1. Characteristics of a Stud: A
Stud is a cylindrical metal rod that
does not have a head. Instead, it is threaded at
both ends.
• One End: Screwed permanently into a tapped hole in one of the parts to be joined (often using a coarser thread).
• The Other End: Passes through a clearance hole in the second part and is secured with a nut.
2. Applications of Studs: Studs are typically used in heavy machinery, such as securing cylinder heads to engine blocks. They are preferred in situations where a bolt would be frequently removed, as removing a nut from a stud causes less wear to the internal threads of the main machine component than repeatedly removing a bolt.
3. Analyzing Other Fasteners:
• Through Bolt: Has a head at one end and a thread at the other. It passes completely through both parts and is secured with a nut.
• Tap Bolt: Has a head at one end and is threaded along its entire length. It is screwed directly into a tapped hole in the second part, requiring no nut.
• Set Screw: Usually fully threaded and used to prevent relative motion between two parts (like a pulley on a shaft). They often have no head (headless/grub screw) or a small square head.