An air tapping arm, also known as a pneumatic tapping arm, is a versatile tool used in various industrial applications for creating threads in materials such as metal, plastic, and wood. The types of threads that can be created with an air tapping arm include:
1. **Metric Threads**: These are the most common thread types used globally, characterized by their pitch and diameter measured in millimeters. Air tapping arms can efficiently create metric threads, which are widely used in automotive, machinery, and construction industries.
2. **Unified Threads (UNC/UNF)**: Unified threads are standard in the United States and Canada. UNC (Unified Coarse) and UNF (Unified Fine) threads can be produced using air tapping arms, suitable for applications requiring specific thread tolerances and strengths.
3. **British Standard Threads (BSP/BSPT)**: BSP (British Standard Pipe) and BSPT (British Standard Pipe Tapered) threads are used primarily for pipe fittings. Air tapping arms can create these threads, which are essential in plumbing and hydraulic systems.
4. **Acme Threads**: Known for their trapezoidal thread profile, Acme threads are used in power transmission and heavy load applications. Air tapping arms can produce these threads, which are common in lead screws and industrial machinery.
5. **NPT Threads**: National Pipe Tapered threads are used for sealing pipes and fittings. Air tapping arms can create NPT threads, ensuring a tight seal in fluid and gas systems.
6. **Custom Threads**: Air tapping arms can be equipped with custom taps to create non-standard threads tailored to specific applications, offering flexibility in manufacturing processes.
7. **Helical Inserts (e.g., Heli-Coil)**: Air tapping arms can also be used to prepare holes for helical inserts, which are used to repair damaged threads or reinforce threaded holes in softer materials.
These capabilities make air tapping arms essential tools in manufacturing, repair, and maintenance operations across various industries.