A screwdriver, including driver bit sleeve, revolving wheel-shaped driver bit holder and pushrod, the revolving wheel-shaped screwdriver bit holder is rotatably arranged at the rear side of the driver bit sleeve, the revolving wheel-shaped driver bit holder is distributed with axial containing hole containing driver bit and the containing hole can be turned to axially coincide with the inner hole of the driver bit sleeve; pushrod is arranged at the rear side of the revolving wheel-shaped driver bit holder and axially coincides with the inner hole of the driver bit sleeve, the inner hole of the driver bit sleeve includes torque transmission segment at the front part and guiding segment at the rear part, the hole wall of the guiding segment is arranged as guiding surface; and it can also include handle, pushbutton set, pushrod which extends into one of containing holes of driver bit holder when pushbutton set is positioned at first positioning portion of the front part of slideway on the handle, pushing the driver bit in the containing hole toward the driver bit sleeve on the handle until the driver bit extends out of the driver bit sleeve, and the pushrod is positioned at the rear side of the driver bit holder when the pushbutton set is positioned at the rear part of the slideway on the handle and take the corresponding driver bit back into the corresponding containing hole. Fewer constituent parts, simple structured, easy to replace the driver bit.

The fastener drive tool is a hand powered drive device that is used to drive fasteners around an axis. The fastener tool device is formed in the shape of a cylinder. The first end of the fastener drive tool is designed to receive driver bits designed for use with power drills, including, but not limited to, 6 point, 12 point, flat head, Phillips head, and star driver bits and driver bit sets. The second end of the cylinder is designed to receive a square driver bits commonly used for driver sockets. Optionally, the first end and the second end can be fitted with a ratchet device. The fastener drive tool comprises a flexible steel wire, a rubber covering, a woven steel lube, a first driver port, and a second driver port.

A tool bit includes a drive portion configured to be engaged by a tool, the drive portion including a first maximum outer dimension, a shank extending from the drive portion and including a reduced outer diameter, and a tip coupled to an end of the shank opposite from the drive portion. The tip includes a compressive residual stress layer formed by blasting to increase a wear resistance of the tip relative to the shank. The tip additionally includes a second maximum outer dimension. The reduced outer diameter of the shank is smaller than the first maximum outer dimension of the drive portion and the second maximum outer dimension of the tip.

A fastener installation tool is provided for installing threaded fasteners through a washer plate having a center hole used in connection with roofing membrane installation. The installation tool is configured to receive different types of washer plates, and is easily dis-assembleable in the field without the need for tools in order to easily and simply clear jams.

A driving shank assembly includes a tube, a drive head, a connector, two quick release nuts, and two fastening caps. The tube has two mounting portions each provided with a mounting recess for mounting the drive head and the connector respectively. The two quick release nuts are locked onto the two mounting portions of the tube respectively. The two fastening caps are locked onto the two quick release nuts respectively. Each of the two fastening caps has interior provided with an inner stepped edge. The drive head is provided with a stepped positioning edge abutting the inner stepped edge of one of the two fastening caps. The connector is provided with a stepped positioning edge abutting the inner stepped edge of the other one of the two fastening caps.

A tool configured to install and torque multiple fasteners, such as nuts and/or bolts, positioned in confined and/or hard to reach areas. The tool includes a body portion, a plurality of fastener retainers, and a structure which permits both the remote tightening and torquing of such fasteners. The tool also provides an actuator for the remote release of torque loads which may build up in the fastener retainers during such torquing of the fasteners. The actuator includes a lever arm pivotally connected to the body portion and a cam that is rotatable between a first position and a second position. A linkage is engaged by the cam and urges the lever arm to a torquing position upon the cam being in the first position and to a torque release position upon the cam being in the second position.

The combination of a driver and fastener that allows a user to insert and remove the fastener by applying larger than normal torque loads to it includes: (a) a fastener with a proximal end handle and a distal end head configured to provide a standard indentation and an additional recess that provides additional surface area that allows larger torque loads to be applied to the fastener, (b) a main driver with a shaft having a central bore, a handle at its proximal end and a head at its distal end configured to allow it to be temporarily inserted into the fastener's head, and (c) an awl driver having an awl shaft with an awl handle affixed to its distal end and its proximal end including a tip configured to allow it to pass through the main driver's bore and be brought into contact with the fastener's head where it is used to cut into the fastener cannula so as to temporarily adhere the awl driver to the fastener.

An electrically isolated coupler may include a driven body, a drive body and an insulating member. The drive body is made of first metallic material and has a driven end configured to interface with a fastening component. The driven body includes a first interface portion and the drive body includes a second interface portion. The drive body is made of a second metallic material and has a drive end configured to interface with a driving tool. The insulating member is disposed between the drive body and the driven body to electrically isolate the drive body and the driven body from each. The first interface portion includes at least one axially extending portion that extends toward the drive body, and the second interface portion includes at least one axially extending portion that extends toward the driven body. The insulating member is disposed between the respective at least one axially extending portions of the first and second interface portions.

An angled adapter for coupling a tool bit to a tool includes a housing and a transmission assembly positioned in the housing. The transmission assembly is configured to convert an input torque about a first axis from the tool to an output torque about a second axis acting on the tool bit. The second axis is disposed at an angle relative to the first axis. The angled adapter also includes a shank supported by the housing and including a tool coupling portion configured to couple to the tool. The tool coupling portion has an outer dimension. The shank also includes a transmission coupling portion coupled to the transmission assembly, and an intermediate portion extending between the tool coupling portion and the transmission coupling portion. The intermediate portion has a diameter that is less than the outer dimension.

A push-pull bit detaching and mounting tool including a casing is described herein. A ratchet wheel seat having a conveying passage is disposed at an end portion of the casing. A ratchet wheel head having bit mounting holes is disposed on the ratchet wheel seat. A ratchet wheel control mechanism is disposed between the ratchet wheel head and the ratchet wheel seat. An accommodating groove is formed on the casing. A bit storage seat is disposed in the accommodating groove. A plurality of storage holes are formed on the bit storage seat in the circumferential direction. A positioning structure is disposed between the bit storage seat and the accommodating groove. The casing has a mounting seat. A push-pull rod having a first permanent magnet at an end portion is disposed on the mounting seat, and an axial positioning mechanism is disposed between the push-pull rod and the mounting seat.