PROFESSIONAL REFERENCE CENTRE

Choose the right tool before you order

Practical guides, reference charts and selection advice to confirm dimensions, materials and applications.

11 technical guides
THREADING Tap drill size guide for machine tapping Find the recommended drill diameter before tapping and reduce the risk of damaged or weak threads. Open guide THREADING Metric tap diameter and pitch guide Quickly compare metric diameters, thread pitches and their corresponding tap-drill selections. Open guide EXTRACTION Left-hand tools for broken fasteners Learn when a left-hand drill can help and how to prepare for a cleaner fastener-removal job. Open guide EXTRACTION Screw extractor buying guide Choose the appropriate extractor style and size for the fastener, available access and break condition. Open guide DRILLING HSS vs cobalt drill bits for steel Compare heat resistance, tool life and the best applications for each drill-bit material. Open guide MAG DRILLING How to choose an annular cutter Confirm cutting depth, diameter, geometry and magnetic-drill compatibility before ordering. Open guide MAG DRILLING Magnetic drill parts buying guide Identify the components, accessories and replacement parts that fit your magnetic-drilling equipment. Open guide HOLE FINISHING Precision reamers buying guide Compare reamer styles for hole enlargement, alignment and accurate final sizing. Open guide TURNING Cutting tool bits for lathe work Select the tool material and geometry suited to common turning and profiling operations. Open guide FABRICATION Cutting tools for steel fabrication Explore the tool families used to drill, enlarge, countersink and prepare steel components. Open guide MASONRY Concrete and masonry tool-set guide Compare tool sets by work material, required diameter and jobsite application. Open guide

How to Drill Stainless Steel Without Work Hardening

Stainless steel rewards sharp tooling, controlled feed and effective heat management.

How to Drill Stainless Steel Without Work Hardening

Stainless steel rewards sharp tooling, controlled feed and effective heat management.

What Is a Screw Extractor?

A screw extractor removes damaged fasteners after a properly centered pilot hole is created.

What Is a Carbide Burr Used For?

A carbide burr is a rotary cutting tool used for deburring, shaping, blending and material removal.

What Is a Reamer Used For?

A reamer removes a small amount of material to improve hole size, roundness and finish after drilling.

What Is a Countersink?

A countersink creates a conical seat or breaks the edge around a drilled hole.

What Is a Counterbore?

A counterbore creates a flat-bottom recess for a fastener head or component.

HSS vs Carbide End Mills

HSS and carbide end mills offer different balances of toughness, speed, rigidity and tool life.

Spiral-Flute Taps Explained

Spiral-flute taps pull chips out of blind holes and can improve chip evacuation in deep internal threads.

Double-Cut vs Single-Cut Carbide Burs

Cut pattern changes how a carbide burr removes material, controls chips and finishes a surface.

Spiral-Point or Gun Taps Explained

Spiral-point taps drive chips forward and are commonly selected for through holes in machine tapping.

Spline-Shank Hammer Bits Explained

Spline-shank hammer bits fit compatible older-generation hammers and remain useful for demolition and concrete work.

SDS-Max Shank Explained

SDS-Max is a larger hammer-bit shank system intended for compatible heavier rotary hammers.

How to Maintain a Magnetic Drill Setup

Clean arbors, pilots, magnets and coolant systems improve reliability and reduce downtime.