Double Ended Headed Stud Bolts are specialized fasteners that feature a threaded section at both ends and a distinct head in the middle (or offset) of the stud. This unique configuration allows for versatile fastening solutions, enabling the stud to be anchored or secured from two different directions, often into two separate components. The head provides a specific bearing surface, a stop point, or a means of engaging the stud during installation or removal.

Definition

A Double Ended Headed Stud Bolt is a cylindrical fastener with external threading on both of its ends and an integrated head positioned between the two threaded sections. The head, which can take various forms (e.g., hexagonal, square, round with a drive feature), serves multiple purposes: it can act as a positive stop, a seating surface against a component, a wrenching feature for tightening, or a structural element to prevent pull-through. The threaded ends are designed to accept nuts or engage with internally threaded holes, allowing for adjustable and secure fastening in two directions.

Advantages

• Two-Way Fastening Capability: Allows for simultaneous fastening or anchoring of components from opposite sides, providing enhanced stability and load distribution.
• Positive Stop/Bearing Surface: The head provides a definitive stop or a large bearing surface against a component, ensuring consistent engagement or preventing over-insertion.
• Versatile Wrenching/Driving Options: Depending on the head type, it can offer a means for applying torque during installation or for mechanical retention without relying solely on the threaded ends.
• Reduced Requirement for Additional Spacers: The head can effectively act as a built-in spacer or standoff, simplifying assembly in certain applications.
• Enhanced Structural Integrity: Can be designed to distribute loads more effectively across connected components, especially when acting as an anchor or through-bolt.

Applications

• Flange Connections: Commonly used in piping and pressure vessel flanges where the head serves as a stop against one flange, and nuts secure the other flange, often in conjunction with gaskets.
• Engine and Machine Assembly: Utilized in engine blocks, pump housings, and gearboxes where components need to be precisely spaced and secured from both sides.
• Structural Steel Connections: Applied in certain structural frameworks where members are bolted together with a primary head bearing on one side and nuts on the other, for robust connections.
• Heavy Equipment Mounting: For anchoring heavy machinery to foundations, where the head secures one part of the mount and the threaded end secures another, or for through-bolting.
• Automotive Applications: Found in suspension systems, exhaust manifolds, and wheel hubs where a secure, headed connection is needed with double-sided threading.