Answer :
The correct answer to the question is C. Powder-actuated tool.
Let's explore what a powder-actuated tool is and why it is the correct choice for driving steel pins or threaded studs into masonry and steel. Powder-actuated tools are a type of fastening system that uses small, controlled explosions from gunpowder or similar propellants to drive nails, pins, or studs into hard materials like concrete, masonry, and steel. These tools are sometimes referred to as 'direct fastening tools' or 'nail guns,' but they differ from traditional nail guns due to their use of explosive power.
Here's a step-by-step breakdown of how a powder-actuated tool operates:
Loading: First, a cartridge containing gunpowder and a fastener (nail, pin, or stud) is loaded into the tool.
Positioning: The tool is firmly placed against the surface where the fastener is to be driven.
Firing: When the operator pulls the trigger, the gunpowder ignites, creating a small explosion that generates rapid expansion of gases.
Driving the Fastener: This explosion drives the fastener at high speed directly into the substrate material.
Securing: The fastener embeds into the material, securely attaching objects or structural components.
Powder-actuated tools are widely used in the construction industry due to their efficiency and ability to secure heavy-duty materials. They can penetrate hard surfaces more effectively than manual hammering or other mechanical tools.
Other options listed like the mini hammer drill, pneumatic screw nailer, and air impact wrench do not use explosive force and are more suited for different tasks:
- A mini hammer drill is generally used for drilling holes in concrete or masonry.
- A pneumatic screw nailer is typically used for driving nails into wood using compressed air, not suitable for steel or masonry.
- An air impact wrench is designed for tightening or loosening bolts and nuts, commonly used in automotive and assembly applications.
Therefore, for driving steel pins or threaded studs into masonry and steel, the best tool from the given options is the powder-actuated tool.
