Direct fastening technology is a technique in which materials are attached to steel, concrete or masonry by use of a tool driving special hardened nails or studs. Materials to be attached include steel, wood, insulation and some kinds of plastic. Fastener driving power is generated by a powder load (a cartridge containing combustible propellant powder, also known as a booster), combustible gas, compressed air or, most recently, electric power provide by a rechargeable battery.
When used appropriately, direct fastening methods can increase the productivity by a factor of as much as five times depending on the alternative method used and the type of application. The alternative methods can be drilling and anchoring, screw fastening, welding, clamping, etc. For drywall contractors, the following applications are generally well-suited for direct fastening methods (subject to local code approvals).