Properties:

A boltlike item having a concentric hole along the longitudinal centerline which may extend a part or the full length of the item. It has a hole(s) perpendicular to the axis, joining or passing through the concentric hole along the longitudinal centerline. The item is designed to distribute fluid, air, or lubricant through its body to a mating item, such as a connector, multiple, fluid pressure line, bearing(s), bushing(s), or the like. The item must be capable of attaching to a block fitting and/or a tubing line or be designed to accommodate a fitting, lubrication. Excludes bolt, internally relieved body; bleeder valve, hydraulic system; and bushing, machine thread. See also pin, vehicular leaf spring shackle.