OSCARBIDE 3/8"x 2" HSS Annular Cutter 3/4" Weldon Shank Mag Drill Bit
- Precision Annular Cutter Specifications: 3/8" cutting diameter, 2" cutting depth, and 3/4" Weldon shank with 2 flats for secure mounting and stability during operation
- Premium M2AL High-Speed Steel Construction: Crafted from durable M2AL high-speed steel with excellent wear resistance and heat tolerance, ensuring long service life even under heavy-duty drilling conditions
- Up to 10x Faster Than Standard Twist Drills: Thin-walled design with dual alternating teeth delivers aggressive, efficient cutting that requires less force and time for large-diameter hole drilling
- Burr-Free Holes with Minimal Material Waste: Produces smooth, reamed holes with high accuracy, reducing scrap and material waste. The multiple cutting edges enable cleaner cuts with lower friction for extended tool endurance
- Standard 3/4" Weldon Shank with 2 Flats: Fits most standard magnetic drills as well as machine tools such as mills and large drill presses, ensuring secure clamping and broad compatibility
- Versatile Across Multiple Materials: Suitable for drilling ferrous and non-ferrous metals, cast iron, stainless steel, aluminum, copper, plastic, and wood, in both plate and pipe forms for engineering, bridge construction, shipbuilding, and aerospace applications
- Re-Sharpenable Design for Extended Life: HSS core drill can be re-sharpened on a grinding machine, extending its useful life and providing excellent long-term value for professional and hobbyist applications
- Included Pilot Pin for Accurate Starting: Pilot pin guides the cutter into the workpiece for precise starting, then retracts during drilling to allow lubrication that reduces heat buildup and improves performance
Estimated shipping
Select a product to estimate shipping.3/8" cutting diameter. 2" effective cutting depth. One pass, one hole—no peck drilling, no retracting
Precision-engineered for rapid 2" depth cutting with 3/4" Weldon shank compatibility
Brand Name: OSCARBIDE
Material: High Speed Steel (HSS)
Weldon Shank: 3/4 inch
Cutting Depth: 2 inch
Cutting Diameter: 3/8 inch
Number of Flats: 2
Cut Holes 10× Faster – Say Goodbye to Slow, Frustrating Twist Drills
Premium Material
Made with premium high speed steel material, for longer service life and high heat resistance,the biggest advantage of HSS core drill is its ability to re-sharpen.
Superior Cutting Performance Across Materials
Cut Holes in 15 Seconds Body: 80% faster than traditional hole cutting methods
Annular Cutters cut only the periphery of the hole,ejecting the remaining center as a slug.It produces accurate burr-free holes to close tolerances without pre-drilling or step drilling.
Best used with a drill press or magnetic drilling machine, both for their stability against high torque forces created by such a drill bit and lower RPMs compared to other types of drills. these cutters can be easily used with light duty drilling machines or portable magnetic base drilling machines.
Time saving:The annular cutters have fewer teeth and less wear, therefore with an annular cutter holes can be made at higher or faster cutting speed and a faster feed rate of the drilling machine.
Energy savings:Because annular cutters do not have to drill/cut through the complete work piece, they require less thrust and thus less energy to drill through material.
More finishing:The hole made using an annular cutter is more finished, precise and accurate.
Easy Using:Due to the unique geometry of the annular cutters, making holes at awkward angles is also very easy.
Re-sharpening:can be easily re-sharpened on a grinding machine and can be re-used for drilling. Re-grinding can be done until the desired cutting length is available on the annular cutter.
Quick‐Start Guide – Get to Work in Minutes
Mount – Insert the shank into your magnetic drill's chuck. Align the two flat faces with the set‐screws and tighten with a hex wrench.
Position – Mark your hole center on the workpiece. Use the pilot pin to align the cutter precisely over the mark.
Activate magnet – Switch on the magnetic base. Confirm the green indicator light is on (minimum workpiece thickness recommended: ≥8mm / 5/16").
Start drilling – Turn on coolant. Begin with a slow feed for the first 1‐2mm, then advance at a steady, moderate rate. Do not force – let the cutter do the work for longest life.
Remove slug – After completing the hole, tap the pilot pin lightly to eject the slug from the Pro Tip : When drilling steel, always use adequate cutting fluid. Heat is the #1 enemy of HSS tooling – keep it cool and it will keep cutting.
Compatible Magnetic Drills – Industry Standard Fit
Trust Signals:
Material Certification: HSS cobalt steel. Batch traceability available.
Re-Sharpenable: When worn, re-grind on a standard tool grinder—one cutter delivers the life of three
Quality Commitment: Precision-ground edges. Every cutter inspected before shipment.
What's in the Box
3/8′′×2′′ HSS Annular Cutter × 1
Pilot Pin × 1
One 3/8′′ Hole, One Pass, Zero Burrs—Get Back to Work Faster
The OSCARBIDE 3/8′′×2′′ annular cutter changes the math. The thin-wall design cuts only the circumference of the hole—the center material drops out as a slug. That means less cutting resistance, faster feed, and a clean, burr-free hole in one pass.
