stud

Stud is a term with several meanings across disciplines. In construction and carpentry, a stud is a vertical framing member that forms the core of a wall. Most commonly made of wood in residential construction, studs are about 1.5 inches by 3.5 inches in cross-section, and are spaced at regular intervals, typically 16 or 24 inches on center. They provide the structural framework to support loads, carry wall coverings, and anchor other elements such as door frames and electrical boxes, connected at top and bottom plates.

In fasteners, a stud is a threaded shaft that is used to fasten two parts together. Studs may extend from a component and be secured with nuts on one or both ends, or be threaded into a mating part. Studs are common in machinery, automotive, and construction hardware; they come in various lengths and thread pitches and may be cylindrical or hex-shaped for turning with tools.

In jewelry and personal adornment, a stud is a small, simple piece that sits on a post or backing. Ear studs and nose studs are common forms, typically featuring a single gemstone or metal ball. Studs are also decorative hardware on clothing or accessories, such as metal studs on jackets or belts.

In animal breeding, a stud refers to a male animal, especially a horse or dog, that is kept for breeding. A stud can be a stallion or sire used to sire offspring, and a facility that uses such animals is called a stud farm. The phrase standing at stud denotes a breeding arrangement where a male is available for mating to females on contract or fee.