The 51mm thread is a common screw thread found on jerricans, “tight-head” containers, and DOT-approved containers in North America. Designed for secure sealing, this thread type is ideal for transporting and storing hazardous and non-hazardous liquids, such as chemicals, lubricants, and cleaning agents.

Frequently paired with caps featuring tamper-evident or venting options, the 51mm thread ensures compliance with safety regulations while minimizing leakage or contamination risks. Its size strikes a balance between accessibility and control, allowing for efficient pouring and filling.

The widespread use of the 51 mm thread in industrial and commercial applications makes it a trusted standard for dependable performance.