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Profiles for Thread Production

Insert profiles for thread production can be divided into three main types: full profile, partial profile, and multi-tooth.

Full Profile

Inserts belonging to this group are designed to produce a full profile of the requested thread. Each full profile thread tool is suitable for a specific thread profile and pitch only. Full profile tools are recommended for mass production.

Advantages of Full Profile

• Finish the thread in one operation.
• Bigger corner radius means better tool life.
• Ensures correct depth of thread.
• No deburring.

Disadvantages of Full Profile

• Cutting edge is suitable for the relevant
thread profile and pitch only.
• Requires a wider variety of items in the workshop.

Partial Profile

Inserts belonging to this group do not produce the outer diameter (major diameter) of external threads or the inner diameter (minor diameter) of internal threads, which means that one or more additional operations are needed to complete the thread diameter. These Inserts are not recommended for mass production.

Advantages of Partial Profile

• Small corner radius, suitable for many pitch sizes.
• Reduces stock of many different full profiled inserts.

Disadvantages of Partial Profile

• Small corner radius will result in shorter tool life..
• Requires additional operation/s to the complete the outer (major) or inner (minor) diameter, depending on the thread gender.

Multi-Tooth

Multi-tooth inserts produce a full profile of the requested thread. These inserts, usually have two or three cutting teeth. The thread profile is produced by the last tooth and the previous teeth (or tooth) are used for rough and semi-finish operations, thereby facilitating the work of the last tooth. These inserts are recommended for mass production.



Advantages of Multi-Tooth

• Finish the thread in one operation.
• Reduces the number of passes for high productivity – multi-tooth tools are similar to full profile tools but have more than one cutting point (two-pointed tools give double productivity, three-pointed tools give triple, etc.).
• Ensures longer tool life.
• Ensures correct depth of thread.
• No deburring.

Disadvantages of Multi-Tooth

• Can not work next to shoulder and requires wide thread relief.
• High cutting forces.
• Requires a larger variety of items in the workshop.

The ISCAR catalog of thread products contains all types of threading solutions