NKP 5/8 NS LH 20 TPI 1.1/2 Inch Dia Left Hand High Speed Steel Circular Dies

The description "NKP 5/8 NS LH 20 TPI 1.1/2 Inch Dia Left Hand High Speed Steel Circular Dies LOGN DES" refers to a specific type of circular die used for threading operations. Here's a breakdown of the components:

1. NKP 5/8: This likely refers to the manufacturer or a specific model designation. "5/8" could also refer to a size or part of the specification.
2. NS: This could stand for "National Standard," which is a common threading system used in the United States, often in reference to pipe threads or machine screws.
3. LH: This stands for "Left Hand," indicating that the die is used for cutting left-hand threads. Left-hand threads are threaded in the opposite direction of right-hand threads.
4. 20 TPI: This refers to the "Threads Per Inch" (TPI), which measures how many threads are cut in one inch. A 20 TPI indicates a fine thread pitch, meaning the threads are closer together.
5. 1.1/2 Inch Dia: This refers to the diameter of the die, which is 1.5 inches (1.1/2 inch), indicating the size of the circular die.
6. Left Hand: Reinforces that the die is intended for cutting left-handed threads.
7. High-Speed Steel (HSS): The material of the die, indicating that it is made from high-speed steel, which is durable, heat-resistant, and suitable for high-speed cutting operations.
8. Circular Dies: These are used to cut or form external threads onto cylindrical workpieces. The circular form allows for precise threading in manufacturing and repair tasks.
9. LOGN DES: This could be a specification related to the design or a designation associated with the die or the manufacturer. It could indicate a special type of design or a specific characteristic of the die (such as a long design or a specialized profile).

Summary:

This is a high-speed steel, 1.5-inch diameter, left-hand threading die with a fine 20 TPI pitch. It is likely used in mechanical, industrial, or manufacturing applications to cut left-handed threads in rods, pipes, or other cylindrical parts. The "NS" could indicate compatibility with national standard threads. The "LOGN DES" might refer to a specific design or feature related to the die.