Hand tools for tapping and threading, the Hi-Spec Tap & Die Set promises clean, accurate cuts across common metric sizes. That reassurance helps a DIYer tackle seized bolts or cut fresh threads without second-guessing. Does the kit include the sizes and accessories needed for typical home and car repairs?
⚡ At a Glance
- • Cutting Quality: Clean cuts for internal and external threads, suitable for new cutting and rethreading
- • Best for: DIYers and small workshop users repairing nuts, bolts and spark plugs
- • Not ideal for: High-volume industrial production threading tasks
Metric coverage spans M3 to M12 plus an NPT 1/8-27 die, with 16 pitch options and a 16-blade screw pitch gauge. Tools are made from GCr15 alloy steel and supplied with three wrench handles and a slimline case.
Reliable Thread Cutting – thanks to GCr15 alloy steel
GCr15 is a high carbon chromium bearing steel with high Rockwell hardness, improved contact fatigue performance and corrosion resistance. The hardened alloy helps taps and dies retain cutting edges during repeated use on harder metals.
Sharper, tougher cutting edges reduce breakages and give consistent thread profiles, so repairs finish cleanly first time.
Versatile Size Coverage – with M3 to M12 taps and 16 pitch options
Set includes eight metric thread sizes from M3 to M12 and 16 pitch sizes, with an additional NPT 1/8-27 die for pipe threads. A mix of tapered and plugged taps addresses starting threads and through-threading.
Common household, automotive and workshop threads are covered, cutting down the need to buy extra specialised taps or dies.
Ready-to-use Workshop Kit – with wrenches, gauge and slimline case
Three adjustable tap and die wrench handles fit the taps and dies via steel alloy fittings, and a mini-screwdriver assists assembly. A 16-blade screw pitch gauge allows quick identification of existing threads and a slimline case keeps components organised.
Accessories and neat storage speed up jobs on-site and make the set simple to carry and store between uses.
✨ The 4 Key Reasons for Hi-Spec Tap & Die Set
- Comprehensive size range - Covers M3 to M12 and 16 pitch options for common repairs
- Includes NPT die - Adds 1/8-27 NPT for threadable pipe fittings convenience
- Durable GCr15 steel - Hardened alloy resists wear, extending tool life significantly
- Complete accessory set - Wrenches, screwdriver and gauge keep jobs organised on-site
📋 Technical Details at a Glance
- Category: Tap & Die Set
- Pieces: 40pc total
- Metric count: 34 metric-sized taps and dies included
- Tap sizes: M3 to M12
- Thread pitches: 16 pitch sizes
❓ Frequently Asked Questions
Q: What sizes are included in the set?
A: Metric taps and dies cover M3 to M12 with 16 pitch sizes, and the set also includes an NPT 1/8-27 die.
Q: Which materials can the tools be used on?
A: Tools are suitable for carbon alloy steels, cast iron, aluminium, brass and bronze, thanks to the GCr15 alloy steel construction.
Q: What accessories are supplied for use and storage?
A: Three adjustable wrench handles, a mini-screwdriver for assembly, a 16-blade screw pitch gauge and a slimline case are included for organisation and transport.
🏆 Our Verdict
Suitable for homeowners, DIYers and small workshops needing reliable thread repair and cutting. Broad metric coverage, premium GCr15 alloy construction and included wrenches and gauge deliver practical durability. Although cost varies, hardened tools and comprehensive sizing make the kit a sensible long-term workshop investment.
