This disclosure relates generally to couplings used in mining and other applications. An extraction device for removing an adapter from a port formed in a structure is provided. The extraction device may include an end wall and a side wall. The end wall may define an external face of the extraction device. The side wall may extend axially away from a periphery of the end wall. The side wall may terminate at an end face of the extraction device. The end face may have a larger dimension than the port so as to abut the structure adjacent to a periphery of the port. The side wall may include an inner surface and an outer surface. The inner surface may have a threaded portion.

A fastener comprises a threaded surface and an adhesive composition at least partially disposed on the threaded surface. The adhesive composition includes an inorganic compound comprising at least one Group 1 metal and at least one Group 13 element and/or Group 14 element. The inorganic compound is present in an amount of at least about 20 parts by weight based on 100 parts by weight of the adhesive composition. A method of making the (coated) fastener comprises the steps of providing a fastener, providing the adhesive composition, and applying the adhesive composition to at least a portion of the threaded surface of the fastener. A method of joining adjacent elements comprises the steps of providing the adjacent elements, providing the fastener, and disposing the fastener adjacent and/or through the adjacent elements. An adhesive, formed by curing the adhesive composition, has excellent physical properties, including adhesive strength and high temperature resistance.

A screw includes a screw cap and a shank extending downward from the screw cap. The shank has an outer circumferential surface on which a thread is formed. The shank has a lower end forming a tip section. The screw cap is extended downward to form a conic section. The conic section is provided thereon with a reverse prevention mechanism, which is constructed to include at least one step structure. After the screw is screwed into a workpiece, in an attempt to screw the screw out of the workpiece, the reverse prevention mechanism providing a blocking and resisting effect to prevent the screw from being readily screwed out of the workpiece and thus, a reverse prevention effect of the screw can be enhanced to thereby improve overall performance of use of the screw.

A screw includes a screw cap and a shank extending downward from the screw cap. The shank has an outer circumferential surface on which a thread is formed. The shank has a lower end forming a tip section. The screw cap is extended downward to form a conic section. The conic section is provided thereon with a reverse prevention mechanism, which is constructed to include at least one step structure. After the screw is screwed into a workpiece, in an attempt to screw the screw out of the workpiece, the reverse prevention mechanism providing a blocking and resisting effect to prevent the screw from being readily screwed out of the workpiece and thus, a reverse prevention effect of the screw can be enhanced to thereby improve overall performance of use of the screw.

A screw includes a screw cap and a shank extending downward from the screw cap. The shank has an outer circumferential surface on which a thread is formed. The shank has a lower end forming a tip section. The screw cap is extended downward to form a conic section. The conic section is provided thereon with a reverse prevention mechanism, which is constructed to include at least one step structure. After the screw is screwed into a workpiece, in an attempt to screw the screw out of the workpiece, the reverse prevention mechanism providing a blocking and resisting effect to prevent the screw from being readily screwed out of the workpiece and thus, a reverse prevention effect of the screw can be enhanced to thereby improve overall performance of use of the screw.

A machine element has individual ring components (10, 12) fixable to third components such as axles, hubs or shafts by internal and/or external threads. One ring component (10) can be moved in an axial direction relative to another ring component (12), by clamping screws (18). The two ring components (10, 12) are independent components that delimit a separation space (22) with their adjacent mutually facing end-faces. The separation space opens on all sides to the surroundings. Only the clamping screws (18) of the adjusting device pass through the separation space (22).

A self-punching functional element serves for fastening to a workpiece, in particular to a high-strength sheet metal part, and comprises a functional section; and a fastening section that has a contact surface for an engagement of a setting device, an end face remote from the contact surface, and an outer peripheral surface connecting the contact surface and the end face. The end face is radially outwardly bounded by a punching edge for punching a slug out of the workpiece, and at least one projection is provided at the outer peripheral surface adjacent to the contact surface, said projection rising from the outer peripheral surface in a radial direction and extending further outwardly in the radial direction than the punching edge.

Devices and systems for locking an ammunition container. A locking bolt of the present disclosure includes a head portion, an extension portion extending from the head portion or from an optional flange portion adjacent the head portion, the extension portion having a threaded portion, and a channel defined through a portion of the extension portion, the channel configured to receive part of a fastener element therethrough.

Devices and systems for locking an ammunition container. A locking bolt of the present disclosure includes a head portion, an extension portion extending from the head portion or from an optional flange portion adjacent the head portion, the extension portion having a threaded portion, and a channel defined through a portion of the extension portion, the channel configured to receive part of a fastener element therethrough.

A support assembly (10) having a structural element (12) having first and second non-parallel adjoining surfaces (18), a bracket (14) attached to the structural element (12), and a component support (16). The bracket (14) has a first flange (20) including a first attachment surface (24) adhesively bonded to the first surface (18) of the structural element (12), a second flange (20) including a second attachment surface (24) adhesively bonded to the second surface (18) of the structural element (12), and a connection portion (48) interconnecting the first and second flanges (20), the connection portion (48) extending spaced from the structural element (12) such that a gap (52) is defined therebetween. The component support (16) is engaged to the first flange (20). The connection portion (48) may have a lower resistance to rupture than that of the first and second flanges (20). A method of removably securing a component to a structural element is also discussed.