Trimming Dies

Trimming Dies

Trimming Dies2023-07-07T01:10:27+00:00
  • trimming dies

Trimming die is used to form the head of bolt and screw. In the case of cold heading bolts on automatic machines hexagonal, square and close to them heads are usually made out by trimming a barrel-shaped set of metal. The technological operation of obtaining the head is carried out in a trimming die, traditionally located in a block of punches, through which the metal set for the head is pushed by a trimming punch with a pusher. Cutting dies are highly loaded parts of tooling and their consumption in mass production of bolts is very high.

Our company can provide various types of hexagon trimming die, square trimming die, and other special trimming dies. Welcome to send us the inquiries with product drawings.

the trimming drawing

Workpiece size Outer dimension Cross section Workpiece size Outer dimension Cross section
M5 30 20 7.8 0.05 M16 60 40 23.75 0.1
M6 30 20 9.8 0.05 M18 60 40 26.75 0.1
1/4UNC 30 20 10.92 0.05 M20 60 40 29.75 0.1
5/16UNC 35 23 12.45 0.07 5/8UNC 64 32 23.5 0.1
M8 35 23 12.75 0.07 M16 64 32 23.75 0.1
3/8UNC 35 23 14.05 0.07 M18 64 32 26.75 0.1
7/16UNC 42 23 15.6 0.07 M20 64 32 29.75 0.1
M10 42 23 16.75 0.07 A325 4/3 64 32 30.9 0.1
M12 45 28 18.7 0.1 M20 74 40 29.75 0.1
1/2UNC 45 28 18.75 0.1 A325 4/3 74 40 30.9 0.1
M14 45 28 21.75 0.1 7/8UNC 89 40 32.8 0.12
5/8UNC 59 32 23.5 0.1 A325 7/8 89 40 35.6 0.12
M16 59 32 23.75 0.1 M24 89 40 35.75 0.12
M18 59 32 26.75 0.1 1″UNC 89 40 37.5 0.12
5/8UNC 60 40 23.5 0.1 A325 1″ 89 40 40.4 0.12
Cold forming trimming die is a stamping die that uses a stamping die to trim the edges of a component, giving it a certain height, diameter, and shape. The trimming die is mainly used to trim the edges of deep drawn parts, making the end face flat and beautiful, making it easy for the next assembly step. Edge cutting molds are widely used in fields such as mechanical manufacturing, automotive parts production, beverage bottle processing, and fastener mold matching.


  • According to the complexity of the parts, multiple trimming operations can be performed during the cold heading process: trimming the hexagon on the bolt head and trimming the bolt head flange.
  • From the perspective of manufacturing method selection, the trimming die is a component with inclined planes and axial cavities through holes. They are installed in the vehicle body without interference, so they can be quickly replaced.
  • The cutting die is made according to the personal requirements of the customer.
  • Long service life of cutting molds helps to save production.
What Is Trimming Dies?2023-07-01T03:20:21+00:00

Trimming dies are specialized tools used in the cold heading process to trim excess material from a formed metal part, typically a fastener such as a screw or bolt. After the initial forming process, the part may have excess material or flash that needs to be removed to achieve the desired shape and size. Trimming dies are designed to remove this excess material from the part by cutting it away with precision and accuracy.

Trimming dies are typically made from high-strength tool steel or tungsten carbide and are custom-designed to meet the specific requirements of the part being trimmed. They are often used in conjunction with other cold heading dies, such as heading punches and extrusion punches, to produce a finished product that meets the required specifications for size, shape, and thread profile.

The process of using trimming dies involves inserting the part into the cold heading machine and positioning it under the trimming die. The trimming die is then brought down onto the part, cutting away any excess material or flash. This process is repeated until the part is trimmed to the desired shape and size.

Trimming dies play a crucial role in the cold heading process, enabling the production of high-quality, precision-engineered metal parts. They are essential tools in the manufacturing of fasteners and other metal components for various industrial applications.


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