Tap & Die Sets

About Tap & Die Sets

Tap and die sets are essential threading tools used to create or repair internal and external threads on metal components. A tap cuts internal threads inside holes, whilst a die creates external threads on rods, bolts and pipes. MyToolShed.co.uk stocks a comprehensive range of tap and die sets from trusted brands including Sealey, Draper, Dormer and Facom, suitable for both professional engineering workshops and home DIY projects.

Available in metric and imperial sizes, these sets typically include taper, second and plug taps alongside corresponding dies, housed in organised storage cases. From compact 6-piece tap sets for basic maintenance to professional 42-piece kits for extensive thread cutting work, MyToolShed offers threading solutions for every application. Many sets include matching drill bits to ensure correct pilot hole sizing for accurate thread formation.

Applications

Tap and die sets are invaluable across numerous trades and industries:

• Automotive mechanics - repairing damaged threads in engine blocks, gearboxes and chassis components
• Plumbers and heating engineers - threading pipes and creating custom fittings
• General engineers and machinists - manufacturing components and maintaining industrial equipment
• Maintenance technicians - restoring stripped threads in machinery and fixtures
• Manufacturing facilities - production line thread cutting operations
• DIY enthusiasts - home repairs, restoration projects and custom fabrication work
• Agricultural engineers - maintaining and repairing farm machinery

Choosing The Right Tap & Die Sets

When selecting tap and die sets from MyToolShed.co.uk, consider these key factors:

Thread Standard: Determine whether you require metric (M6-M20 common) or imperial (UNF/UNC) threading. Many UK applications now use metric exclusively, though older equipment may need imperial sizes.

Material and Quality: High-speed steel (HSS) taps offer excellent durability for regular use. Premium sets from Dormer feature spiral point and spiral flute designs that improve chip clearance and reduce tap breakage in demanding applications.

Set Size: Smaller 10-15 piece sets suit occasional use and basic repairs, whilst comprehensive 37-42 piece collections provide complete size coverage for professional workshops. Consider which thread sizes you use most frequently.

Included Accessories: Sets with matching drill bits simplify pilot hole preparation. Look for kits that include tap wrenches, die stocks and thread pitch gauges for complete threading capability.

Storage: Durable storage cases protect taps and dies from damage whilst keeping sizes organised for quick identification.

Frequently Asked Questions

What's the difference between taper, second and plug taps?

Taper taps have a gradual lead for starting threads easily in through-holes. Second taps have a shorter lead for extending threads, whilst plug taps have minimal taper for threading closer to blind hole bottoms. Most applications start with a taper tap and finish with a plug tap for best results.

Can I use taps and dies on aluminium and stainless steel?

Yes, HSS taps and dies can cut threads in aluminium, mild steel and stainless steel. Use appropriate cutting fluid - soluble oil for steel, paraffin for aluminium. Work slowly with stainless steel as it work-hardens. For extensive stainless steel work, consider specialist taps designed for harder materials.

How do I prevent taps from breaking?

Ensure correct pilot hole size using the recommended drill bit. Apply cutting fluid liberally and turn the tap a quarter turn forward, then reverse slightly to break chips. Never force a tap - if resistance increases, reverse completely to clear chips before continuing.