Gavalnised White Carbon Steel Shoulder Metal Bolts Phillips slotted Metal bolts

Purpose and Applications

A shoulder bolt, also referred to as a shoulder screw or stripper bolt, is a specialized fastener designed for applications requiring precision, alignment, and controlled movement. Its unique design distinguishes it from standard bolts, making it a critical component in machinery, automation, and mechanical systems. Below is an in-depth explanation of its purpose, features, and uses.

Design and Features

A shoulder bolt is characterized by its three-part structure:

1. Head: Typically designed for tool engagement, such as a hex head or socket head, to allow for easy installation and removal.

2. Shoulder (Unthreaded Section): A smooth, cylindrical shank with a precise diameter, larger than the threaded portion. This section acts as a bearing surface or spacer.

3. Threaded End: A smaller-diameter threaded section that secures the bolt into a tapped hole or nut.

The shoulder’s length and diameter can be customized to meet specific mechanical requirements, making it adaptable to a wide range of applications.

Primary Functions

1. Precision Alignment and Spacing

The shoulder bolt’s unthreaded shank ensures accurate alignment of components, such as gears, pulleys, or levers, by maintaining a consistent axis of rotation. It also acts as a spacer, controlling the distance between parts to prevent interference or misalignment. This is particularly important in assemblies like automotive transmissions or industrial machinery.

2. Rotational Movement and Pivoting

The smooth shoulder provides a low-friction surface for rotating or pivoting parts, such as hinges, linkages, or bearings. Unlike fully threaded bolts, the shoulder eliminates contact between threads and moving components, reducing wear and ensuring smooth operation. This function is essential in robotics, conveyor systems, and other dynamic applications.

3. Load Distribution and Strength

The shoulder’s larger diameter distributes shear and axial loads over a broader area, reducing stress concentrations and preventing deformation of softer materials like plastic or aluminum. This enhances the durability of the assembly, particularly in high-load environments such as injection molding or heavy machinery.

Stainless Steel:
1, the basic knowledge of stainless steel
Stainless steel is an alloy material with corrosion resistance, and its main components are an alloy of elements such as iron, chromium and nickel. These elements can effectively resist oxidation and corrosion, so that stainless steel has a high degree of durability and aesthetics.
2, stainless steel maintenance methods
Cleaning
Keeping stainless steel products clean is an important part of their maintenance. You can use mild detergents and soft cloth for cleaning, avoid the use of detergents containing acidic and alkaline components, so as not to damage the surface of stainless steel. When removing dirt, you should try to avoid using irritating cleaning tools to avoid scratching the stainless steel surface. After cleaning, rinse with water and dry with a clean soft cloth.
3, the use of stain remover
For some stubborn dirt, you can use special stainless steel stain remover for cleaning. But before using it, you should carefully read and follow the instructions in the product manual. In addition, stainless steel products on the dirt can be cleaned with alcohol or vinegar, these common cleaners on stainless steel has a certain decontamination effect.
Steel types: