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Discover the Perfect Drill Size for Tapping 716 with Power Drills

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Written By John Gibbs

 

 

 

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Are you wondering what drill size is needed for tapping a 716 thread? You’ve come to the right place. In this article, we will discuss the drill size needed to use the tap 716 and the tips and tricks that you should keep in mind when working on this type of project. So, let’s dive right in and find out what drill size is needed for tap 716.

What is Tap 716?

What Is Tap 716?

Tap 716 is an American National Standard Pipe Thread (NPT) thread that is used to cut threads into the surface of a material. It is a type of threading process that is used to create a secure connection between two components. Tap 716 is commonly used in the manufacture of pipes and fittings, as well as in other applications where the need for a secure connection is necessary.

Tap 716 is an American National Standard Pipe Thread (NPT) that is composed of a series of male and female threads. The thread is identified by its major diameter of 7/16 inch (0.4375 inch or 11.11 mm) and its thread pitch of 18 threads per inch (TPI). This thread is typically used in the manufacture of pipes and fittings, as well as other applications that require a secure connection.

What Drill Bit is Needed for Tap 716?

The drill bit size required for Tap 716 depends on the material being tapped. Generally speaking, the recommended drill bit size for Tap 716 is a #7 drill bit (3/16 inch or 4.76 mm). For harder materials, a #9 drill bit (7/32 inch or 5.56 mm) is recommended for the best results.

  • Tap 716 is an American National Standard Pipe Thread (NPT) thread.
  • It is identified by its major diameter of 7/16 inch (0.4375 inch or 11.11 mm) and its thread pitch of 18 threads per inch (TPI).
  • It is commonly used in the manufacture of pipes and fittings, as well as in other applications.
  • The recommended drill bit size for Tap 716 is a #7 drill bit (3/16 inch or 4.76 mm).
  • For harder materials, a #9 drill bit (7/32 inch or 5.56 mm) is recommended for the best results.

In conclusion, Tap 716 is an American National Standard Pipe Thread (NPT) thread that is used to create a secure connection between two components. The drill bit size needed for Tap 716 depends on the material being tapped but generally, a #7 drill bit (3/16 inch or 4.76 mm) is recommended. For harder materials, a #9 drill bit (7/32 inch or 5.56 mm) should be used for the best results.

Factors Affecting Drill Size

Factors Affecting Drill Size

Pitch of Threads

The pitch of threads is the distance between adjacent threads and is measured in threads per inch (TPI). For a given tap size, the pitch determines the drill size required to form the threads.

Thread Major Diameter

The major diameter of a thread is the largest diameter of a thread. For a given tap size, the major diameter determines the size of the drill bit required to create the threads.

Thread Pitch Diameter

The pitch diameter of a thread is the diameter at which the thread is manufactured. It is the distance between the crests of the thread, and is used to determine the size of the drill bit required to create the threads.

Thread Minor Diameter

The minor diameter of a thread is the smallest diameter of a thread. It is used to determine the size of the drill bit required to create the threads for a given tap size.

For a tap 716, the drill size required is a #29 drill bit. This drill bit size is determined by the pitch, major diameter, pitch diameter, and minor diameter of the tap 716. The #29 drill bit size is suitable for creating threads in a variety of materials, including steel, aluminum, and plastic. It is important to ensure that the drill bit used is the correct size for the tap 716 to ensure a successful threading operation.

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What Drill Bit Size Is Recommended for Tap 716?

What Drill Bit Size Is Recommended For Tap 716?

  • Size: The recommended drill bit size for a Tap 716 is #7 Drill (0.201 inches or 5.1 mm).
  • Thread Type: Tap 716 is a Unified Thread Standard (UNS) thread.
  • Thread Form: It is a UNC (Unified Coarse Thread) type.
  • Thread Pitch: The thread pitch of Tap 716 is 16 threads per inch.
  • Thread Size: The nominal size of Tap 716 is 7/16 inch (0.437 inch or 11.1 mm).
  • Diameter: The outside diameter of Tap 716 is 0.502 inch (12.7 mm).

Tap 716 is a commonly used thread size for many applications. It is important to use the correct drill bit size for the tap to ensure proper thread engagement and to avoid damaging the tap. The recommended drill bit size for Tap 716 is #7 Drill (0.201 inches or 5.1 mm). This is the most commonly used drill bit size for this tap.

How to Choose the Right Drill Bit?

How To Choose The Right Drill Bit?

  • Check Thread Size: First you need to determine the thread size of the tap. 716 is for an American standard size tap, which is equivalent to 11/16-inch.
  • Drill Bit Size: For an 11/16-inch tap, you need to use a 13/16-inch drill bit. This size drill bit will create the correct opening size for the 11/16-inch tap.
  • Drill Bit Material: You should also choose the right material for your drill bit. High-speed steel drill bits are designed for drilling into metal, while carbide-tipped drill bits are better for drilling into wood and other materials.
  • Drill Bit Quality: You should also consider the quality of the drill bit when choosing the right one for your project. Low-quality drill bits will not last as long or create as accurate a hole as higher-quality drill bits.

