This self-tapping screw is carburized and hardened, and we induction-harden only the tip. Stable self-tapping is possible even on high-strength materials such as “Hi-Ten 150” and stainless steel plates.
NITTOSEIKO CO., LTD.
Nittoseiko KATAX R-CI Specially Treated Screws

Manufacturer: NITTOSEIKO CO., LTD.
Model: KATAX R-CI
Features

Main uses
The tip is hard, allowing self-tapping on high-tensile materials .
We reduce the risk of delayed fracture to the same level as carburized and hardened screws.
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