An apparatus for inserting and removing a mixer rotor pin includes at least one rotor pin with a transverse bore, as well as a rod dimensioned for slidably engaging the transverse bore. The apparatus also includes a mixer rotor pin insertion and removal tool having a tool body. A bottom of the tool has a slot for selectively engaging the aforementioned rod upon insertion of the rod into the transverse bore, and a top of the tool has a non-circular socket for accommodating a driver tool.

A socket includes a housing having a first end dimensioned and configured for cooperation with an associated wrench and a second end dimensioned and configured for engagement with a locknut. The second end includes a first plurality of magnets disposed to maintain a single locknut against the second end, the second end and a second plurality of magnets disposed to maintain the second end against an associated housing with the associated locknut disposed intermediate the second end of the socket and the associated housing. The second end of the socket including a plurality of depending feet dimensioned and configured for meshing engagement with the locknut whereby rotation of the socket causes rotation of the locknut when the locknut is engaged with an associated externally threaded connector to move the locknut axially along the external threads of the externally threaded connector.

A fastener is provided that includes a shank and a head disposed along a lengthwise axis. The head includes a first drive head and a second drive head. Both the first drive head and the second drive head are configured for engagement with at least one drive tool for rotationally driving the fastener about the lengthwise axis. The first drive head is configured differently than the second drive head.

The disclosure relates to a lining arrangement for wear protection comprising: at least one lining element arranged to be fastened to a support structure; and at least one device, the device comprising: a first element adapted to be received in a through hole of said at least one lining element or a through hole created by adjacent lining elements, the first element having an axially arranged opening; a second element for engagement with the first element, such that the at least one lining element is attached to the support structure upon interconnection between the first element and the second element, and wherein an outer periphery of the second element comprises a plurality of grooves for engagement with a handling tool. The disclosure further relates to a method for fastening lining elements to a support structure.

Fasteners are disclosed for use with multiple standard torque delivery tools. The fasteners include several different torque bearing portions for use with different torque delivery tools, as well as non-torque bearing portions disposed between torque bearing portions.

The invention relates to a screen, which has a screen panel support and screening modules arranged in the screen panel support. The screening modules are fastened to the screen panel support by means of at least one device. The device comprises a first element attachable to the screen panel support and adapted to receive a opening of the screening module or an opening created by adjacent screening modules, the first element having an outer threading, and a second element having an inner threading for engagement with the outer threading of the first element, such that the screening module is attached to the screen panel support upon interconnection between the first element and the second element. The screen is characterized in that an outer periphery of the second element comprises at least one groove for engagement with a handling tool. The invention also relates to a method for fastening a screening module to a screen panel support.

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 fitting nut made of a resin material includes: a hollow, large-diameter tube portion having a female thread formed on its inner peripheral wall; and a small-diameter tube portion that is continuous to the large-diameter tube portion and having a hollow cylindrical shape with a smaller diameter than the large-diameter tube portion. The small-diameter tube portion includes, in the outer peripheral wall thereof, a plurality of engagement grooves that are depressed inwardly in the diameter direction of the small-diameter tube portion and extend along the longitudinal direction that is orthogonal to the diameter direction.

The disclosure relates to a lining arrangement for wear protection comprising: at least one lining element arranged to be fastened to a support structure; and at least one device, the device comprising: a first element adapted to be received in a through hole of said at least one lining element or a through hole created by adjacent lining elements, the first element having an axially arranged opening; a second element for engagement with the first element, such that the at least one lining element is attached to the support structure upon interconnection between the first element and the second element, and wherein an outer periphery of the second element comprises a plurality of grooves for engagement with a handling tool. The disclosure further relates to a method for fastening lining elements to a support structure.

An anti-loosening bolt and nut assembly structure includes a bolt having a bolt head and a bolt shank, two elastic washers, and a nut. The two elastic washers are sleeved on the bolt shank. The two elastic washers are matched with the bolt head and the nut, respectively. Each elastic washer includes an annular body having an opening. A bottom of the annular body is provided with anti-slip teeth. A top of the annular body extends upward to form an anti-loosening ring. An outer inclined surface is formed on an outer side of the anti-loosening ring. The anti-loosening ring is provided with a plurality of first unidirectional teeth. The bolt head and the nut each includes a unidirectional anti-loosening device matched with the first unidirectional teeth.