Drilling holes of the right size for taps is an important step in creating a successful threading project. When you get the sizing right, the tap will work correctly and the threading will be strong and secure. When it comes to drilling for a 1/4-inch tap, there are a few key things to keep in mind:

Tap Drill Size

The most important factor to consider when drilling a hole for a 1/4-inch tap is the tap drill size. This refers to the size of the hole that needs to be drilled to ensure that the threads of the tap fit properly and the threading is secure.

The tap drill size for a 1/4 inch tap is typically #7, which is 0.201 inches in diameter.

Drill Bit Size

In addition to the tap drill size, it is also important to consider the size of the drill bit that will be used to create the hole. For a 1/4 inch tap, the recommended drill bit size is typically a #7 drill bit. This is because a #7 drill bit is the closest to the tap drill size of 0.201 inches and will create a hole that is the right size for the tap to fit properly and securely.

Depth of Hole

The depth of the hole is also an important factor to consider when drilling for a 1/4-inch tap. The hole should be deep enough to accommodate the tap, but not so deep that it causes the tap to become stuck in the hole.

To ensure that the hole is at the right depth, it is recommended that the hole be drilled to a depth of two to three times the diameter of the tap.

Conclusion

Drilling holes of the right size for taps is essential for successful threading projects. When it comes to drilling for a 1/4 inch tap, the tap drill size is typically #7, which is 0.201 inches in diameter.

The recommended drill bit size for a 1/4 inch tap is a #7 drill bit and the hole should be drilled to a depth of two to three times the diameter of the tap. By following these guidelines, it is possible to create a secure and successful threading project.