Malco BT231#2 Point 8-18 x 1/2" | Bit-Tip Drill & Tap Screws | 1/4" Slotted Hex Washer Head | Structural & Layered Metal HVAC Fastners | Self Tapping & Self Drilling Sheet Metal Screws, 10,000 Count

Meet the Malco BT231 Bit-Tip Drill & Tap Screws — a game-changing one-step fastening solution designed to drill, tap, and secure metal in a single motion. Built for durability and precision, these screws deliver cleaner threads, tighter fits, and faster assemblies the moment you start turning the screw.

• One-operation fastening — Bit-Tip drives, drills, and taps in one motion, eliminating alignment headaches and reducing assembly time.
• Optimal hole size for strong threads — Bit-Tip geometry ensures the hole is sized for maximum thread engagement, giving you a tighter, more secure hold.
• Self drilling and self tapping — Skip separate drill bits, taps, rivets, nuts and bolts, spot welds, or adhesives. A single fastener can replace multiple tools and steps.
• Sturdy, consistent construction — Made from heat-treated steel and precision cold forged for uniform dimensions and drill point contours, the BT231 provides reliable performance project after project.
• 304-grade performance for HVAC and metalwork — Structural and layered metal HVAC fasteners that stand up to demanding metal framing, ductwork, and related applications.
• Specifications at a glance — 1/4" slotted hex washer head, thread size 8-18, length 1/2" (BT231 #2 Point, 8-18 x 1/2"), ready for standard screw guns up to 2500 RPM with a depth locator.
• Broad material compatibility — In addition to metal-to-metal fastening, these screws can secure plywood, softwood, composition board, drywall, insulation, and laminates to metal framing or components.
• Large value, ready for bulk use — 10,000-count box delivers supply for big jobs, shop upgrades, maintenance cycles, or ongoing HVAC projects.

Why choose Bit-Tip over traditional fastening methods? It minimizes equipment, lowers labor costs, and reduces error from misaligned holes or mismatched threads. Whether you’re installing metal ductwork, fastening lightweight panels, or assembling structural metal components, Bit-Tip screws help you move from start to finish with confidence.

Who this is for: Professional HVAC installers, metal fabricators, maintenance teams, and any shop or field crew seeking faster, cleaner metal fastening without sacrificing strength or durability.

Pro tips for best results: - Use a screw gun rated up to 2500 RPM with a depth locator to prevent over-penetration. - Match the Bit-Tip point (#2) to the metal thickness you’re fastening for optimal drilling and tapping performance. - Keep threaded surfaces clean and free of debris to maintain smooth driving and strong thread engagement.