NFA-Series Robotic Electric Screwdrivers

Quick Answer

The NFA-Series is a line of robotic brushless electric screwdrivers designed for medium- to high-torque automated fastening applications. Featuring a precision automatic shut-off clutch, remote-start operation, front mounting flange, and brushless motor technology, the NFA-Series provides accurate torque control and dependable performance for robotic and fixtured production environments.

Who This Is For

Automation engineers
Manufacturing engineers
Robotics integrators
Process engineers
Quality engineers
Machine builders
Automotive manufacturers
Aerospace manufacturers
Industrial automation facilities

When Should You Use This?

Use the NFA-Series when:

Medium- to high-torque automated fastening is required
Robotic assembly systems are being integrated
Continuous production operation is required
Repeatable torque control is critical
Remote-start operation is needed
ESD-safe fastening tools are required
Higher torque capacity is needed than the BFA-Series

When Should You NOT Use This?

The NFA-Series may not be the best choice when:

Manual hand-held fastening is required
Ultra-low torque fastening is needed
Torque and angle traceability are required
Advanced programmable fastening strategies are needed
Portable or cordless operation is preferred
Vacuum screw pickup is required

For torque-angle monitoring and programmable fastening strategies, consider the Mountz ECT-Series or EPT-Series.

How the NFA-Series Works

The NFA-Series uses a high-performance brushless motor to drive a precision automatic shut-off clutch.

During operation, the screwdriver:

Receives a remote-start signal from the automation system.
Rotates the fastener until the preset torque is achieved.
Automatically shuts off when the target torque is reached.
Sends start and stop output signals to the automation controller.
Operates continuously with minimal heat buildup.

Result:

Accurate torque control
Repeatable fastening performance
Reliable robotic integration
Reduced maintenance
Increased production efficiency

Core Features

High-performance brushless motor
Precision automatic shut-off clutch
Remote-start operation
Front mounting flange for robotic integration
External torque adjustment scale
Continuous-duty operation with minimal heat buildup
Over Heat Protection (OHP)
Over Current Protection (OCP)
LED status indicator
ESD-safe construction
Compatible with the Mountz Scout Screw Counter
Forward and reverse operation
Requires the STC40-FA transformer

Configuration Options

Configuration	Best For
NFA150-A	Medium-torque robotic fastening
NFA220-A	Higher torque automated assembly
NFA450-A	Maximum torque robotic fastening

Available Models

The NFA-Series includes robotic brushless electric screwdrivers covering torque ranges from 2.6 to 39 lbf.in (29.4–441 cN·m). All models feature remote-start operation, ESD-safe construction, and a front mounting flange for robotic integration.

NFA-Series Model Chart

Model	Item Number	Driver Type	Torque Range	Adjustable RPM	Drive Size	Weight
NFA150-A ESD	145861	Remote Start	2.6–13 lbf.in (29.4–147 cN·m)	800–1700	1/4" Female Hex	18.4 oz
NFA220-A ESD	145862	Remote Start	5.2–19 lbf.in (58.9–215.8 cN·m)	600–1200	1/4" Female Hex	18.4 oz
NFA450-A ESD	145863	Remote Start	6.1–39 lbf.in (68.7–441 cN·m)	300–600	1/4" Female Hex	18.4 oz

Specifications are based on the BFA & NFA-Series Product Brochure.

Model Selection Guide

If you need:	Recommended Model
Medium-torque robotic fastening	NFA150-A
Higher torque automated assembly	NFA220-A
Maximum torque robotic fastening	NFA450-A
Faster cycle times	NFA150-A
Highest torque capacity	NFA450-A

Compatible Accessories

Accessory	Purpose
STC40-FA Transformer	Required power supply
Mountz Scout Screw Counter	Screw counting and error-proofing
1/4" Hex Power Bits	Fastening applications
Robotic Mounting Hardware	Automated integration

Transformer

The NFA-Series requires the STC40-FA transformer for operation.

The STC40-FA provides:

30/40 VDC output
Over Heat Protection (OHP)
Over Current Protection (OCP)
LED tool status display
Compatibility with the Mountz Scout Screw Counter

The transformer supports all NFA-Series models and is designed for continuous production environments.

Setup & Adjustment

Mount the NFA-Series screwdriver using the integrated front mounting flange.
Connect the screwdriver to the STC40-FA transformer.
Connect the transformer to the automation controller or PLC.
Install the appropriate 1/4" hex driver bit.
Adjust the torque setting using the external torque adjustment scale.
Verify torque output with a calibrated torque analyzer before production.
Connect the Mountz Scout Screw Counter if screw counting or error-proofing is required.
Run sample fastening cycles and verify communication with the robotic system before beginning production.

Common Applications

The NFA-Series is commonly used in:

Robotic assembly systems
Automated production lines
Automotive manufacturing
Aerospace assembly
Industrial equipment manufacturing
Electronics production
Medical device manufacturing
High-volume fastening applications requiring remote-start operation

Use Cases (Real-World Examples) Robotic Assembly

Problem: Automated assembly systems require a screwdriver that can deliver repeatable torque and integrate with robotic equipment.

Solution: The NFA-Series combines remote-start operation, a front mounting flange, and a precision automatic shut-off clutch for robotic and fixtured fastening applications.

Higher-Torque Automated Fastening

Problem: Automated assembly applications require more torque than low-torque robotic screwdrivers can provide.

Solution: NFA-Series models cover torque ranges up to 39 lbf.in, supporting medium- and higher-torque robotic fastening applications.

ESD-Sensitive Manufacturing

Problem: Electrostatic discharge can damage sensitive components during automated assembly.

Solution: All NFA-Series models are ESD designed for use in static-sensitive production environments.

High-Volume Automated Production

Problem: Continuous production lines require fastening tools that operate reliably with minimal heat buildup and maintenance.

Solution: The brushless motor design supports continuous operation while reducing maintenance requirements associated with conventional brushed motors.

Error-Proofing Applications

Problem: Manufacturers need to verify that all required fasteners have been installed before completing an assembly.

Solution: The NFA-Series can be connected to the Mountz Scout Screw Counter to support screw counting and improve assembly quality.

Maintenance

Verify torque output regularly using a calibrated torque analyzer.
Inspect the drive spindle and bit holder for wear or damage.
Keep the screwdriver clean and free of dust or debris.
Inspect cables and electrical connections before operation.
Verify that the mounting flange and installation hardware remain secure.
Replace worn driver bits as needed to maintain fastening accuracy.
Periodically confirm torque and speed settings as part of the preventive maintenance program.

Integration & Advanced Features

High-performance brushless motor
Precision automatic shut-off clutch
Remote-start operation
Front mounting flange for robotic and fixtured installation
Start and stop output signals
Forward and reverse operation
Adjustable RPM
External torque adjustment scale
Continuous-duty operation with minimal heat buildup
Overheat Protection
Over Current Protection
LED tool status indication
ESD-safe construction
Compatible with the Mountz Scout Screw Counter
Requires the STC40-FA transformer

Media & Supporting Content

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

NFA-Series Robotic Electric Screwdrivers – FAQ & User Guide