Hex and toxy screwdriver

Hex Screwdrivers (Hex Keys / Allen Wrenches)

• Shape: Hexagonal (six-sided) recess in the screw head. The driver itself is typically an L-shaped “hex key” (also known as an Allen wrench) or a screwdriver bit with a hexagonal end.
• Appearance: The internal recess on the screw head is a perfect hexagon.
• Mechanism: The hexagonal driver fits snugly into the hexagonal socket, providing six points of contact for applying torque.
• Advantages:
  • Allows for good torque transmission.
  • Less prone to stripping than Phillips or slotted heads if the correct size is used.
  • Can be driven at a slight angle with ball-end hex keys, useful in tight spaces.
  • Common and inexpensive.
• Common Uses:
  • Furniture Assembly: Very common in flat-pack furniture.
  • Bicycles: Many bicycle components use hex bolts.
  • Automotive: Found in various parts of vehicles.
  • Machinery & Equipment: Used for assembly and maintenance.
  • Electronics: Smaller hex screws are sometimes found in electronic devices.
  • Plumbing: Used for certain fixtures and fittings.
• Naming Conventions: Sizes are usually denoted in millimeters (e.g., 2mm, 5mm, 10mm) for metric or fractions of an inch (e.g., 1/8″, 5/32″) for imperial.

Torx Screwdrivers (Star Screwdrivers / T-bits)

• Shape: A six-point, star-shaped recess in the screw head. The driver bit has a matching six-point star shape.
• Appearance: Looks like a star with six rounded points.
• Mechanism: The star shape provides a very high contact area between the driver and the screw head, distributing torque evenly across six points. This design virtually eliminates cam-out.