Introduction to Hook Spikes
Hook spikes, also known as T-head spikes, are a variety of railroad spikes that have been utilized in railway construction since the 1800s.
Named for their distinctive T-shaped heads, these spikes are engineered to prevent dislodgment from the tie. Initially employed in the mid-19th century, hook spikes were widely used in the construction of early railroads in the United States.
Specifications and Design
Typically measuring about 5.5 inches in length with a diameter of approximately 9/16 inch, hook spikes feature a T-shaped head that spans around 2 inches in width and about 5/16 inch in thickness. The head is intricately designed to snugly fit against the rail, minimizing movement.
Manufacturing Process
Primarily composed of high-carbon steel, hook spikes undergo a forging process during production. The steel is heated to high temperatures and shaped using a press or drop hammer. Following this, the head of the spike is formed using either a rolling machine or a heading machine.
