Longer-Wearing Drills for Serious Metalwork

Repeated drilling through metal puts heat, friction & wear directly onto the cutting edge. Sutton Tools coated drill sets give fabricators, fitters, maintenance teams, machinists & Australian trades a practical selection of coated drill bits for demanding workshop & site drilling. Depending on the Sutton range, coating technologies can include TiN, TiAlN-tip or Futura Nano PVD treatments combined with HSS drill construction for specified metalworking applications.

Comparing complete sets? Browse  Drill Bit Sets for alternative drill-set options or  Drill Accessories for complementary drilling tooling.

What Are Sutton Tools Coated Drill Sets?

A coated drill bit set combines multiple drill diameters with a wear-resistant coating or surface treatment applied to the drill or cutting area.

Importantly, “coated” doesn't describe one universal Sutton drill technology.

Different Sutton ranges use different cutting-tool treatments according to their intended application.

Examples across Sutton's coated drilling families include:

► TiNite — M2 High Speed Steel with TiN coating
► Viper Plus — M2 HSS with a Futura Nano PVD-coated tip
► INOX — HSS drills with TiAlN-tip treatment for demanding applications including stainless steel
► Supabit Plus — coated drills using a 1/4" hex-shank format

This means a buyer shouldn't choose from coating colour alone. Drill family, workpiece material, diameter range, point geometry & drilling equipment all contribute to the correct selection.

Why Choose Sutton Coated Drill Bit Sets?

Coating is most useful when it solves an actual cutting problem.

For workshops regularly drilling metal, the right coated set can combine useful diameter coverage with increased resistance to cutting-edge wear.

Increased Wear Resistance

Sutton uses different coatings across selected drill families to improve cutting-tool performance under appropriate conditions.

For example, Sutton states its Viper Plus Futura Nano PVD-coated tip has exceeded twice the tool life of standard Viper drills under its testing conditions.

Sutton's TiNite range uses TiN coating to improve tool life compared with equivalent uncoated tooling under suitable applications.

Actual drill life still depends on the workpiece, diameter, cutting conditions, alignment & how the tool is used.

Useful Diameter Coverage in One Case

A professional drill set should contain sizes that correspond with the work actually reaching the bench.

Keeping multiple diameters together helps when moving between pilot holes, clearance holes, tapping preparation & general component drilling without sourcing each size individually.

Metal-Specific Options

Selected Sutton coated ranges are designed around materials including steel, stainless steel, aluminium, cast iron, brass & other specified metals.

That makes the drill family as important as the coating.

A general metal drill & a stainless-focused drill shouldn't automatically be considered interchangeable because both happen to have coated cutting surfaces.

Ready for the Wider Drilling Setup

Drill bits are only one part of the hole-making system.

Machine condition, chuck grip, workpiece security, speed, feed & alignment all affect what happens at the cutting edge.

For the equipment driving the tooling,  Drills provides the natural next step.

Common Applications for Coated Drill Sets

Fabrication & Metalworking

Fabricators frequently move between hole diameters across brackets, plates, frames, fabricated assemblies & repair components.

A well-chosen metric coated drill set keeps the common sizes organised while providing cutting-tool characteristics suited to the material.

Where drilling sits alongside cutting, edge preparation or material clean-up,  Metal Cutting & Grinding Tools extend the workflow into complementary metalworking operations.

Stainless Steel Drilling

Stainless steel deserves deliberate drill selection.

Rather than simply applying more pressure when progress slows, choose a Sutton drill family specified for the material & use suitable drilling conditions.

Sutton offers coated drill technologies with stainless-steel applications, including its INOX & Viper Plus families.

Machinery Maintenance & Repair

Industrial maintenance can involve drilling replacement brackets, guards, mounts & fabricated repair components without much warning.

Keeping multiple diameters together gives technicians more flexibility when the required hole size changes from one repair to the next.

For the wider reality of urgent equipment repair, Emergency Worksite Breakdown Support covers the challenge of keeping work moving when equipment failure interrupts operations.

General Engineering

Engineering workshops can move between steel, aluminium, brass & other suitable materials throughout the working day.

