Square Step Screws

Square Step Screws–High-Strength Square Shoulder Screws for Electrical Applications

What Is a Square Step Screw?

A Square Step Screw,also known as a Square Stepped Screw or Square Shoulder Screw,is a precision fastener designed with a square shoulder section between the head and the threaded part.This unique step structure provides accurate positioning,strong shear resistance,and improved load distribution during assembly.

Unlike standard screws,Square Step Screws are commonly used where precise alignment,anti-rotation performance,and mechanical stability are critical.In electrical appliances,they often serve as locating screws,support shafts,or functional connectors for moving or load-bearing components.

Manufacturing Process&Working Principle

Our Square Step Screws(ALSB0810004)are manufactured using a controlled,multi-step process to ensure consistent performance and dimensional accuracy:

1.Raw Material Selection

High-quality SCM435 alloy steel is selected for its excellent tensile strength and fatigue resistance.

2.Cold Forging/Precision Machining

The square shoulder and stepped structure are formed with tight tolerances to guarantee accurate positioning during installation.

3.Thread Rolling

Threads are rolled rather than cut,increasing surface hardness and improving fatigue life.

4.Heat Treatment

Quenching and tempering processes optimize mechanical properties,ensuring strength without brittleness.

5.Surface Treatment

An environmentally friendly natural zinc-nickel alloy coating is applied to enhance corrosion resistance and meet international environmental standards.

The square shoulder acts as a mechanical stop and alignment guide,preventing rotation and reducing wear on surrounding components.

Product Parameters

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