Dolphin HSS Straight Flute Short Hand Tap, BSF, Size: 1 to 4 Inch (Set of 3)

The Dolphin HSS Straight Flute Short Hand Tap set for British Standard Fine (BSF) threads, ranging from 1 inch to 4 inches in size, consists of three high-speed steel (HSS) hand taps designed specifically for tapping fine 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 steel, aluminum, brass, and other alloys.

2. Straight Flute Design: These hand taps feature a straight flute design, characterized by straight grooves along the tap body. The straight flute design helps in efficient chip evacuation during the tapping process.

3. British Standard Fine (BSF) Thread Pitch: This tap set is designed for tapping British Standard Fine (BSF) threads, which are commonly used in applications requiring finer threads compared to British Standard Whitworth (BSW) threads. BSF threads are typically used in automotive, aviation, and machinery industries.

4. Range of Sizes: The tap sizes in the set cover a range from 1 inch to 4 inches, allowing for the creation of BSF threads in larger diameter holes commonly encountered in heavy-duty industrial applications.

5. Set of Three Taps: The set includes three hand taps per size—typically a taper (starter) tap, a plug (intermediate) tap, and a bottoming (finishing) tap. The taper tap has a more pronounced chamfer to assist in starting the thread, the plug tap is used for continuing the threading process, and the bottoming tap is used for finishing threads close to the bottom of blind holes.

6. Versatile Applications: Dolphin HSS Straight Flute Short Hand Taps for BSF threads are suitable for various heavy-duty industrial applications requiring fine threads with higher strength and resistance to loosening under vibration. They are commonly used in automotive, machinery, and equipment manufacturing, as well as in repair and maintenance.

7. 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.

In summary, the Dolphin HSS Straight Flute Short Hand Tap set for BSF threads in larger sizes (1 inch to 4 inches) offers durable HSS taps for creating fine BSF threads in heavy-duty industrial applications. These taps are essential tools for workshops and manufacturing facilities requiring precise and reliable thread tapping capabilities in BSF thread sizes commonly used in larger diameter holes. If you have specific requirements or further questions, feel free to ask!