A coated drill set provides multiple diameters in one organised system while allowing the drill family itself to be selected around the predominant material & workload.

Pilot Holes & Thread Preparation

Drilling often comes immediately before another machining operation.

Where the hole will subsequently be tapped, correct drill diameter matters because the prepared hole directly affects the material the tap must remove or form.

 Tap & Die Sets provide a particularly strong complementary pathway for workshops moving from hole preparation → internal threading.

Product Selection Guide – Match the Drill Set to the Material

Don't buy the set simply because one coating acronym sounds more advanced.

Start with the material being drilled & the type of work being performed.

Start With the Workpiece Material

Steel, stainless steel & aluminium don't behave identically under a drill.

Identify the material first, then select the Sutton drill family specified for that application.

This is more reliable than buying from coating colour or assuming every coated HSS drill has the same capabilities.

TiN vs TiAlN – Which Should You Choose?

The practical answer depends on the complete drill rather than the coating acronym alone.

TiN is used by Sutton on coated HSS tooling such as its TiNite range.

TiAlN-tip technology appears on Sutton's INOX range, which is positioned towards demanding applications including stainless steel.

Other Sutton drills use Futura Nano PVD coating technology.

Instead of asking which coating is universally “best”, compare:

► Workpiece material
► Drill family
► Point geometry
► Required diameters
► Drilling frequency
► Machine or hand-held use
► Manufacturer-stated application

Choose Useful Size Coverage

More pieces don't automatically make a better set.

The right set contains the sizes your work repeatedly requires.

Current Sutton Viper Plus metric configurations include options such as a 19-piece 1.0–10.0mm set in 0.5mm rises & a 25-piece 1.0–13.0mm set in 0.5mm rises.

A workshop rarely drilling above 10mm may be adequately covered by the smaller range. A fabrication or engineering workshop regularly working across larger diameters may benefit from additional coverage.

Check Point Geometry

How a drill starts can affect accuracy before the flutes are fully engaged.

Sutton's Viper Plus range uses a 118° split point designed to minimise wandering when starting.

Don't assume every coated Sutton drill uses identical point geometry.

Before drilling,  Measuring & Layout Tools can help establish centre positions, dimensions & component layout.

Match the Shank to the Driving Tool

Conventional jobber drills & 1/4" hex-shank drills serve different equipment setups.

Check the drill format against the machine or driver being used before choosing the set.

A sophisticated coating doesn't solve a basic compatibility problem.

Coated vs Uncoated Drill Bits

A coated drill should earn its place through the application.

Occasional general-purpose drilling doesn't automatically require coated tooling.

Repeated metal drilling or work involving more demanding materials can make the characteristics of an appropriate coated drill family more valuable.

Expert Tips for Better Results With Coated Drill Bits

Identify the material before opening the drill case. Coating should support the application rather than determine it.

Work from the required diameter. For holes associated with fasteners, tapping or fitted components, use the specified hole size rather than the nearest convenient bit.

Establish the centre accurately. Cutting performance can't correct poor layout.

Secure the component properly. Movement compromises alignment & can load smaller drills unnecessarily. Clamps & Vises provide relevant workholding options for controlled workshop drilling.

Use suitable drilling conditions. Drill diameter, material & tool family all influence the operating setup.

Manage heat rather than fighting it with pressure. Excessive heat can work against cutting-tool life.

Watch chip formation. Changes in cutting behaviour can provide an early indication that the drill, setup or operating conditions need attention.

Don't keep forcing a worn edge. Rising thrust, heat or deteriorating hole quality deserves investigation before the next hole.

Return every drill to its marked position. An organised set makes damaged or missing diameters immediately obvious.

Treat small drills carefully. Smaller diameters can be less tolerant of poor alignment & side loading.

Remember the coating when sharpening. Regrinding a coated drill can remove the coating from newly sharpened cutting surfaces.

For a wider look at cutting-edge maintenance decisions, The Black Print: Blade Sharpening 101 Sharpen Or Replace explores the practical question of maintaining or replacing cutting equipment.