A collar for use on a water filtration tank adapter. The collar is formed as a ring adapted to thread onto the tank connection end of the adapter and abut the nut portion between the tank connection end and the pipe end of adapter. An o-ring, square in cross-section, is disposed on a top surface of the collar, offset medially towards the center. This top o-ring is adapted to abut the nut portion of the adapter. Another o-ring, square in cross-section, is disposed on the bottom surface, offset medially away from the center. This bottom o-ring is adapted to abut the tank head upon use. Accordingly, a water-tight seal is formed at the tank connection end and tank head, the collar functioning as both a positive stop and as a substitute for pipe tape.

A mounting device includes a base having an internal cavity, a top, and an open bottom in communication with the internal cavity. The device includes a first upper member above the base, wherein the first upper member extends upwardly from the base, and a second upper member is above the base, wherein the second upper member extends upwardly from the base. The device further includes a fastener opening formed though the base for receiving a fastener when the mounting device is secured to a roof. The fastener opening is in communication with the internal cavity.

A mounting device including a base having an internal cavity and an upper portion above the base. The upper portion extends upward from the base and includes a vertical member defining opposed first and second faces above the base. An aperture is formed through the upper portion and extends through the first and second faces. The base extends outward, beyond each of the first and second faces.

A tie rod for spanning a duct interior to join duct walls bounding the duct interior, that can be simply and inexpensively fabricated from sheet metal or other suitable material, including automatically, securely fastenable quickly and easily to the duct walls, often by one person, and which can be configured to be nestable for efficient storage and shipping, of elongate construction for spanning a duct interior, with a transverse attachment flange or flanges that can be pre-bent or bent onsite at the installation location via special bending features to snug to a duct wall, and include holes for threadedly receiving fasteners, having a shape and size to reduce fastening torque, with a two attachment flange configuration that resiliently self retains the fastener against loosening from vibration and other forces.

A spacer element serving to obtain a spacer washer positioned between first and second parts of an assembly. The spacer element includes a body having the same geometry as the spacer washer that is to be obtained and a circular score line whose diameter is equal to the internal diameter of the spacer washer that is to be obtained, this score line being configured to break upon insertion of a shank of a connection element, and a centering pad configured to center the score line with respect to the through-orifices of the first and second parts that are configured to accommodate the shank of a connection element when the centering pad is inserted into one of the through-orifices.

A mounting device including a base having an open bottom, a longitudinal axis, and a linear guide on the base. The linear guide guides support hardware in linear movement along the longitudinal axis. An internal cavity is under the base for containing a sealant against and in cooperation with a roof when the mounting device is secured to the roof. An opening is though the base is for receiving a fastener when the mounting device is secured to the roof. The opening is in communication with the internal cavity. The linear guide extends beyond the internal cavity.

A structural assembly of an aircraft has a fastener extending into first and second structural members. A washer is disposed between the fastener and one of the structural members to electrically insulate the fastener and the structural members. The washer has a core of reinforcement fibers supported in a thermoplastic matrix material. Electrically-insulating outer layers of glass fibers overlay the core.

A thermal insulating screw assembly includes a thermal insulating screw and a thermal insulating washer. The thermal insulating screw has a rotation head, a shank, and an external thread. A thermal insulating portion coats the rotation head and has a plurality of projections each of which is provided with a horizontal face, a vertical face, and an inclined face. The horizontal face is located at a top of each of the projections. The vertical face extends downward from the horizontal face. The inclined face extends inward and downward from the vertical face. The thermal insulating washer is positioned by the projections and has an axial hole which passes through the inclined face and the vertical face to the horizontal face, and is positioned on the horizontal face of each of the projections.

A heavy-duty, harsh environment coaxial connector assembly includes a mounting shell connector including a cylindrical body and an electrically conductive mounting flange extending from the cylindrical body, a plurality of mounting apertures formed in the flange to support the mounting shell connector via a plurality of fasteners extending through the respective mounting apertures, and wherein each of the plurality of fasteners is electrically isolated from the mounting flange.

A washer includes a single piece body made of a resilient and flexible material and having a split extending between an inner circumferential edge and a radially outer peripheral edge to provide the body with first and second ends. One end has circumferentially extending and radially spaced fingers, and the other end has circumferentially extending and radially spaced fingers. A joint structure is integrally formed with the first and second ends. The joint structure includes a first locking mechanism and a second locking mechanism. The second locking mechanism is only engageable after the first locking mechanism is fully engaged.