What does countersunk mean?
Countersunk refers to a surface or hole that has been intentionally depressed or sunken to receive a screw head or other fitting. This term is commonly used in engineering and construction to describe a specific type of hole or depression. In a countersunk surface, the material is removed to create a concave shape, allowing for a smooth fit with the screw head or other fitting. Countersunk holes or surfaces are often used in applications where a secure and flush fit is required. The term countersunk is derived from the verb 'to countersink', which means to create a hole or depression in a surface. In addition to its use in engineering and construction, the term countersunk may also be used in other contexts, such as woodworking or metalworking.
adjectiveHaving a hole or depression in the surface, typically countersunk to receive a screw head or other fitting.
- Having a hole or depression in the surface, typically countersunk to receive a screw head or other fitting.
"The countersunk hole in the wood was designed to accommodate the screw head."
"The countersunk hole in the wood was designed to accommodate the screw head."
"The countersunk surface of the metal was perfect for the fitting."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of countersunk
The term countersunk is derived from the verb 'to countersink', which is a combination of the words 'counters' and 'sink'. The verb 'to countersink' has been in use since the 17th century, and it refers to the process of creating a hole or depression in a surface. The term countersunk has been in use since the 19th century, and it is a noun that refers to a surface or hole that has been intentionally depressed or sunken.
Usage notes
In engineering and construction, countersunk refers to a specific type of hole or depression. It is often used in conjunction with other terms, such as ' countersink' or ' countersink hole'.