These specialised fasteners are used to attach fluid traces to parts akin to calipers, grasp cylinders, and gasoline methods. Characterised by a hole bolt physique with a gap drilled via its heart and a radial gap(s) close to the threaded finish, they permit fluid to go via the bolt itself. This configuration permits a safe and leak-proof connection, particularly in tight areas the place typical fittings is likely to be troublesome to put in. For example, in a hydraulic braking system, it connects the brake line to the caliper, delivering brake fluid when the brake pedal is depressed.
The utilization of those bolts provides a number of benefits, together with compact design, ease of set up, and dependable sealing. The design ensures minimal fluid restriction whereas sustaining a sturdy connection able to withstanding excessive pressures. Traditionally, their adoption stemmed from the necessity for environment friendly and dependable fluid switch in automotive and aerospace functions the place house and weight are major concerns. Their continued use underlines their confirmed efficiency and flexibility to numerous engineering necessities.
