Thread Forming & Thread Cutting Screws
Thread Forming (or Thread Rolling) Screws form mating threads in the material into which they are driven by displacing that material so that it flows around the screw threads, creating a zero clearance fit. Because of this exceptionally tight fit, lockwashers or other locking elements are generally not needed to prevent loosening. They are used in both metal and plastic applications, and the screws are available either blunt-tipped, lead point or pierce point. The most common type of Thread Forming Screws are those with a Trilobular™ cross-sectional thread form, significantly reducing the friction between the screw and the mating material during the thread-forming process.
Benefits of Thread Forming Screws
- Taptite® Thread Forming Screws are designed for metal applications and roll-form their own work-hardened machine screw threads, providing excellent resistance to vibrational loosening.
- Plastite® Thread Forming Screws are ideal for plastic applications as the pronounced, widely-spaced threads allow for deeper thread engagement in the plastic, resulting in enhanced holding capability.
- Hi-Low Thread Forming Screws offer another option for plastic applications. The reduced minor diameter coupled with the double-lead high and low thread profile minimizes material displacement while providing exceptional positive engagement of the mated material.
Benefits of Thread Cutting ScrewsThread Cutting Screws are similar to Thread Forming Screws in that they create their own threads in the mated material, however they do so by cutting away and removing the material into which they are driven. Because of the cutting action of the threads, low torque is needed to drive these screws. They are available in a variety of thread points, with Type F, Type 1, Type 17, Type 23 and Type 25 being the most common.
Call Empire Bolt & Screw or send us a Request for Quote on your Thread Forming and Thread Cutting Screw needs today.