Malco Zip-In Self-Piercing Screws | 5/16" Slotted Hex Washer Head Sheet Metal Screws | Type A Single Thread | Zinc Plated (25, #12 x 2")

Introducing Malco Zip-In Self-Piercing Screws, the fast, precise solution for metal-to-metal assemblies. Designed to bite through sheet metal with minimal effort, these drill-in screws combine a 5/16" slotted hex washer head with a Type A single-thread design to deliver quick, clean fastenings on the job site.

Why choose Zip-In Type A single-thread screws?

Single-thread efficiency means the screw engages quickly, driving straight and reducing cross-threading. The Type A single thread promotes faster penetration in metal, helping you finish projects sooner.

• 5/16" slotted hex washer head provides a large, easy-to-drive surface with secure seating and a neat finish.
• Zinc plated finish offers durable corrosion resistance in indoor or outdoor environments, from shop floors to exterior installations.
• Self-piercing design creates its own pilot path through sheet metal, reducing the need for pre-drilling and saving time on repetitive runs.
• Package details: 25 screws per pack, sized #12 x 2", ideal for quick repairs or small to mid-size projects.

Practical applications

These screws shine in metalworking and fabrication tasks where speed matters. Use them for HVAC duct work, metal roofing and siding, equipment enclosures, metal cabinets, and repair work that requires a strong, clean joint without pre-drilling. The 2" length is versatile for typical sheet metal gauges while maintaining a secure bite.

How to get the best results

• Match the screw length to your metal thickness; shorter lengths for thin gauge, longer lengths when you need more bite. The 2" length balances fast installation with holding power for most common sheet metal thicknesses.
• Use the appropriate driver bit for the slotted hex washer head to prevent cam-out and maintain torque.
• For projects needing more screws, consider longer lengths and multi-pack quantities offered by Malco.

When you need dependable fastening that drives cleanly through metal—without pre-drilling every time—Malco Zip-In Self-Piercing Screws deliver consistent, repeatable performance. Add these to your toolkit and experience faster assemblies, fewer steps, and a professional finish that lasts.