Dolphin HSS Uncoated Metric Fine Hand Tap, Dia: 15-18 mm (Set of 2)

The Dolphin HSS Uncoated Metric Fine Hand Tap set, ranging from 15 mm to 18 mm in diameter, consists of two high-speed steel (HSS) hand taps designed specifically for tapping fine metric threads in larger diameter holes. Here are the key features and details of this tap set:

1. High-Speed Steel (HSS) Construction: The hand taps are made from high-speed steel (HSS), known for its hardness, toughness, and wear resistance. HSS taps are suitable for tapping threads in a wide range of materials, including metals, plastics, and composites.

2. Metric Fine Thread Pitch: This tap set is designed for tapping fine metric threads, denoted as Metric Fine (MF). The tap sizes in the set cover diameters ranging from 15 mm to 18 mm, allowing for the creation of precise and strong threads in larger holes.

3. Uncoated Finish: The taps feature an uncoated finish, which is typical for general-purpose tapping applications. While uncoated taps may require more frequent lubrication and are not as resistant to wear as coated taps, they provide good performance and versatility in various materials.

4. Set of Two Taps: The set includes two hand taps per diameter—typically a taper (starter) tap and a plug (intermediate) tap. The taper tap has a more pronounced chamfer to assist in starting the thread, while the plug tap is used for continuing and finishing the threading process.

5. Versatile Applications: Dolphin HSS Uncoated Metric Fine Hand Taps are suitable for various industrial applications, such as automotive, machinery, toolmaking, and maintenance. They are commonly used in workshops and manufacturing facilities for creating fine threads in larger diameter holes.

6. Hand Tapping Operations: These taps are designed for manual hand tapping operations, where the taps are turned by hand with a tap wrench. It is important to use cutting fluid or lubricant during tapping to improve tool life and thread quality, especially when working with harder materials.

7. Precision Machining: The fine metric threads created by these taps are ideal for applications requiring high precision and strength, such as in the production of machinery, equipment assembly, and repairs.

In summary, the Dolphin HSS Uncoated Metric Fine Hand Tap set in larger diameters (15 mm to 18 mm) offers durable HSS taps for creating fine metric threads in various materials. The uncoated finish provides versatility, while the robust HSS construction ensures reliable performance in precision machining tasks. This tap set is a valuable addition to any workshop or machining facility requiring precise thread tapping capabilities in larger metric fine thread sizes.