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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Description Price Thread Size Pitch Outside Diameter Thickness Material Left Hand Thread
RS庫存編號 264-0032
BrandRS PRO
HK$171.14
單位
M16 - 42mm - - -
RS庫存編號 508-9531
製造零件編號04415
BrandEXACT
HK$167.82
單位
1/2-20 UNF - 38mm 10mm HSS -
RS庫存編號 668-0740
BrandRS PRO
HK$123.09
單位
3/8-24 UNF - 25.4mm 9mm HSS -
RS庫存編號 509-0115
製造零件編號04311
BrandEXACT
HK$118.28
單位
5/16-18 - 25mm 9mm HSS -
RS庫存編號 215-631
BrandRS PRO
HK$120.46
單位
M7 1mm 13/16in - - -
RS庫存編號 508-9547
製造零件編號04412
BrandEXACT
HK$118.28
單位
5/16-24 - 25mm 9mm HSS -
RS庫存編號 215-669
BrandRS PRO
HK$98.26
單位
M2.5 0.45mm 13/16in - - -
RS庫存編號 215-760
BrandRS PRO
HK$73.56
單位
M4 0.5mm 13/16in - HSS -
RS庫存編號 508-9317
製造零件編號70417
BrandEVENTUS
HK$51.94
單位
M8 1.25mm 25mm 9mm HSS -
RS庫存編號 509-0165
製造零件編號04310
BrandEXACT
HK$106.62
單位
1/4-20 - 20mm 7mm HSS -
RS庫存編號 215-732
BrandRS PRO
HK$236.90
單位
M12 1mm 1.31in - HSS -
RS庫存編號 668-0766
BrandRS PRO
HK$308.88
單位
M12 1.75mm 33.33mm 11.11mm HSS Yes
RS庫存編號 509-0121
製造零件編號04314
BrandEXACT
HK$168.85
單位
1/2-13 - 38mm 14mm HSS -
RS庫存編號 215-681
BrandRS PRO
HK$51.00
單位
M3 0.5mm 13/16in - - -
RS庫存編號 509-0070
製造零件編號70415
BrandEVENTUS
HK$51.94
單位
M10 1.5mm 25mm 9mm HSS -
RS庫存編號 508-9402
製造零件編號70411
BrandEVENTUS
HK$51.94
單位
M3 0.5mm 25mm 9mm HSS -
RS庫存編號 668-0738
BrandRS PRO
HK$121.38
單位
M12 1.75mm 25mm 9mm HSS -
RS庫存編號 509-0064
製造零件編號70416
BrandEVENTUS
HK$51.94
單位
M12 1.75mm 25mm 9mm HSS -
RS庫存編號 668-0734
BrandRS PRO
HK$140.14
單位
M10 1.5mm 25mm 9mm HSS -
RS庫存編號 215-776
BrandRS PRO
HK$101.82
單位
M3 0.35mm 13/16in - HSS -