A threaded fastener includes a bolt and a washer. The washer has a washer main body and a seal member provided at an outer peripheral side of the washer main body. The washer is caulked and fixed to a shank portion of the bolt in a water stop state, and the seal member is in contact with a fastened member in a water stop state, with a bearing surface of the washer main body held in contact with the fastened member. The seal member is provided on its outer periphery with a protrusion portion that protrudes outward beyond a radially outer end of a contact portion of the seal member with the washer in a no-load state. A back surface of the protrusion portion on the opposite side of the fastened member is an inclined surface.

The present disclosure relates to a method for use in installation of a mill liner, the method including (a) retaining a mounting bolt at least partially within a liner opening extending through the mill liner, (b) positioning the mill liner against a mill shell so that the retained mounting bolt is aligned with a mill shell opening extending through the mill shell, (c) selectively coupling an extraction tool to the mounting bolt, the coupling performed by an operator outside of the mill shell, (d) detaching the mounting bolt from the liner using the extraction tool; (e) pulling the mounting bolt through the mill shell opening so that at least a portion of the mounting bolt protrudes outside of the mill shell, and, (e) securing a fastener onto the mounting bolt to thereby attach the mill liner to the mill.

A wall mounting system is provided including a fastening member including one or more mounting studs and one or more anchor apertures. The fastening member is configured to be anchored to a support structure by one or more fasteners disposed through the one or more anchor apertures. The wall mounting system also includes a bushing assembly including an inner portion including a through hole configured to receive a mounting stud and an outer portion configured to rotate about the inner portion and including at least one set screw aperture configured to align with a set screw aperture of an accessory sleeve and receive a set screw. Rotation of the outer portion about the inner portion enables indexing of the set screw aperture about a longitudinal axis of the bushing assembly.

In a fastening device for fastening a bolt, a male thread is formed on a side surface of a bolt head part, and a part to be engaged is formed on a top surface of the bolt head part. The fastening device includes a bit having a tension rod having a rod female thread part, and an engaging part installed inside the tension rod and engaging the engaged part, the bit causing the bolt to rotate where the engaged part and engaging part are engaged; a supporter surrounding the tension rod in the circumferential direction such that the lower end part thereof protrudes below the lower end part; a sensor for sensing vertical compression force acting on the supporter; a first motor for causing the bit to rotate about the axis; and a second motor for causing the tension rod to rotate about the vertically extending axis.

To provide a tensioning device capable of tensioning a bolt from a bolt head side while suppressing increase in the number of components. A tensioning device is configured to apply upward tension to a bolt fastened to a fastened member H. A first male thread portion is formed on an outer circumferential surface of a head of the bolt. The tensioning device includes a connection member having a first female thread portion to be threadly engaged with the first male thread portion, a tensioning mechanism for tensioning the bolt via the connection member in a state where the first male thread portion is threadly engaged with the first female thread portion, and a tension bearer which is disposed around an outer circumference of the connection member, and bears a reaction force applied from the fastened member H in tensioning performed by the tensioning mechanism.

A packaging structure for a motor casing, comprising an upper cover, a lower cover and a flange, wherein the upper cover and the lower cover are separately located over two sides of a motor spindle, the upper cover and the lower cover are combined into the motor casing for receiving a rotor, a stator, a bearing and a control circuit board of a motor, the upper cover and the lower cover are fastened by at least one first bolt, the first bolt passes through the upper cover in a radial direction of the motor to screw into a threaded hole of the lower cover, the first bolt evades positions of both the rotor and the stator, the flange is a circular member which binds a front end of the combined upper cover and lower cover, and the flange is fastened onto the front end of both the upper cover and lower cover by second bolts.

(in connection with FIG. 1)

The invention relates to a ballistic protective helmet (10) comprising a shell (21) comprising a shell material that is produced from a number of textile layers (11, 12) connected in a connection matrix.

The shell (21) of the protective helmet (10) according to the invention has a blind hole (22), wherein a threaded sleeve (23) has an outer thread (25) that penetrates into the shell material which surrounds the blind hole (22) in a peripheral direction, and wherein the threaded sleeve (23) has an inner thread (26) for connecting to a screwing means (24) having an outer thread (31).

To provide a tensioning device capable of tensioning a bolt from a bolt head side while suppressing increase in the number of components. A tensioning device is configured to apply upward tension to a bolt fastened to a fastened member H. A first male thread portion is formed on an outer circumferential surface of a head of the bolt. The tensioning device includes a connection member having a first female thread portion to be threadly engaged with the first male thread portion, a tensioning mechanism for tensioning the bolt via the connection member in a state where the first male thread portion is threadly engaged with the first female thread portion, and a tension bearer which is disposed around an outer circumference of the connection member, and bears a reaction force applied from the fastened member H in tensioning performed by the tensioning mechanism.

The present invention is concerned with improvements to removable fasteners and particularly relates to removable and re-usable fasteners with features that allow them to be gripped and handled positively. The present invention therefore provides a fastening system comprising a fastener and a tool, the tool being suitable for installing and removing the fastener from an aperture in a work-piece, wherein the fastener has a main body and a head at one end, and wherein the head of the fastener and the tool have grip features that allow the fastener to be releasably locked to the tool to prevent separation of the fastener and tool during installation and removal of the fastener. This allows the fastener to be handled positively without fear of the fastener becoming misaligned, or dropping off the tool.

A wall mounting system is provided including a fastening member including one or more mounting studs and one or more anchor apertures. The fastening member is configured to be anchored to a support structure by one or more fasteners disposed through the one or more anchor apertures. The wall mounting system also includes a bushing assembly including an inner portion including a through hole configured to receive a mounting stud and an outer portion configured to rotate about the inner portion and including at least one set screw aperture configured to align with a set screw aperture of an accessory sleeve and receive a set screw. Rotation of the outer portion about the inner portion enables indexing of the set screw aperture about a longitudinal axis of the bushing assembly.