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Self-Tapping vs Self-Drilling Screws: What are the Differences?
Easylink Technical Insights
Last Updated: May 14, 2026
Table of Contents
Self-Tapping vs Self-Drilling Screws: What are the Differences?
What are Self-Tapping Screws (STS)?
Characteristics of Self-Tapping Screws
Common Types and Point Styles
Common Uses
What to Know When Using Self-tapping Screws
What are Self-Drilling Screws (SDS)?
Characteristics of SDS
Typical Self-Drilling Screw (SDS) Point Size Table
Thread Types and Specialized Designs
Common Uses
What to Know When Using SDS
What are the differences between self-drilling and self-tapping screws?
Pilot Hole Requirement
Screw Tip Design
Efficiency
Material Capability
Error Reduction and Customization
Self-Tapping Screws vs Self-drilling Screws: Summary
How to Choose the Right Type of Screws
Torque and Installation Settings
Load-Bearing and Structural Requirements
Environmental Considerations
FAQs
1. Is self-tapping the same as self-drilling?
2. Do self-tapping screws always need a pilot hole?
3. When should I use self-drilling screws instead of self-tapping screws?
4. Can self-drilling screws be used on all materials?
5. What do the numbers (#1 to #5) on self-drilling screws mean?
6. Why do self-drilling screws create metal shavings?
7. Can I use self-tapping and self-drilling screws interchangeably?
Easylink is Your Trusted Self-Tapping and Self-Drilling Screw Manufacturer