Railroad Spike Head Markings: Deciphering the Date of Manufacture

When it comes to railroad spikes, there are various types and sizes that can be used for different applications. One important aspect of railroad spikes is their head marking, which provides information about the date of manufacture. Unlike dog spikes, rail screw spikes have a more complex system of markings that can vary from brand to brand.

Some brands use a combination of digits and symbols to indicate the month and year of manufacture. For example, a mark like '1902' might indicate March of 1902, while '98' would indicate May of 1898. Other brands may use a four-digit or two-digit year followed by a series of tic marks to indicate the month.

Deciphering these markings can be tricky, but it's important for railroads and manufacturers to accurately identify the date of manufacture in order to ensure compliance with international standards and specific geographic requirements. Railroad screw spikes are typically used to fasten concrete rail sleepers, and they can be screwed into plastic ferrules that are cast into the sleepers.

In addition to their head markings, railroad spikes also have different surface finishes and materials that can affect their performance and durability. For example, some spikes may be coated with a layer of paint or galvanization to protect them from corrosion. Others may be made from carbon steel or stainless steel, depending on the specific requirements of the application.

Despite these variations, there are certain standards and guidelines that manufacturers must follow when producing railroad spikes. These include customer drawings or samples, as well as surface finishes that meet customer needs.

Overall, understanding railroad spike head markings is crucial for ensuring the quality and integrity of rail infrastructure. By accurately identifying the date of manufacture and other relevant information, railroads and manufacturers can ensure that their tracks are safe, reliable, and durable for years to come.

Railroad spike head markings