About the Hole Feature
The Hole tool enables you to add simple, custom, and industry-standard holes to your models. You add holes by defining a placement reference, offset references, optional hole orientation references, and the specific characteristics of the hole. As you work, the system displays preview geometry of the hole. Notice that a hole always begins at the placement reference and extends to the specified depth. You can directly manipulate and define the hole in the graphics window and on the Hole tab.
You can create the following hole types:
• 
Simple—Consists of an extruded or revolved cut that is not directly associated with any industry standard. Creo provides a hole chart for simple flat and drilled holes, but not sketched holes. The chart includes parameters and the ability to create hole notes. You can create the following simple holes types:
Simple—Consists of an extruded or revolved cut that is not directly associated with any industry standard. Creo provides a hole chart for simple flat and drilled holes, but not sketched holes. The chart includes parameters and the ability to create hole notes. You can create the following simple holes types:◦ Flat rectangle profile—Uses (straight) geometry predefined by the system. By default, the system creates one-sided Simple holes. However, you can create two-sided simple straight holes by using the Shape tab. Two-sided simple holes are typically used in assemblies and enable you to simultaneously format both hole sides.
Flat rectangle profile—Uses (straight) geometry predefined by the system. By default, the system creates one-sided Simple holes. However, you can create two-sided simple straight holes by using the Shape tab. Two-sided simple holes are typically used in assemblies and enable you to simultaneously format both hole sides.◦ 
Drilled hole profile—Uses standard hole profile as drill hole profile. You can specify the countersink, counterbore, and tip angle for the holes.
Drilled hole profile—Uses standard hole profile as drill hole profile. You can specify the countersink, counterbore, and tip angle for the holes.◦ 
Sketched—Uses a sketch profile that you create in Sketcher.
Sketched—Uses a sketch profile that you create in Sketcher.• 
Standard—Consists of a revolved cut based on industry-standard fastener tables. Creo provides industry-standard hole charts and tapped or clearance diameters for the selected fastener. You can also create your own hole charts. The hole notes are automatically created for Standard holes. You can separate the hole axis from the hole thread surface and place the thread in a specified layer. You can create the following types of Standard holes:
Standard—Consists of a revolved cut based on industry-standard fastener tables. Creo provides industry-standard hole charts and tapped or clearance diameters for the selected fastener. You can also create your own hole charts. The hole notes are automatically created for Standard holes. You can separate the hole axis from the hole thread surface and place the thread in a specified layer. You can create the following types of Standard holes:◦ Straight
Straight▪ 
Tapped—Tapped hole
Tapped—Tapped hole▪ Drilled—Drilled hole
Drilled—Drilled hole▪ 
Clearance—Clearance hole
Clearance—Clearance hole◦ 
Tapered—Tapered hole
Tapered—Tapered holeHole Features vs Cut Features
Hole features are different from cut features in the following ways:
• Hole features use a predefined placement scheme that can be more desirable than the dimensioning scheme of the cut.
• Most holes do not require a sketch, unlike cut features.
Lightweight Representation
Hole features can take a lot of memory, especially if the model contains a large number of holes. To improve performance, you can use a lightweight representation of the hole.