How to Get the Best Results
Always use cutting fluid —prevents heat buildup and extends tool life
Secure the workpiece firmly —annular cutting generates high torque -7
Don't force the feed —let the cutter do the work
Remove the slug after each hole —clears the way for the next cut
Guaranteed Universal Compatibility – Mount It and Go
No guesswork. No returns because it doesn't fit. The OSCARBIDE annular cutter uses the industry‐standard 3/4" Weldon shank with two flat faces, ensuring a secure, slip‐free fit with virtually all magnetic drills and machine tools on the market.
Real‐World Applications:
Structural Steel Fabrication – beams, columns, base plates
Shipbuilding – hull plates, piping penetrations
Rail & Transit – rail tracks, rolling‐stock components
Aerospace – precision structural parts
Bridge Engineering – on‐site heavy structural drilling
Built to Last – HSS Durability + Re‐Sharpenability Saves You Money
A good cutter isn't just bought – it's used. OSCARBIDE is manufactured from premium high‐speed steel with a red hardness of up to 650°C, maintaining cutting edge integrity even under high‐temperature, high‐speed operation.
Extended tool life – HSS combines toughness and wear resistance, ideal for shock and vibration‐prone jobs
Cost‐effective – when dull, simply regrind and reuse; no need to replace after every few holes
Slug recycling – annular cutting produces clean, solid cylindrical slugs that can be collected and recycled as scrap metal
Applicable Material Rating and Equipment
Questions & Answers
Q1: Will this annular cutter fit my magnetic drill press? A: Yes – if your magnetic drill press accepts 3/4′′ Weldon shank tooling with 2 flats . This fits most brands including Hougen, Nitto Kohki, Euroboor, Fein, DeWalt, Milwaukee, and generic shop brands. Not for handheld drills.
Q2: What are the exact dimensions? A: Cutting diameter: 3/8′′ . Depth of cut: 2′′ . Shank: 3/4′′ Weldon with 2 flats.
Q3: Can I use this on a standard drill press or handheld drill? A: No. Annular cutters are designed for magnetic drill presses only – they require the specific low RPM, high torque, and coolant delivery of a mag drill. Using them on other machines will result in poor performance and potential breakage.
Q4: What materials can I drill? A: Mild steel, structural steel, stainless steel (with proper oil), cast iron, aluminum, copper, brass, plastic. Not for hardened steel or abrasive composites.
Q5: What lubricant should I use? A: Cutting oil – NOT coolant . Apply through the arbor slots with the magnet ON and motor OFF. Water-based coolants cause thermal shock and reduce HSS tool life.
Q6: How do I remove the slug after drilling? A: Remove the cutter from the drill, then use a standard punch or an ejector pin (sold separately) inserted from the shank end to push out the slug. The cutter does not include an ejector.
Q7: How long does the cutter last? Can it be resharpened? A: Life depends on material and use – typically 500+ holes in mild steel, 200+ in stainless. Yes, it is re-sharpenable. grind on a grinding machine until the cutting length is reduced.
Q8: How much faster is this than a twist drill? A: Annular cutters can drill holes up to ten times faster than regular drill bits. The thin-walled, dual-alternating-tooth design provides efficient and aggressive cutting.
Q9: My holes are rough or oversized – what could be wrong? A: Check: insufficient cutting oil, dull teeth, incorrect speed, loose shank, or debris in the cutter. Also ensure you used a center punch for proper positioning.
Q10: Does it come with a storage case? A: No. It comes as a single cutter. Store in a protective sleeve or tool box to protect the teeth.
Q11: Is this compatible with Hougen mag drills? A: Yes – Hougen uses the standard 3/4′′ Weldon shank with 2 flats, so it fits directly.
Product details
Specifications
| Main Specification | |
|---|---|
| Surface Recommendation | Metal, Plastic, Glass, Iron, Stainless Steel, Pine, Aluminum, Copper, Engineered Wood, Acrylonitrile Butadiene Styrene, Brass, Cast Iron, Nylon, Polyvinyl Chloride |
| Included Components | 1x Annular Cutter, 1x Pilot Pin |
| Manufacturer | OSCARBIDE TOOlS |
| Unit Count | 1 Count |
| Cutting Diameter | 0.38 Inches |
| Point Style | Annular |
| Shank Type | Weldon |
| Tool Flute Type | Spiral |
| Brand | OSCARBIDE |
| UPC | 727370853509 |
| Number of Pieces | 1 |
| Product information | |
|---|---|
| Number of Packs | 1 |
| Technical Details | |
|---|---|
| Part Number | 1 |
| Model | 3/8x2 |
| Material Type | High Speed Steel (HSS) |
| Number of Flutes | 2 |
| Others | |
|---|---|
| Product Type | Annular Cutters |
| Item Highlight | 2 Flat Shank | 3/8"Cutting Diameter | 2"Cutting Depth | Burr-Free Holes | Rapid Chip Removal | Precision Ground Edges |
| Minimum Bore Diameter | 0.38 inches |
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