Railroad Spike Head Markings: Understanding the Various Types

When it comes to railroad spikes, one of the most crucial aspects is understanding the different types of head markings that can be found on these essential tools. Unlike dog spikes, rail screw spikes can have varied thread profiles, lengths, diameters, and drive heads based on international standards and specific geographic requirements.

Railroad screw spikes are typically used to fasten concrete rail sleepers and can be screwed into plastic ferrules casted into the concrete sleeper. The standard and surface of these spikes can vary according to customer needs. For smaller rail sections, the most common types of dog spikes include 5/8”*6” and 9/16”*5-1/2”, which are usually packaged in either 200 lb.

One of the unique features of railroad spikes is their head markings, which provide valuable information about the spike's date of manufacture. Some brands use a pair of double digits to indicate the year, such as 1902 for March or 98 for May. Others may use a 4-digit or 2-digit year followed by a series of tic marks to indicate the month.

The surface of railroad spikes can also vary depending on customer needs, with options including plain, black, hot dipped galvanized, or sherardized finishes. Railroad spikes are made from either carbon steel or stainless steel based on specific requirements.

There are various types of railroad spikes, but dog spikes and screw spikes are the most common. Dog spikes have an L-shaped head that resembles a dog's head and a square shank with a sloped top to fit the rail base. Screw spikes, on the other hand, have a threaded shaft and can be screwed into plastic ferrules.

Understanding railroad spike head markings is crucial for ensuring the proper installation of tracks and maintaining the safety of railway systems. By deciphering these markings, professionals in the industry can identify the correct type of spike for their specific needs and ensure that their tracks are secure and reliable.

Overall, railroad spikes play a vital role in securing steel rails and base plates to railway sleepers, and understanding the various types and head markings is essential for ensuring the proper installation and maintenance of these critical components.

Railroad spike head markings