In basic manufacturing and fastener selection: which fastening device has a formed head at one end and accepts a nut on the threaded other end to clamp components together?

Introduction:
Fasteners are fundamental elements in mechanical design. Recognizing the geometry and usage of bolts, studs, and screws is essential for proper assembly, maintenance, and load-path design. This question checks the ability to identify the device characterized by a head at one end and threads on the other to receive a nut, thereby clamping parts through a pre-drilled hole.

Given Data / Assumptions:

• The device must have a head on one side.
• The opposite end is threaded to accept a nut.
• Purpose: to clamp separate components with a through-hole.

Concept / Approach:
A bolt is a headed, externally threaded fastener designed to be used with a nut. The head (hex, socket, or other) provides a driving feature and bearing surface. A nut on the far side provides the clamping force when tightened, generating preload via thread engagement. In contrast, a stud is headless, threaded on both ends (or fully threaded), and is installed into a tapped hole with a nut used on the free end.

Step-by-Step Solution:
Identify the defining features: head + nut usage.Map features to fastener types: bolt matches; stud lacks a head.Select 'Bolt' as the correct classification.

Verification / Alternative check:
Standards (e.g., ISO/ASME) define a bolt as a headed fastener used with a nut; a screw is typically used with a tapped hole and may or may not be used with a nut, depending on design.

Why Other Options Are Wrong:

• Stud: No head; used with nuts on one or both ends.
• Top bolt: Not a standard, specific fastener category.
• None of these: Incorrect, as bolt fits perfectly.
• Set screw: Headless or small head; used to secure one component against another via a tapped hole, not with a nut through a clearance hole.

Common Pitfalls:
Confusing bolts and screws purely by thread form; the intended application (nut vs tapped hole) and presence of a head are the key identifiers.

Final Answer:
Bolt