Screwdrivers, Hex Keys, and Torx Tools

These tools are often underestimated, yet they are responsible for a large number of slips, stripped fasteners, and hand injuries offshore. Using the right type and size is critical.

1. Screwdrivers: Types and Correct Usage

• Flathead (Slotted) Screwdrivers

• Must fit the slot width exactly
• Too small → slips out
• Too large → damages screw head

• Phillips Screwdrivers

• Designed for cross-head screws
• Must match the exact size (PH1, PH2, etc.)
• Incorrect size causes cam-out (slipping)

Safe Techniques

• Maintain straight alignment
• Apply steady pressure
• Keep other hand away from slip path
• Never use a screwdriver as a pry bar

2. Hex Keys (Allen Keys)

Used for socket-head bolts.

Important rules:

• Use the correct metric size
• Replace worn or rounded keys immediately
• Long-arm keys give more torque
• Ball-end keys are for speed, NOT high torque

Common hazards:

• Rounding bolt heads
• Sudden release leading to hand impact

3. Torx Tools

Torx screws are used because they:

• Reduce slippage
• Allow higher torque
• Last longer without deformation

Safety considerations:

• Always insert fully
• Ensure size matches exactly (T15, T20, T25…)
• Do not apply side-load force

4. Preventing Stripped or Rounded Fasteners

Stripped fasteners cause:

• Increased job time
• Rework
• Need for extraction tools
• Higher injury risk

To prevent rounding:

• Choose the correct tool size
• Apply force slowly and in line
• Stop immediately if slipping occurs
• Replace worn tools

5. Line-of-Fire Awareness

Ask yourself:

• “Where will my hand go if this slips?”
• “Is my body aligned safely?”
• “Is the tool likely to cam-out under pressure?”

Keeping fingers out of the slip path prevents injuries.

Key Takeaways

• Correct size = essential for safety and efficiency
• Worn tools must be replaced
• Ball-end hex keys are NOT for high torque
• Straight alignment prevents slipping and injury