Thread forming fasteners
Thread forming fasteners are widely known in the automotive industry. Its thread form system is universally acknowledged as a major advancement in fastening technology. These screws form their own counter thread in a drilled, casted or deep drawn hole without further preparation.
Nedschroef developed a thread forming fastener called Nedtite ES which can be used in both steel and aluminium. Furthermore, the screws have a high torsional strength, which is important as the fastener is both a tapping tool as well as a fastener. Also, the thread form of the Nedtite ES meets ISO-metric or unified thread standards, thus allowing a rolled thread machine screw to be substituted if need be. Nedtite ES screws have a low thread forming torque without compromising the material exploitation (in terms of maximum achievable preload).
The thread forming capability provides a continual rolling action, which assists grain-flow as the fastener is inserted in the hole, and thus the thread geometry is perfectly matched to that of the mating hole. As a result, the jointed assembly is stronger and more durable.
- Low thread forming torques
- Energy saver due to low torques
- Formed counter thread is also suitable for standard metric screws
- High clamp loads
- Vibration proof
- No cross-threading
- Better mating threads
- Applicable in steel and aluminium
- Reduction of in-place costs
- No need for tapping counter thread