Cup head shear bolt

Cold heading process is one of the new processes for pressure machining of less or no cutting
metal. It is a processing method that utilizes the plastic deformation of metal under the action of
external forces, and with the aid of molds, redistributes and transfers the volume of metal to form
the required parts or blanks. The cold heading process is most suitable for producing standard
fasteners such as bolts, screws, nuts, rivets, and pins.etc

Here’s a concise yet comprehensive overview of half-round head shear bolts, covering their design, function, and typical applications:

Half-Round Head Shear Bolts: Overview

Definition: A specialized fastener with a half-sphere (domed) head and shear-resistant shank, designed to withstand lateral forces while maintaining a low-profile, smooth surface.

Key Features:

Head Design:
- Semi-circular dome for reduced snagging and aerodynamics (common in aviation/automotive uses).
- Often includes slotted or Phillips drive for installation.
- Cup head shear bolt
Shear Resistance:
- Hardened shank resists snapping under lateral stress (e.g., in machinery or structural joints).
- May feature necked or unthreaded sections to control shear points.
Materials:
- Typically stainless steel, alloy steel, or titanium for corrosion/strength needs.
- Coatings (e.g., zinc, cadmium) for added durability.
- Cup head shear bolt

Common Uses:

Aerospace: Secure panels/access panels where flush surfaces are critical.
Automotive: Suspension components, brake systems.
Industrial Machinery: High-vibration environments.

Advantages:

Streamlined profile minimizes protrusion.
Balanced strength against shear and tensile loads.
Corrosion-resistant variants available.
Cup head shear bolt

Note: Often confused with “button head” bolts—half-round heads have a taller dome, while button heads are flatter.