A fastener system comprising a tool and fastener is contemplated. The tool comprises an elongated member having a longitudinal bore that receives the fastener. The fastener is driven by the tool into a working surface whereby first and second vents capture a portion of the propellant gas to optimize penetration of the fastener and reduce the sound level. The fastener typically has a first diameter and a second diameter that meet at a step. A washer can receive the first diameter of the fastener. It is contemplated that the alignment of the fastener as it penetrates the work surface is maintained by at least one of (i) the head of the fastener and the longitudinal bore, (ii) washer, and (iii) a clip to reduce failures and spalling.

An improved tool for installing an explosively driven fastener as well as an improved explosively driven fastener for use therewith are disclosed. The fastener includes a nail having a head with an explosive load attached thereto in a plastic cap that includes a buffer. The tool has a plurality of concentric cylinders and springs including a muzzle for receiving the fastener head and explosive load. A spring actuated firing pin ignites the load causing it to explode and drive the nail out of the tool. The explosion also automatically resets the tool. The tool and the fastener provide many advantages over existing explosively driven fasteners and the tools used to install them.

A high-speed gunpowder actuated nail with a toothed tube includes: a nail member including an outer threaded portion; a tubular member including an inner threaded portion screwed to the outer threaded portion; an actuating portion mounted to the tubular member; and a percussion cap mounted to an end of the tubular member remote from the nail member. As such, it can be applied for effective screw connection of a threaded rod of small size, and the threaded rod and the nail member are arranged to be perpendicular to each other so that it has high structural strength, which improves the assembly strength to solve the difficulty and high cost of processing the inner thread of the tubular portion of the conventional one-piece high-speed nail, and solve the problem of insufficient screw connection strength due to the insufficient teeth of the conventional hanger.

A high-speed nail combined with an inner-toothed tube having an expandable padding includes: a main body including a tubular member and an expandable flange, the tubular member including a first space and a threaded portion, the expandable flange integrally projecting form the tubular member and expending in a nailing direction to define a second space, the second space being in communication with the first space; a drive pin connected to the tubular member by insertion in the nailing direction, including a nail head and a nail body connected to each other, the nail head being located in the first space, the nail body extending from the first space to the second space; and a gunpowder actuating unit received in the first space.

A high-speed nail combined with an inner-toothed tube having an expandable padding includes: a main body including a tubular member and an expandable flange, the tubular member including a first space and a threaded portion, the expandable flange integrally projecting form the tubular member and expending in a nailing direction to define a second space, the second space being in communication with the first space; a drive pin connected to the tubular member by insertion in the nailing direction, including a nail head and a nail body connected to each other, the nail head being located in the first space, the nail body extending from the first space to the second space; and a gunpowder actuating unit received in the first space.

A spring tool for actuating explosive fasteners for driving nails into a substrate is disclosed. For the tool to operate at its maximum potential the firing pin guide should be pushed securely against the rear of the fastener and the tip of the fastener should be pushed securely against the substrate. The action of the operator pushing the tool forward to actuate the tool moves the trigger body forward while compressing the firing spring until the trigger body travels the exact distance needed to release the trigger ball. The trigger body must also be in optimal rotational orientation with the tool and means for accomplishing the alignment is disclosed.

A spring tool for actuating explosive fasteners for driving nails into a substrate is disclosed. For the tool to operate at its maximum potential the firing pin guide should be pushed securely against the rear of the fastener and the tip of the fastener should be pushed securely against the substrate. The action of the operator pushing the tool forward to actuate the tool moves the trigger body forward while compressing the firing spring until the trigger body travels the exact distance needed to release the trigger ball. The trigger body must also be in optimal rotational orientation with the tool and means for accomplishing the alignment is disclosed.