FREE Delivery
Australian Owned
Spend DISCOUNTS
18mm x 152mm Reduced Shank HSS Black Oxide Jobber Drill Bit Alpha 9LM180R
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| Price for each item | Subtotal | % savings | ||
| Buy 1 | Buy 1 | $70.00 each | $70.00 | - |
| Buy 2 + | Buy 2 - 4 | $63.00 each | $126.00 | 10.00% |
| Buy 5 + | Buy 5 - 9 | $59.00 each | $295.00 | 6.35% |
| Buy 10 + | Buy 10 + | $56.00 each | $560.00 | 5.08% |
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In Stock
Other Sizes in Range
Delivery Information
Orders under $30 (Bulky items sent as parcel for FREE)
- Aust Post UNTRACKED Letter – FREE
- Parcel – From $8
- Express – From $10
- Click and Collect – 2hrs
Orders over $30
- Parcel – FREE
- Express – From $10
- Click and Collect – 2hrs
5% Off
10% Off
15% Off
| System of Measurement | Metric |
|---|---|
| Product | Reduced Shank Drill Bit |
| Size | M18 (18mm) |
| Material | M2 High Speed Steel |
| Coating | Black Oxide / Bright Silver |
| Length (l) | 152mm |
| Flute Length (fl) | 86mm |
| Drill Chuck Size | 12.7mm |
| Suitable For | Steel, Wood, Plastic and Stainless Steel |
| Point | 118 deg. Split Point |
| Closest size in fraction | 45/64" |
| Packaging | Carded |
| Brand | Alpha |
Dimensional data is a guide only. Tolerance differences exist between brands and batches
About Reduced Shank Drill Bits
Reduced Shank drill bits have a drilling diameter larger than the shank, so a hole >13mm can be drilled from a standard 13mm chuck without upgrading to an industrial drill. BNA stocks 13mm-18.5mm diameters in 0.5mm steps, Gold Series HSS and HSS Black Oxide. Common on workshop drill presses and 13mm cordless drivers.
Recommended use General steel, alloy, brass, aluminium and timber drilling. Most cost-effective option for everyday workshop and site work. Holds an edge for hundreds of holes in mild steel when used with cutting fluid.
Frequently Asked Questions
The full 13mm-25mm cutting head sits on a 13mm shank, so a standard cordless or workshop drill can drive a bit that would otherwise need an industrial drill press. The trade-off is a bit more flex under load, so run slower and use firm pressure.
Quick pick for Reduced Shank Drill Bits (what BNA stocks):
| If you are drilling | Pick | Why |
|---|---|---|
| Steel, wood, plastic, light stainless - everyday drilling | Alpha Gold | BNA's everyday production-grade Alpha Gold range. TiN coating lifts edge life roughly 30 percent over plain HSS. Best for steel, wood, plastic and light stainless work. |
| Value-grade general drilling | Bristol or black oxide drill bits | Value-grade production twist drills covering Bristol (uncoated / bright finish) and black oxide finishes. Reliable everyday choice when the production-grade premium isn't required. |
Tighten the chuck on the shank, not on the flute. If the chuck slips under load, the shank is sliding. Re-tighten harder or wipe oil off the shank. Bench drills, cordless drivers and impact drivers all accept standard twist drills.
Rule of thumb: 1mm-3mm bits at 2000-3000 RPM; 4mm-8mm at 1000-2000 RPM; 10mm-13mm at 500-1000 RPM; over 13mm under 500 RPM. Use a light machine oil, kerosene or proper cutting fluid on steel. Aluminium can be drilled dry but a few drops of WD-40 cuts cleaner. Cast iron drills dry. Stainless absolutely needs fluid.
Drill a pilot 25-50% of the final diameter first. For example, drilling a 13mm hole, start with a 6mm pilot. Without one, the chisel edge of the drill grinds rather than cuts, the bit walks, and the tip can burn. The pilot also lets the final bit centre on the existing hole without skating.
Most users have moved to disposable bits because sharpening by hand needs practice. A sharpener jig (Drill Doctor or similar) holds the geometry consistently. If you sharpen by hand, keep the original lip angle and equalise the two cutting edges. An uneven sharpen drills an oversize hole.
On site, a Step Tip Drill Bit eliminates the walk by self-centring on the work without a punch-mark. On the bench, a centre punch dot gives the drill chisel-edge something to bite into.
