Quick Answer
The NF-Series is a line of brushless electric clutch screwdrivers designed for precision assembly applications. Featuring a brushless motor, adjustable torque settings, and ESD-safe models, the NF-Series provides consistent fastening performance while helping manufacturers improve quality and reduce maintenance requirements.
Who This Is For
- Manufacturing engineers
- Process engineers
- Quality engineers
- Assembly operators
- Electronics manufacturers
- Medical device manufacturers
- Aerospace manufacturers
- Industrial assembly operations
When Should You Use This?
Use the NF-Series when:
- Fastening accuracy is important
- Precision torque control is required
- ESD protection is needed
- Low- to medium-torque applications are involved
- Long tool life is desired
- Operators require a lightweight, ergonomic fastening tool
- Consistent fastening performance is critical
When Should You NOT Use This?
The NF-Series may not be the best fit when:
- Torque traceability is required
- Fastening data collection is required
- Advanced process control is needed
- Torque and angle monitoring are required
For applications requiring traceability, process control, and fastening data collection, a transducerized smart tool system may be a better solution.
How the NF-Series Works
The NF-Series uses a clutch mechanism to control torque output. Once the preset torque value is reached, the clutch disengages to help improve fastening consistency and reduce the risk of over-tightening.
Depending on the model selected, the tool may feature:
- Lever start operation
- Push-to-start operation
- Adjustable torque settings
- Brushless motor technology
- ESD-safe protection
Result:
- Consistent fastening performance
- Reduced fastener damage
- Improved assembly quality
- Lower maintenance requirements
- Increased productivity
Core Features
- Brushless motor design
- Precision torque control
- Adjustable torque settings
- ESD-safe models available
- Ergonomic tool design
- Long service life
- Reduced maintenance requirements
- Available in multiple torque ranges
- Available in lever start and push-to-start configurations
- Compatible with Mountz fastening accessories
Configuration Options
Start Methods
The NF-Series is available in:
- Lever Start Models
- Push-to-Start Models
ESD-Safe Models
Select NF-Series models are ESD-safe and designed for assembly applications involving static-sensitive components.
Torque Range Selection
The NF-Series is available in multiple torque ranges to support a variety of fastening applications.
Refer to the NF-Series product page for complete model listings and specifications.
Understanding Brushless Electric Screwdrivers
What Is a Brushless Electric Screwdriver?
A brushless electric screwdriver uses a brushless motor design to provide fastening power while reducing wear and maintenance compared to traditional brush-type motors.
Why Use a Brushless Motor?
Brushless motors help provide:
- Longer service life
- Reduced maintenance
- Consistent performance
- Improved reliability
What Makes the NF-Series Different?
The NF-Series combines the following features to create a fastening platform designed for precision assembly applications:
- Brushless motor technology
- Precision torque control
- Adjustable torque settings
- ESD-safe protection
- Ergonomic tool design
Available Models
The NF-Series is available in multiple torque ranges and configurations to support a wide variety of precision assembly applications. Models are offered with lever start or push-to-start operation, as well as Standard, Plus, Soft Stop, and Time Angle Control & Auto Reverse configurations. All NF-Series screwdrivers feature a brushless motor, external torque adjustment, and ESD-safe construction.
Model Selection Guide
Need a screwdriver for lower torque precision assembly?
Choose:
- NF150-A ESD
- NF150P-A ESD
These models provide a torque range of 2.6–13 lbf.in (29.4–147 cN·m) and are well suited for electronics, medical devices, and precision assembly applications.
Need a general production screwdriver?
Choose:
- NF220-A ESD
- NF220P-A ESD
These models provide a torque range of 5.2–19 lbf.in (58.9–215.8 cN·m) and are commonly used for general manufacturing and production assembly.
Need higher torque capacity?
Choose:
- NF450-A ESD
- NF450P-A ESD
These models provide a torque range of 6.1–39 lbf.in (68.7–441 cN·m) for higher torque precision fastening applications.
Need protection for delicate assemblies?
Choose:
- NFS150-A ESD
- NFS220-A ESD
Soft Stop models utilize a precision soft stop clutch designed to help reduce shock to sensitive assemblies such as disk drives, plastics, and electronic components.
Need additional fastening control?
Choose a Plus model:
- NF150-A ESD Plus
- NF150P-A ESD Plus
- NF220-A ESD Plus
- NF220P-A ESD Plus
- NF450-A ESD Plus
- NF450P-A ESD Plus
Plus models feature selectable Double Hit Mode for soft joint applications and selectable Soft Start functionality (0.2–0.6 seconds).
Need angle-based fastening control?
Choose:
- NFT150-A ESD
- NFT220-A ESD
- NFT450-A ESD
These models provide Time Angle Control & Auto Reverse functionality, allowing users to set start and stop points by angle control within a range of 0.25–15 turns, along with adjustable stop holding time from 0.1–6 seconds.
