Carbide Jobber Drill 5/16 Inch, 2-Flute
Product Overview
If you're looking for a reliable drill bit that gets the job done precisely, our Carbide Jobber Drills are designed just for you. Whether you’re tackling metalworking, machining, or a precision drilling task, these drill bits offer outstanding performance and durability.
Crafted with a 2 flute 20-degree helix and a sharp 118-degree four-facet split point, they make cutting through materials smoother and more accurate. These drills provide excellent control and minimized walking when starting holes.
Perfect for professionals who demand efficiency and quality, these Carbide Jobber Drills combine precision manufacturing with top-notch materials to keep you efficient and on point. Ready to elevate your drilling game? You’ll notice the difference with every cut!
Key Features
- Standard or Double Cut options for versatile drilling needs.
- 2 flute 20-degree helix design for smooth chip evacuation.
- Sharp 118-degree four-facet split point reduces walking and improves centering.
- Precision tolerances: Diameter +.000/-.0005 for consistent fit and finish.
- Flute length of 2-3/8 inches allowing deep, clean cuts.
- Overall length of 3-3/4 inches for standard reach in most applications.
- Hard tungsten carbide material ensures long tool life and durability.
- Ideal for drilling in hard metals and other tough materials.
- Metric size: 7.94 mm (equivalent to 5/16 inch) for accurate sizing.
- Compatible with a wide range of drill chucks and machines.
Specifications
- Shape / Type – Jobber Drill
- Cut Type – Standard Cut or Double Cut
- Head Diameter – 5/16 inch (7.94 mm)
- Flute Length – 2-3/8 inches
- Overall Length – 3-3/4 inches
- Material Compatibility – Metals and harder materials requiring carbide tools
- Brand / Manufacturer – Burrs4Less
- Made In – USA
- SKU / Part Number – 30742
Durability and Precision That Keep Your Shop Running
Investing in our Carbide Jobber Drills means fewer interruptions and less frequent drill bit swapping. Their tough carbide construction withstands wear better than standard steel bits, meaning you get consistent, precise holes day in and day out while reducing downtime for maintenance or replacements. Over time, this reliability adds up to significant savings and smoother workflow, perfect when tight deadlines and high productivity matter most.
Trusted Quality Backed by Burrs4Less Expertise
At Burrs4Less, we know that quality tools make all the difference in a professional environment. Our Carbide Jobber Drills are the result of decades of expertise sourcing and manufacturing premium carbide cutting tools. Our team ensures every bit meets tight specs so you can trust the results. Plus, our USA-based operations guarantee quick delivery and responsive support—essentials for shops striving to maintain competitive edges and maximize efficiency.
Case Study: Real Business, Real Results
Chicago-based Precision Metalworks needed to upgrade their drilling tools to improve hole accuracy and reduce bit wear.
"Switching to Carbide Jobber Drills drastically cut our downtime and produced cleaner, precise holes every time. Our operators love how dependable these drills are."
Megan T. – Production Manager
Increased output by 35% while reducing tool replacement frequency.
Why the Four-Facet Split Point Makes Drilling Easier
Ever tried starting a hole and watched your drill bit slip or wander? That’s where the four-facet split point comes in handy. Think of it as giving your drill bit a steady footing, much like how cleats on a running shoe grip the ground. The facets sharpen the point and split the cutting edges, so when you start drilling, the bit owns the spot and doesn’t walk around. This means cleaner holes, less wobble, and reduced effort for you — especially important when working with tough metals or precision parts.
Installation and Maintenance Guide
Setting It Up
- Ensure your drill chuck is clean and free from debris before inserting the bit.
- Insert the Carbide Jobber Drill fully into the chuck and tighten firmly to prevent slipping.
- Confirm your drill press or hand drill speed settings match the recommended RPM for carbide drills.
- Use cutting fluid or lubricant when drilling tougher metals to extend tool life.
- Test on scrap material first to dial in feed rates and speed.
Keeping It Going
- Regularly clean the drill bit after use to remove metal chips and residue.
- Inspect for signs of wear or chipping before starting new projects.
- Sharpen or replace bits promptly to maintain clean and accurate drilling.
- Store the bits in a protected case to prevent damage to the cutting edges.
- Avoid overheating by intermittently cooling with cutting fluid during heavy use.
Frequently Asked Questions
Q: What materials are these Carbide Jobber Drills suitable for?
They are perfect for metals and other hard materials where carbide tooling is preferred for longevity and precision.
Q: What is the difference between Standard Cut and Double Cut?
Standard Cut drills have one helical cutting edge per flute, while Double Cut knives have two, which allows faster cutting and smoother finishes on tough materials.
Q: How does the four-facet split point benefit drilling?
It helps center the drill bit accurately and reduces walking at the start of drilling, resulting in cleaner holes.
Q: Are these drill bits compatible with hand drills and drill presses?
Yes, as long as your chuck can securely hold the 5/16 inch shank, these drills will work well in both setups.
Q: What speeds should I use with these carbide drill bits?
Lower speeds with adequate lubrication are recommended to prolong tool life and avoid overheating.
Q: What does the tolerance +.000/-.0005 mean?
This tight tolerance ensures the drill bit's diameter is extremely precise, guaranteeing consistent hole sizes.
Q: How long is the flute length on these drills?
The flute length measures 2-3/8 inches, allowing for effective chip removal during drilling.
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Q: How do I know when it’s time to Replace or Resharpen the burr?
Replace or Resharpen it when you notice decreased cutting efficiency or visible wear on the cutting edges.
Why Choose Burrs4less?
Discover top reasons to pick our carbide burrs for your projects. Factory-direct quality at wholesale prices.
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Premium Quality
Pro-grade tungsten carbide burrs for durable, precise work.
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Affordable Pricing
Wholesale rates from USA manufacturer, high performance.
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Fast & Free Shipping
24-hour shipping, free on $100+ orders.
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Expert Guidance
Team assists in picking ideal burr for materials.
Ready for Order
Don't let subpar drill bits slow your progress. Upgrade today with our precision Carbide Jobber Drills and experience consistent, clean holes on every job. Order now and get back to work with confidence!
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