Material & Coating
HSS M2 high-speed steel (HSS). The everyday cutting-tool steel for drill bits. Hardness approximately 800 to 900 HV with an operating temperature range up to ~600 degrees C before the cutting edge anneals.
Important Use cutting fluid (light machine oil, kerosene or proper cutting compound) on steel and stainless to keep the cutting edge cool. Without fluid, temperature rises into the annealing range and the edge dulls quickly. Aluminium can be drilled dry; cast iron drills dry.
Resources
For full technical data including key product information, range and a CAD drawing, see our Technical PDFs library.
Convert between metric and imperial sizes, gauge to mm, decimal to fraction and TPI to pitch with our measurement conversion calculators.
Not sure what 1/4" is in mm (or vice versa)? See our metric to imperial chart for the conversion every drill-bit size customers ask about.
About the Brand
Alpha · Sheffield Group · Australian
Alpha is the Sheffield Group's premium drilling, cutting and fastening brand. Australian-owned, Sheffield has supplied industrial and trade markets since 1957 and is one of the country's largest distributors of cutting tools and accessories.
Range: The Alpha range covers Gold Series HSS jobber drill bits, HSS Cobalt drill bits, Bi-Metal Cobalt holesaws, TurboBORE spade bits, heavy-duty timber augers, SDS Plus masonry bits, countersinks, ONSITE+ impact-rated step-tip drill bits, and the ThunderMax range of impact-driven accessories.
Positioning: Premium-quality, production-grade tools at trade pricing. Same-day dispatch from BNA Brisbane.
Pricing & Delivery
Includes GST, a Tax Invoice and Free Standard Delivery anywhere in Australia.
Buy with Confidence
15+ years selling online · 25,000+ stock lines · 200 million pieces ex-stock in Brisbane QLD.
Excellent on REVIEWS.ioTrusted by DIYers, tradespeople, builders, manufacturers, government, councils and engineers across Australia · Read reviewsDisclaimer
Technical data Researched and compiled from numerous industry sources for the sole purpose of providing basic information. All material is advisory only and its use by anyone is entirely voluntary. Reliance on it for any purpose by anyone is at the sole risk of that person, and Bolt and Nut Australia is not responsible for any loss, claim or damages arising therefrom. In developing this information, Bolt and Nut Australia has made a determined effort to present it accurately.
Measurements Sizes are taken from supplier catalogues or hand-measured and should be used as a guide. Minor variation between batches is normal. We only stock Alpha for this product; substituting another brand is rare and would always be confirmed with you first.
Product Photos & PDF Data Sheets Represent the product type, not exact size. PDFs are a reference guide only. Specifications may change without notice.
If you see any problems with any of our specifications or you require additional information please contact us.
Delivery
Weigh less than 500grams
Exceptions: Tools, Kits, Bulky items = Sent as a parcel with tracking
Small orders that fit into the slot of your Letterbox are sent:
FREE with Aust Post Letter delivery with NO TRACKING and delivery between 4-12 business days
Or
Select a Quicker delivery service
- $7.00 Parcel Delivery 2-7 business days
- From $12.00 Express Delivery 1-4 business days
- From $14.00 StarTrack PREMIUM Express Delivery 1-3 business days
Or
Click & Collect - Warehouse pickup
Unit 9, 93 Rivergate Place, Murarrie, QLDPlace your order online and we will have it ready within 2 hours. Call if required sooner
Pickup times between 8am - 4pm, Monday - Friday
Weigh more than 500grams
Included is orders under $30 but weigh more than 500grams or wont fit in the slot of your letterbox
Including Large and Bulky heavy orders are sent:
FREE as a Parcel Delivery WITH TRACKING and delivery between 2-7 business days
Or
Select an Express delivery service
- From $12.00 Express Delivery 1-4 business days
- From $14.00 StarTrack PREMIUM Express Delivery 1-3 business days
Or
Click & Collect - Warehouse pickup
Unit 9, 93 Rivergate Place, Murarrie, QLDPlace your order online and we will have it ready within 2 hours. Call if required sooner
Pickup times between 8am - 4pm, Monday - Friday
Further delivery information can be found on our Delivery page
Supplier Details
| MPN | 9LM180R |
| UPC | 9342386011159 |
