RS PRO 54 Piece HSS M3 → M20 Thread Tap & Die Set

  • RS Stock No. 668-1129
  • Manufacturer RS PRO
Technical data sheets
Legislation and Compliance
RoHS Status: Not Applicable
COO (Country of Origin): CN
Product Details

RS PRO HSS Tap and Die Set

Introducing the range of RS PRO Tap and Die sets. This high-quality set features all the essential pieces of equipment and accessories needed to successfully clean or cut new threads on fasteners, holes and much more. The HSS (High-Speed Steel) material makes it easier to cut harder materials with precision and efficiency, so this set is ideal for the professional craftsman or general engineering and automotive applications.

Features and Benefits:

• This set from RS PRO is ideal for cleaning and repairing damaged or corroded threads
• The HSS construction of the pieces in the set allows for easy and clean cutting into metals, as well as durability and longer tool life
• This tools in this set offer a 3-stage tapping procedure (taper/starter, intermediate and bottoming)
• Each piece is labelled in the convenient case to allow for quick identification of the right parts and helps locate any missing pieces
• The tap wrench is adjustable to help fit different tap sizes while holding the tap securely and firmly
• The set also includes a screw pitch gauge to check and measure the thread created or to ensure the old thread is measured to select the correct thread size
• All the pieces in this set are neatly stored within a metal storage case for easy transportation and protection to ensure they do not rust or corrode


Tap and die sets are an essential kit to have available if a fastener or fastener hole is threaded and then rendered unusable. By using a tap and die kit, a new thread can be cut, or a damaged thread repaired, especially if it has threaded or has a lot of corrosion on it from years’ worth of build-up. A tap and die set generally consists of the tap and the die. The tap is designed for internal thread cutting, so this would be used on the fastener hole or a nut, whereas a die is used for the external thread, like on a bolt. Sets like these are most commonly used for:
• Automotive applications and repair
• General maintenance workshops
• Machinery repair

What is the difference between tapping and threading?

Tapping and threading are the processes that are used to produce screw threads. Tapping uses the tap part of the set and creates internal threads. Threading is the process used by the die to cut external threads.

Why choose a HSS Tap and Die Set?

By choosing a HSS tap and die set, you can be sure that you are selecting the most durable and hardy material to ensure you are achieving a quality result every time. HSS has a higher abrasion resistance and can also withstand higher temperatures without losing its durability and hardiness, making it ideal for continuous use. It also cuts faster when working with stubborn materials and lasts longer.

What sets are available in this RS PRO range?

668-1125 32-piece set, M3 to M12
668-1129 54-piece set, M3 to M20

Attribute Value
Maximum Die Size M20
Minimum Tap Size M3
Maximum Tap Size M20
Minimum Die Size M3
Number of Pieces 54
Set Contents Hand Taps: M3 to M20 (x33); Round Dies: M3 to M20 (x11); Die Holder: #1; #2; #3; #4; #5; #6 (x6); Tap Wrench: #1; #3 (x2); Pitch Gauge; Screwdriver
Material HSS
45 In stock for delivery within 2 working days
Unit of sale: 1 Set
(exc. VAT)
(inc. VAT)
1 +
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