Meet the Malco BT163T Bit-Tip self-drilling and self-tapping screw—engineered to turn complex metal assemblies into a simple, one-step fastening process. With a 12-14 x 3/4" profile and a 5/16" hex washer head, this screw is designed for HVAC fasteners and structural or layered metal applications, delivered in a bulk 500-pack for projects of every scale.

• One-pass fastening with optimal hole size: Bit-Tip drills its own hole as it taps, ensuring precise thread engagement and a tight, secure fit without misalignment or the need for separate drill bits or taps.
• Bit-Tip engineering for consistency: Precision cold-forged construction and a heat-treated steel composition deliver uniform drill point contours, promoting reliable performance across metal thicknesses.
• Versatile applications across materials: Beyond metal-to-metal, these screws can fasten to plywood, softwood, composition board, drywall, insulation, and laminates when attaching to metal framing or components.
• Eliminates extra hardware and steps: Replace rivets, nuts and bolts, spot welds, or adhesives with a single fastener—reducing tool needs and boosting job speed and consistency.
• Tool-ready and field-friendly: Requires only a standard screw gun rated up to 2500 RPM with a drilling depth locator, enabling fast, controlled driving without specialized equipment.
• Clear performance guidance: Point length determines the metal thickness you can drill, tap, and fasten in one operation, giving you predictable results on varied assemblies.
• Bulk convenience for professional workflows: The 500-pack format keeps your on-site supply steady, minimizing downtime on large HVAC and metal-building projects.

Designed for professionals who value efficiency, reliability, and clean, secure joins, the Malco BT163T Bit-Tip screws deliver repeatable results on structural and layered metal—from ductwork and framing to mounting hardware and beyond. If you’re upgrading riveted or bolted assemblies, or aiming to streamline installation timelines in HVAC and metal fabrication tasks, these self-drilling, self-tapping screws offer a practical, high-performance solution.