Discuss this Gallery 2

on Feb 1, 2016

informative

on Feb 2, 2016

Thread forming (TF) and rolling (TR) are virtually the same thing. The difference is how the material is displaced when screwing in. IFI has only one TF screw. It is type C and is no longer recommended. You might want to rethink your third paragraph too. It says 3 but you only list 2. Repeating 1 twice doesn't count.

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