FGC Cam-Over Wrenches – FAQ & User Guide

Quick Answer

An FGC cam-over torque wrench is a preset torque tool that prevents over-tightening by physically stopping torque at a fixed value, ensuring consistent and repeatable fastening in production environments.

Who This Is For

Manufacturing and assembly operators
Quality and process engineers
Maintenance teams
Production managers evaluating torque tools
CX and Sales teams supporting hand tools

When Should You Use This?

Use FGC Cam-Over Torque Wrenches when:

Torque must remain fixed and tightly controlled
You are working within moderate to higher torque ranges
Multiple operators need to achieve consistent results
Over-tightening could damage components or compromise quality
You require repeatable torque in production or assembly environments

Should You NOT Use This?

Do not use FGC cam-over torque wrenches if:

Torque values need to change frequently → use an adjustable torque wrench
Torque data capture or traceability is required → use a digital or transducerized system
Applications are low-frequency or for general maintenance → use a click-type torque wrench
The required torque is outside the FGC operating range → select a tool designed for that torque range
Process control is not critical → a standard adjustable tool may be sufficient

How does the Cam-Over mechanism work?

Internal cam disengages at preset torque
Tool “slips” or “breaks”
Prevents additional force from being applied0

Result:
No over-torque, no guesswork.

Core Features

Physically disengages at the preset torque to prevent additional force and eliminate over-tightening.
Internal torque adjustment ensures the tool stays fixed at the required value, preventing unauthorized changes.
Delivers consistent torque (±4%) across repeated cycles, supporting quality-controlled assembly processes.
Designed for up to 10,000 cycles before recalibration, reducing downtime and maintenance costs.
Poka-Yoke (Error-Proofing) Design. Minimizes operator influence, ensuring consistent results regardless of user experience.

Torque Ranges (Typical Models)

FGC-5: 8.9 - 44.2 lbf.in
FGC-10D: 17.7 - 88.5 lbf.in (1/4'' Sq. Dr.)
FGC-10A: 17.7 - 88.5 lbf.in (3/8'' Sq. Dr)
FGC-30D: 4.4 - 22.1 lbf.ft (1/4'' Sq. Dr.)
FGC-30A: 4.4 - 22.1 lbf.ft (3/8'' Sq. Dr)
FGC-75A: 11.1 - 55.3 lbf.ft (3/8'' Sq. Dr)
FGC-75B: 11.1 - 55.3 lbf.ft (1/2'' Sq. Dr)

How to Set Torque

Option 1: Internal Adjustment

Use a hex key
Verify with a torque analyzer

Option 2: Factory Preset

Order tool pre-set to required torque

How do you use an FGC torque wrench?

Confirm correct preset torque
Attach socket or bit
Position tool on fastener
Apply smooth, steady force
Stop immediately at cam-over

Can Torque Be Changed Later?

Yes:

Adjust internally with a torque analyzer
Or send to a calibration lab

Decision Guide

FGC vs Other Options

Use FGC when:

Need over-torque prevention
Want a mechanical signal indicating the torque was reached
Require very high torque consistency

Move to other tools when:

FG Standard: Higher torque needed
Adjustable: Torque changes frequently
Smart Tools (ECT/EPT): Data tracking required

Use Cases (Real-World Examples)

1. Automotive Assembly

Problem: Over-tightened fasteners causing failures
Solution: FGC prevents over-torque, ensuring consistent fastening

2. Electronics Manufacturing

Problem: Low torque precision required
Solution: FGC delivers repeatable, accurate torque without damage

3. Aerospace Assembly

Problem: Strict compliance and quality standards
Solution: FGC ensures controlled torque and process reliability

Troubleshooting

Issue 1: Tool is not cam-overing

Cause: Calibration issue or internal wear
Solution: Verify calibration with torque analyzer

Issue 2: Tool feels inconsistent

Cause: Improper technique or misalignment
Solution: Apply steady force and ensure correct positioning

Issue 3: Suspected calibration drift

Cause: High cycle usage
Solution: Recalibrate tool immediately

Issue 4: Fastener issues (loosening or damage)

Cause: Incorrect torque setting or misuse
Solution: TConfirm torque value and operator technique

Issue 5: Tool not performing reliably

Cause: Wear or damage
Solution: Remove from service and inspect

Calibration & Standards

FGC tools follow International Organization for Standardization ISO 6789-1:2017: