Tapping Screws: Types, Uses, and How to Source Them from China
Tapping screws are essential fasteners used in various industries, from construction to electronics. These screws create their own threads when driven into materials like metal or plastic, eliminating the need for pre-drilled holes. This guide covers everything from types and features to sourcing tips from China.
How to Find Reliable Tapping Screws from China in 2025
Sourcing tapping screws from China requires careful vetting. Look for suppliers with certifications like ISO 9001 and a proven track record. Platforms like Alibaba offer verified manufacturers with customer reviews. Request samples to test quality before bulk orders.
What Buyers Should Know Before Buying Tapping Screws from China
Before purchasing, consider material (stainless steel, carbon steel), coating (zinc, nickel), and thread type. Verify lead times and MOQs (Minimum Order Quantities). Always check shipping terms and import duties to avoid hidden costs.
Types of Tapping Screws
1. Type A: Coarse threads for thin metals.
2. Type B: Fine threads for thicker materials.
3. Type C: Sharp threads for plastic.
4. Type F: Self-drilling for heavy-duty applications.
Functions and Features of Tapping Screws
These screws save time by eliminating the need for pre-tapping. Key features include:
- Self-threading design
- High tensile strength
- Corrosion-resistant coatings
- Wide head styles (pan, flat, hex)
Scenarios of Tapping Screws
Common uses include:
- Automotive assembly
- HVAC systems
- Electronics enclosures
- Furniture manufacturing
How to Choose Tapping Screws
Match the screw to your material:
- Metal: Type A or B
- Plastic: Type C
- Wood: Specialized variants
Consider load requirements and environmental conditions.
Tapping Screws Q & A
Q: What's the difference between tapping screws and regular screws?
A: Tapping screws create their own threads, while regular screws require pre-tapped holes.
Q: Can tapping screws be reused?
A: Generally no, as they may lose threading efficiency after removal.
Q: What coating lasts longest?
A: Zinc-nickel offers superior corrosion resistance.
Q: How do I prevent stripping?
A: Use the correct driver size and avoid over-tightening.
Q: What's the typical MOQ from Chinese suppliers?
A: Usually 1,000-5,000 pieces, but some accept smaller trial orders.
