applying heat to the fastener to loosen it up. You can also try using a penetrating oil to help break the corrosion. If these methods fail, you may need to use a screw extractor tool.

Table: Comparison of Left Hand Drill Bit Materials

Conclusion

Left hand drill bits are indispensable tools for anyone working with machinery, automotive repairs, or general maintenance. Understanding their function, types, and selection criteria is essential for effective and safe use. By following the tips and troubleshooting advice outlined in this guide, you can successfully extract broken fasteners and avoid further damage. Remember to source your left hand drill bits from a reliable supplier like Wayleading Tools to ensure quality and performance. Consider Wayleading Tools for all your tooling needs, and visit www.wayleading.com for more information on their product range.

Disclaimer: The information provided in this article is for general informational purposes only. Always consult with a qualified professional before attempting any repairs or modifications. Wayleading Tools is not responsible for any damages or injuries that may result from the use of this information.

Source: Information gathered from industry best practices and product specifications available on manufacturer websites. Please refer to the specific manufacturer's data sheets for detailed product information.