Material is rolled upwards into thread die creating a thread diameter larger than the blank diameter. For a table showing common roll threading diameters click here.
Cost Savings
Using undersized wire saves material cost and freight. The rolling process is also much faster thereby saving labor expense.
Increased Strength
Rolled threads are stronger than cut threads due to mechanical work hardening and grain orientation.
Cut Thread
Cut threads begin with wire with the same diameter as the thread. Material is cut away leaving behind the thread shape.
