Extending Hole Types
When drilling a hole into a material, many options exist for the type of hole that can be produced. Common to most commonly found hole types such as countersunk, reamed and countersunk holes are the basics, but there are several more hole types that can extend the application of the hole. This article will discuss the various extending hole types used in industrial manufacturing.
Countersunk holes are arguably the most common type of hole and are used to create flush surfaces. The countersink creates a slightly cone-shaped capture area and this allows the head of the screw or bolt to be inserted and tightened. The screw can then be tightened up to the surface, ensuring a tight, secure fit. Countersunk holes are commonly used in both industrial and home applications.
Reamed holes are typically used to create clearance around the center point of the hole. The reamer is inserted into the existing hole, allowing it to convert the hole from circular to oval. A reaming tool can be used to produce holes with precision diameters and depths. The hole size can be precisely controlled with the use of a reamer. Reaming is also used to create tapered holes in order to create a good fit for specific parts.
Countersink holes are also quite common and are used to create a shallow hole. The hole is drilled at an angle so that the head of the screw or bolt is flush with the surface. This type of hole is commonly used in the automotive and aerospace industries, as the low profile allows components to fit into tight spaces. Countersinking also eliminates the need for a washer, which saves time and labor.
Bungnut holes are a unique type of hole that can be produced with a specialized jig. A bungnut hole creates a rounded recess that is used to secure a nut, creating a tight grip and preventing it from loosening. This type of hole is common in the aerospace, defense and metal fabrication industries, as they are essential components in aircraft and spacecraft. The jig creates a precise shape, ensuring that the nut stays securely in place without the need for additional locking mechanisms.
Flat-bottom holes are another extending hole type that is commonly used in industrial manufacturing. This type of hole is often used to create a flat, even base on a machined part. Flat-bottom holes are used to seat dowels, pins or other embedded components. This precision hole allows for a precise fit, which creates a stronger joint than a standard hole.
These are just a few of the common extending hole types used in industrial manufacturing. Each type has its own specific advantages, and it is important to determine the right kind of hole for the application. Different materials, and the type of component being mounted, will require a different type of hole. Choosing the right one can save time and money, and ensure that the job is done correctly the first time.
