Japanese Yamashina Releases New High Strength Aluminum Tapping Screw

Yamashina Corporation, the Japanese industrial screw maker, rolled out its new high strength aluminum tapping screw that can tap a wide range of materials including soft resin as well as hard engineered plastic with 50% PPS or glass fiber.

Common tapping screws available on the market have to tap the target object on condition that the pilot hole on the object has no female threads. This will save total costs by eliminating the need for pre-drilling, improve connectivity between the screw and target object, and create frictional resistance to allow for buffer time in case of axial force decrease. As for common aluminum screws, they are light and softer than iron, so they may deform fail to fasten when used as a tapping screw. They cannot be used especially with hard engineered plastic with 50% PPS or glass fiber.

Yamashina's new aluminum tapping screw utilizes self-developed thread shape and patented special anodic oxidation processing technology and therefore can apply to soft resin as well as hard engineered plastic with 50% PPS or glass fiber. Its advantages are:

1. Reduced cost. Preventing screw fall-out.

2. Thermal expansion rate close to iron screws, preventing screw fall-out caused by thermal change.

3. Aluminum composition does not affect magnetic lines of force. Recyclable. Apllicable to cars, machines, and medical equipment.

4. Asymmetric and acute-angle thread design makes tapping easier. The threads will not be harmed by the force applied on the flank of the bearing surface.