Description
Sutton
Sutton 15.0mm HSS Reduced Shank Drill Bit
Part No: D1881500 | Barcode: 9311963007793 | Series: D188 Reduced Shank
The Sutton D1881500 is a 15.0mm HSS drill with the shank ground down to 12.5mm (1/2") so it fits a standard 13mm drill chuck — lets you drill larger diameter holes than the chuck would normally support, without needing a Morse taper machine. Designed for slow-speed, large-bore work where the cordless drill or pillar drill’s chuck capacity runs out.
15.0mm Cutting Diameter
12.5mm Shank
Fits 13mm Chuck
M2 HSS
118° Standard Point
Steam Tempered Blue
5xD Cut Depth
Suitable For
Mild Steel
Free-Cutting Steel
Cast Iron
Aluminium & Brass
Pillar Drill / Drill Press
Slow-Speed Hand Drilling
Key Features & Benefits
- 15.0mm cutting diameter on a 12.5mm shank — bridges the gap between standard chuck capacity (13mm) and Morse taper drilling. Lets you drill 14–30mm holes in a 13mm chuck without changing machines.
- Steam tempered blue finish — thin oxide layer increases lubricity in cutting fluid and reduces built-up edge in mild and free-cutting steels. Standard finish for general engineering drilling.
- 118° standard point — conventional general-purpose drill geometry. Easy to resharpen, forgiving in mild steel, and suitable for drilling at the slow speeds reduced-shank drills require.
- M2 high-speed steel — tough, heat-resistant tool steel that holds an edge through repeated drilling without backing off. Resharpens easily on a standard drill grinder.
- 5xD cut depth capacity — the flute length supports holes up to 5x the drill diameter, sufficient for through-drilling structural plate and bar stock at this size range.
- Designed for slow-speed drilling — sized for use in pillar drills, milling machines, and high-torque cordless drills running at 350 RPM or below. Don’t run at jobber-drill RPM — the larger diameter generates too much heat at high speed.
When to Use This Drill
The Sutton D1881500 (15.0mm reduced shank) is the right choice when the hole diameter exceeds your machine’s chuck capacity but you don’t have access to a Morse taper machine — common when fitting large fasteners, drilling clearance for through-bolts, or fabricating from sheet steel and plate. For drilling on a lathe or large mill, use a Morse taper shank drill from the D115 series instead; for everyday drilling under 13mm, use the parallel-shank D101 jobber range.
Pro Tip: Slow the drill speed right down for large diameters — for 15.0mm in mild steel, target 250–400 RPM with steady feed pressure and cutting fluid. Reduced-shank drills run at jobber speeds (1500+ RPM) burn up the cutting edge in seconds. If your drill press doesn’t have a low gear, this drill is best run in a milling machine or geared head pillar drill where you can drop to under 500 RPM. Heavy steady pressure with low RPM produces clean chips; light pressure at high RPM produces dust and burns the edge.
Authorised Sutton Dealer — Sutton Tools is an Australian-owned manufacturer (Thomastown, Victoria). This product is backed by full Sutton manufacturer warranty with local technical support — visit Sutton Tools for the full D188 reduced-shank range.
Product Specifications
| Part No. | Diameter |
|---|---|
| D1881349 | 17/32″ |
| D1881350 | 13.5mm |
| D1881400 | 14.0mm |
| D1881429 | 9/16″ |
| D1881450 | 14.5mm |
| D1881500 ★ | 15.0mm |
| D1881508 | 19/32″ |
| D1881588 | 5/8″ |
| D1881600 | 16.0mm |
| D1881650 | 16.5mm |
| D1881667 | 21/32″ |
| D1881700 | 17.0mm |
| D1881746 | 11/16″ |
| D1881800 | 18.0mm |
| D1881900 | 19.0mm |
| D1881905 | 3/4″ |
| D1881984 | 25/32″ |
| D1882000 | 20.0mm |
| D1882064 | 13/16″ |
| D1882143 | 27/32″ |
| D1882200 | 22.0mm |
| D1882223 | 7/8″ |
| D1882302 | 29/32″ |
| D1882381 | 15/16″ |
| D1882461 | 31/32″ |
| D1882500 | 25.0mm |
| D1882540 | 1″ |
| D1882600 | 26.0mm |
| D1882800 | 28.0mm |
| D1883000 | 30.0mm |
★ You are viewing the highlighted size. Other sizes in the D188 reduced-shank range are also available — click any part number above.
Browse our full range of drill bits at Alltools Geelong.
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