NF-Series Models
Standard Models
| Model | Item Number | Torque Range (lbf.in) | Torque Range (cN·m) | Start Type |
|---|---|---|---|---|
| NF150-A ESD | 145846 | 2.6–13 | 29.4–147 | Lever |
| NF150P-A ESD | 145849 | 2.6–13 | 29.4–147 | Push-to-Start |
| NF220-A ESD | 145847 | 5.2–19 | 58.9–215.8 | Lever |
| NF220P-A ESD | 145850 | 5.2–19 | 58.9–215.8 | Push-to-Start |
| NF450-A ESD | 145848 | 6.1–39 | 68.7–441 | Lever |
| NF450P-A ESD | 145851 | 6.1–39 | 68.7–441 | Push-to-Start |
Soft Stop Models
| Model | Item Number | Torque Range (lbf.in) | Torque Range (cN·m) |
|---|---|---|---|
| NFS150-A ESD | 145865 | 2.6–13 | 29.4–147 |
| NFS220-A ESD | 145866 | 5.2–19 | 58.9–215.8 |
Plus Models
| Model | Item Number | Torque Range (lbf.in) | Torque Range (cN·m) | Start Type |
|---|---|---|---|---|
| NF150-A ESD Plus | 145852 | 2.6–13 | 29.4–147 | Lever |
| NF150P-A ESD Plus | 145855 | 2.6–13 | 29.4–147 | Push-to-Start |
| NF220-A ESD Plus | 145853 | 5.2–19 | 58.9–215.8 | Lever |
| NF220P-A ESD Plus | 145856 | 5.2–19 | 58.9–215.8 | Push-to-Start |
| NF450-A ESD Plus | 145854 | 6.1–39 | 68.7–441 | Lever |
| NF450P-A ESD Plus | 145857 | 6.1–39 | 68.7–441 | Push-to-Start |
Time Angle Control & Auto Reverse Models
| Model | Item Number | Torque Range (lbf.in) | Torque Range (cN·m) |
|---|---|---|---|
| NFT150-A ESD | 145858 | 2.6–13 | 29.4–147 |
| NFT220-A ESD | 145859 | 5.2–19 | 58.9–215.8 |
| NFT450-A ESD | 145860 | 6.1–39 | 68.7–441 |
Which NF-Series Model Should I Select?
Start with these questions:
- What torque range does the application require?
- Do you prefer lever start or push-to-start operation?
- Are you assembling delicate components that would benefit from a Soft Stop clutch?
- Is Double Hit Mode or Soft Start functionality needed for soft-joint applications?
- Do you require Time Angle Control & Auto Reverse?
- Will the screwdriver be used in an ESD-controlled environment?
- Is adjustable RPM important for the fastening process?
- Will the tool be used for continuous high-production assembly?
The answers to these questions will help determine the appropriate NF-Series model for your application.
Setup & Adjustment
NF-Series tools require:
- STC40 Transformer (Item #145754) as the power supply.
- Appropriate bit selection for the fastener.
- Torque adjustment based on the application using the external torque adjustment mechanism.
- Torque verification using a calibrated torque analyzer.
Certain NF-Series models require the Program Lock Key (Item #145774) to adjust RPM and Soft Start settings. The Program Lock Key connects to the STC40 Transformer during setup.
Can the Torque Be Adjusted Later?
Yes.
The NF-Series features an external torque adjustment scale, allowing torque to be adjusted within the model's specified range. After adjustment, Mountz recommends verifying the torque setting with a calibrated torque analyzer before returning the tool to production.
ESD Protection
NF-Series ESD models are designed to help prevent electrostatic discharge during assembly operations involving sensitive electronic components.
Proper ESD protection helps:
- Protect electronic assemblies
- Improve product reliability
- Reduce manufacturing defects
- Support ESD-controlled work environments
Applications
The NF-Series is commonly used in:
- Electronics assembly
- Medical device manufacturing
- Aerospace assembly
- Industrial manufacturing
- Precision fastening applications
Calibration & Quality Programs
The NF-Series can be tested and verified using Mountz torque analyzers, sensors, and run-down adapters as part of a calibration and quality control program.
Routine verification helps ensure fastening performance remains within specification and supports quality management initiatives.
Accessories & Related Products
Common NF-Series accessories include:
- Power supplies
- Torque Arms
- Tool Balancers
- Screw Presenters
- Vacuum Adapters
- Run-Down Adapters
- Torque Analyzers
Refer to the product page for compatible accessories and model-specific options.
Media & Supporting Content
Related Articles / Content
- Case Study: Aerospace Manufacturer Increases Production Efficiency With Brushless Electric Screwdrivers
- Understanding Joint Relaxation and Mitigation Strategies
- Ensuring Product Quality in Global Contract Manufacturing: The Importance of Torque Specifications and Verification
- Enhance Your Quality Management System Using Torque Control
- Guide: Longevity of Brushless Electric Screwdrivers versus Standard Electric Screwdrivers
- Guide: Optimizing Your Assembly Process: Selecting the Right Electric Screwdriver
Need Help?
- Contact Applications Engineering for setup guidance
- Speak with Sales for product selection
- Call us:
- North America:(408) 850-9978
- International: +44 1428 741756
M-F 6am - 5pm PST