Drill Bit Terminology

Drill Bit Terminology

  • Bit: The tool used to create a hole in materials.
  • Flute: The grooves cut into the bit that allow it to cut through material.
  • Cutter: The cutting edge of the bit that is responsible for removing material.
  • Shank: The part of the bit that fits into the drill.
  • Chuck: The clamping mechanism used to secure the bit in the drill.
  • Point Angle: The angle of the tip of the bit which affects the speed of drilling.
  • Web: The thin walls of the bit that support the cutting edge.
  • Helix: The spiral shape of the flutes that guide the bit through the material.

These are the basic drill bit terms used to determine the size and type of drill bit needed for a particular job. Understanding these terms is essential for selecting the correct bit for any drilling application.

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Drill Bit Materials

Drill Bit Materials

Drill bits are commonly made from high-speed steel (HSS) or carbide. HSS is a strong and durable material, but carbide is even stronger and more heat-resistant. For taps of size 716, HSS is sufficient, but carbide may be needed for harder materials such as stainless steel or aluminum. It is important to select the right drill bit material to ensure the hole is accurately machined.

How to Select the Correct Drill Bit for Tap 716?

  • Drill Bits: When selecting a drill bit for tap 716, the most important factor to consider is the size and type of drill bit. The right size bit will ensure the tap will fit securely in the hole.
  • Tap Material: Tap 716 is typically made from high-speed steel, although some are made from cobalt steel for extra durability. Depending on the type of material being drilled, it’s important to choose the correct type of drill bit for the job.
  • Drill Size: In most cases, the drill bit should be slightly larger than the tap size. For tap 716, a 7/16-inch drill bit should be used.
  • Chamfer: It is also important to select a drill bit that has a chamfer. This will help the tap start properly and ensure there is no damage to the tap.
  • Flutes: When selecting a drill bit, it is also important to consider the number of flutes. The more flutes the drill bit has, the easier it will be to cut into the material. For tap 716, a 4-flute drill bit is recommended.
  • Speed: Finally, it is important to select a drill bit that is designed for the correct speed for the material being drilled. This will help ensure the drill bit lasts longer and that the hole is cut accurately.

Frequently Asked Questions

What is a Tap?

A tap is a cutting tool used to create a thread on the inner surface of a hole. It is usually made from hardened steel and is available in a variety of sizes and pitches. The size of the tap is determined by the drill size needed to create the desired thread size.

What is the Best Way to Determine the Size of the Drill Bit Needed?

The best way to determine the size of the drill bit needed is to consult a tap and drill chart. This chart indicates the size of the drill bit that should be used for a particular tap size. Additionally, a drill bit size calculator can be used to work out the correct drill bit size. It is important to use the correct drill bit size to ensure that the hole is correctly tapped and to prevent damage to the material being worked on.

What other drills and taps are available for the same size tap?

  • Bottoming tap: This type of tap is designed to cut threads all the way to the bottom of a hole. It is commonly used for cutting internal threads in a blind hole.
  • Plug tap: A plug tap has a slightly tapered cutting edge. It is used to cut threads in a through hole and is the most commonly used type of tap.
  • Taper tap: This type of tap has a steeper taper than a plug tap and is used for cutting threads in a through hole.
  • Spiral point tap: This type of tap is designed for cutting threads in a through hole. It has a spiral point which helps to push chips away from the cutting edge.
  • Form tap: A form tap is designed to cut threads with a specific shape. It is commonly used for cutting internal threads in a blind hole.

What type of materials are typically used with tap 716?

  • Steel – Steel is the most common material used with tap 716, as it is strong, durable and resistant to most types of corrosion.
  • Aluminum – Aluminum is lightweight, yet still strong and resistant to corrosion. It can be used for a variety of applications when a tap 716 is needed.
  • Brick – Brick is strong and durable and can be used when drilling into concrete or stone surfaces.
  • Wood – Wood is not as strong as metal but is still suitable for use with tap 716 when the right type of wood is chosen.
  • Plastic – Plastic is lightweight and can be used when a strong, yet lightweight material is needed.

What is the difference between a drill bit and a tap?

  • Drill Bits are designed to cut a hole into a material, while Taps are designed to cut threads into a hole.
  • Drill Bits are made from high speed steel, while Taps are made from carbon steel.
  • Drill Bits come in various shapes and sizes, while Taps come in specific sizes and types.
  • Drill Bits are used to bore a hole, while Taps are used to create a female thread in an existing hole.
  • Drill Bits rotate in clockwise direction, while Taps rotate in counter-clockwise direction.

Conclusion

Tap 716 requires a 13/16-inch drill bit. It is important to note that the size of the drill bit should be slightly larger than the size of the tap, as the tap needs room to cut threads into the material. Using a drill bit size that is too small can cause the tap to break or strip the threads.

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About John Gibbs

Hello everyone! My name is John Gibbs. I am 60 years old and have been in the family construction business all my adult life. Construction is not only my profession but also my passion. I know everything about building and repair materials, tools, advanced methods, techniques, and approaches. I will share the same knowledge with you in my articles.

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