Description
Our Self-Tapping Screws are versatile fasteners designed to form their own mating threads when driven into pre-drilled holes. Available in a wide range of head styles, drive types, and materials, these screws are the go-to solution for sheet metal fabrication, plastic assembly, and general hardware repairs. The sharp cutting threads ensure a tight, secure fit across various substrates.
Decoding the Points: Type A vs AB vs B
This is the most confusing part for buyers. Help them choose correctly:
| Point Type | Tip Shape | Best For Substrate | Characteristic |
|---|---|---|---|
| Type A | Blunt / Tapered | Soft Metal, Wood, Plastic | General purpose, older standard. |
| Type AB | Sharp / Needle | Sheet Metal, Aluminum, Hard Plastic | Most Popular. Combines A and B benefits. |
| Type B | Blunt / Spaced | Plastics, Bakelite, Soft Metals | Less aggressive, prevents cracking in brittle materials. |
Material & Finish Guide
Selecting the right coating ensures longevity and prevents galvanic corrosion.
| Material / Finish | Tensile Strength | Corrosion Resistance | Best Application |
|---|---|---|---|
| C1022A Carbon Steel | High | Low | Interior appliances, electronics, dry environments. |
| Zinc Plated (Clear/Blue) | High | Moderate | General hardware, automotive interiors. |
| 410 Stainless Steel | Very High | Excellent | Outdoor electronics, marine hardware. |
| 304 Stainless Steel | Medium | Superior | Food equipment, medical devices, high acidity. |
Drive System Comparison
Preventing “Cam-Out” (stripping) is crucial for production lines.
| Drive Type | Torque Resistance | User Experience |
|---|---|---|
| Phillips | Medium | Common, but prone to slipping if misaligned. |
| Pozi (Pozidriv) | High | Better grip than Phillips, common in Europe. |
| Torx (Star) | Excellent | Recommended. Zero slippage, extends tool life. |
