Self-Tapping Screw — Sheet Metal & Plastic
Self-tapping screws cut their own thread in pre-drilled holes in metal, plastic, or wood. The point type determines the application: Type A and Type AB for thin sheet metal; Type B for thicker sheet; Type C (machine screw thread) for heavier sections.
Specifications
| Point Types | Type A (sharp gimlet), Type AB (sharp + machine thread), Type B (blunt), Type C (machine thread, blunt point) |
|---|---|
| Head Types | Pan, Hex washer, Countersunk, Truss, Round, Wafer |
| Drive Types | Phillips, Pozidriv, Slotted, Hex, Torx, Square |
| Diameter | #4 – #14 / M3 – M6.3 |
| Surface Finish | Zinc plated (most common), Yellow zinc, Black, Stainless |
Frequently Asked Questions
Type A vs Type AB self-tapping screws — what's the difference?
Type A has a coarse thread suited to thin sheet metal (typically up to about 1.6 mm). Type AB has a sharper point and a higher-performing thread design that combines features of Type A and Type B; it's increasingly the default for thin sheet metal applications. Type B has a blunt point and is for thicker sheet.
Need a quote on Self-Tapping Screw?
Send us your specifications, target quantity, and destination port. We will respond within 24 hours with sourceable options and indicative pricing.
Get a Quote