Spin-Pull Tools for Rivet Nuts | Sherex by PEM Pneumatic Tools
Spin-Pull Tools for Rivet Nut Installation
Sherex® by PEM® spin-pull tools hydro-pneumatic installation systems designed to deliver fast, precise, and consistent rivet nut installation for medium to high-volume production environments. The spin-pull action combines rotation to engage the mandrel thread with a controlled pulling stroke to set the rivet nut, ensuring accurate installation force and repeatable results across every cycle.
Sherex by PEM's spin-pull tooling includes the FLEX-5, FLEX-18, and RIV943, each suited to install rivet nuts and rivet nut studs with varying thread sizes and force.
Tool Range
- FLEX-5 Spin-Pull Tool – compact pneumatic tool for medium-to-high volume production for M3-M8 rivet nuts, 22 kN of pulling force
- RIV943 Spin-Pull Tool – compact spin-pull installation tool for medium-to-high volume production for M4-M12 rivet nuts. 33kN of pulling force
- FLEX-18 Spin-Pull Tool – hydro-pneumatic tool for installing large size rivet nuts, 80 kN of pulling force
- FLEX-5 and FLEX-18 Process Monitoring – Process monitoring capabilities with both the FLEX-5 and FLEX-18 for precise installations, ensuring perfect installations


Key Features
- Hydro-pneumatic drive for fast, controlled installation
- Adjustable pull force for different rivet nut sizes and materials
- Consistent installation stroke reduces variation and rejects
- Ergonomic tool design for operator comfort in continuous use
- Quick-change nosepiece and mandrel system for fast size changeover
- Compatible with calibration units for regular tool verification
Process Monitoring Capability
The FLEX-5 and FLEX-18 installation tools have the ability to incorporate process monitoring to verify installation force and displacement in real time. This enables 100% installation verification without manual inspection, supporting compliance with quality management requirements in automotive and other regulated industries.
