Tap Drill Sizes: A Comprehensive Guide to 14-20 Taps
When it comes to tapping holes, selecting the right tap drill size is crucial to ensure a successful and efficient process. In this article, we will delve into the world of tap drill sizes, specifically focusing on the 14-20 tap drill size range.
What is a Tap Drill?
A tap drill is a specialized drill bit designed to create a hole for a specific type of fastener, such as a screw or bolt. Tap drills are typically used in conjunction with a tap, which is a tool used to cut threads on the inside of a hole.
Why is Tap Drill Size Important?
Choosing the correct tap drill size is essential because it directly affects the quality of the threaded hole and the fastening process. A tap drill that is too small can result in a weak or stripped thread, while a tap drill that is too large can lead to a loose fit.
Tap Drill Sizes 14-20: What You Need to Know
The 14-20 tap drill size range is commonly used for a variety of fastening applications. Here's a breakdown of each size:
14 Tap Drill Size
- Used for 1/4-20 threads
- Drill diameter: 0.182 inches (4.62 mm)
- Suitable for general-purpose fastening applications
15 Tap Drill Size
- Used for 5/16-18 threads
- Drill diameter: 0.205 inches (5.21 mm)
- Ideal for heavy-duty fastening applications
16 Tap Drill Size
- Used for 3/8-16 threads
- Drill diameter: 0.228 inches (5.79 mm)
- Suitable for high-torque fastening applications
17 Tap Drill Size
- Used for 7/16-14 threads
- Drill diameter: 0.252 inches (6.4 mm)
- Ideal for heavy-duty, high-stress fastening applications
18 Tap Drill Size
- Used for 1/2-13 threads
- Drill diameter: 0.276 inches (7.01 mm)
- Suitable for heavy-duty, high-torque fastening applications
19 Tap Drill Size
- Used for 9/16-12 threads
- Drill diameter: 0.301 inches (7.65 mm)
- Ideal for extreme-duty fastening applications
20 Tap Drill Size
- Used for 5/8-11 threads
- Drill diameter: 0.327 inches (8.31 mm)
- Suitable for extreme-duty, high-stress fastening applications
Conclusion
In conclusion, selecting the correct tap drill size is crucial for achieving a successful fastening process. By understanding the 14-20 tap drill size range, you can ensure that your threaded holes are strong, reliable, and efficient. Always refer to the manufacturer's recommendations and take into account the specific fastening application to choose the right tap drill size.
