Dies

A high-quality, reliable threading tool is essential for workshops and industrial businesses that require threads measured to an exact metric thread size, which will give the pitch of the thread in millimetres (mm). At RS Components, we have thread dies made from both standard steel and high-speed steel (HSS) available, meaning there is a choice of material to best suit your requirements. Our available products cover a range of metric sizes and pitches.


What is a thread die and what are they used for?


Thread dies are special tools used in the manufacturing industry to create the threads on screws, bolts, nuts and other male fixing items. Over time, threads can become damaged and may need rethreading, which dies can also be used for. There are cavities to remove chips and debris as the thread is cut, however, it is recommended to use a chaser for cleaning debris from threads as dies will remove additional material each time they are used on a male thread. This will cause the locking of male and female portions to weaken.


In order to ensure proper alignment during threading, die stocks are often used to hold the die in place and ensure the threading is uniform. The diameter of a die stock can be adjusted slightly to allow for different sized round and hex dies and are tightened to fit the chosen die.


What types of thread die are there?


The external shape of the thread die can be round, square, hexagon or tubular and can be further classified as solid, split or separable. Round dies are the most common and, depending on their size, have three or more serrated cutting edges and geometrically represent the nut thread. There are also left-hand thread dies for applications in which a right-hand thread would cause the male portion to loosen, such as the left-hand pedal on a bicycle.


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Viewing 1 - 20 of 52 products
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Description Price Thread Size Pitch Outside Diameter Thickness Material Left Hand Thread
RS Stock No. 215-681
BrandRS PRO
kr 45,62
Each
Units
M3 0.5mm 13/16in - - -
RS Stock No. 264-0032
BrandRS PRO
kr 167,86
Each
Units
M16 1.5mm 42mm - - -
RS Stock No. 668-0731
BrandRS PRO
kr 52,16
Each
Units
M8 1.25mm 25mm 9mm HSS -
RS Stock No. 668-0734
BrandRS PRO
kr 52,16
Each
Units
M10 1.5mm 25mm 9mm HSS -
RS Stock No. 215-732
BrandRS PRO
kr 110,57
Each
Units
M12 1mm 1.31in - HSS -
RS Stock No. 668-0769
BrandRS PRO
kr 81,26
Each
Units
M8 1.25mm 33.33mm 11.11mm HSS Yes
RS Stock No. 668-0738
BrandRS PRO
kr 52,16
Each
Units
M12 1.75mm 25mm 9mm HSS -
RS Stock No. 215-811
BrandRS PRO
kr 78,28
Each
Units
M8 1mm 1in - HSS -
RS Stock No. 509-0115
Mfr. Part No.04311
BrandEXACT
kr 120,66
Each
Units
5/16-18 - 25mm 9mm HSS -
RS Stock No. 386-947
Mfr. Part No.70412
BrandEVENTUS
kr 53,10
Each
Units
M4 0.7mm 25mm 9mm HSS -
RS Stock No. 509-0064
Mfr. Part No.70416
BrandEVENTUS
kr 53,10
Each
Units
M12 1.75mm 25mm 9mm HSS -
RS Stock No. 215-805
BrandRS PRO
kr 55,41
Each
Units
M6 0.75mm 13/16in - HSS -
RS Stock No. 668-0740
BrandRS PRO
kr 52,16
Each
Units
3/8-24 UNF - 25.4mm 9mm HSS -
RS Stock No. 668-0747
BrandRS PRO
kr 52,16
Each
Units
1/4-28 UNF - 25.4mm 9mm HSS -
RS Stock No. 509-0121
Mfr. Part No.04314
BrandEXACT
kr 172,38
Each
Units
1/2-13 - 38mm 14mm HSS -
RS Stock No. 215-798
BrandRS PRO
kr 46,22
Each
Units
M6 0.5mm 13/16in - HSS -
RS Stock No. 668-0753
BrandRS PRO
kr 53,97
Each
Units
M4 0.7mm 20.63mm 6.35mm HSS Yes
RS Stock No. 215-748
BrandRS PRO
kr 146,71
Each
Units
M12 1.25mm 1.31in - HSS -
RS Stock No. 509-0193
Mfr. Part No.04411
BrandEXACT
kr 108,59
Each
Units
1/4-28 - 20mm 7mm HSS -
RS Stock No. 215-653
BrandRS PRO
kr 51,25
Each
Units
M2 0.4mm 13/16in - - -