1. Tap Size Thread Size: 5/1632 UNEF (Right Hand); Square Shank Width: 5 mm/0.2 inches; Thread Length: 15 mm/0.59 inches; Total Length: 66 mm/2.6 inches; Accuracy: 2B; Flutes Quantity: 3 Flutes. 2. Wide Application For cutting continuous holes or flat base holes. With 3 straight cutting edges, fast chip removal downwards. Suitable for producing or recutting damaged threaded bushings in stainless steel, steel, copper, aluminum, iron, alloy steel, and plastic. 3. Taps Machine taps are used in threading machines, vertical drills, and milling machines. M1M3.5 micro taps are designed for wood and soft metals with lower hardness, especially in the watch industry. Predrill holes with a twist drill before threading. 4. Speed Steel The speed steel offers hardness, stability, toughness, wear resistance, and heat resistance. Made solely from the base material without any coatings, suitable for diverse applications.