Malco BT233G #2 Point 8-18 x 3/4" | Bit-Tip Drill & Tap Screws | 1/4" Slotted Hex Washer Head | HVAC Fastners | Structural & Layered Metal | Self Tapping and Self Drilling Sheet Metal Screws, 100 Bag
MPN: BT233G
Minimum order quantity is .
Meet the Malco BT233G Bit-Tip Drill & Tap Screws — the one-pass fastening solution built for HVAC and structural metal work. Designed to drill its own hole and tap threads in a single action, these screws deliver precise hole size, optimal thread engagement, and a tight, secure fit without the hassle of separate drill bits, taps, or welds.
The Bit-Tip advantage lies in its engineered point geometry. By drilling and tapping in one motion, you reduce alignment issues and speed up installation on ductwork, metal framing, and layered metal assemblies. The BT233G is formulated for a broad range of applications, extending beyond metal to fasten plywood, soft wood, composition board, drywall, insulation, and laminates to metal components. This versatility makes it a go-to choice for HVAC installers, sheet metal fabricators, and maintenance pros tackling mixed-material projects.
- One-pass drilling, tapping, and fastening — eliminates multi-step workflows and minimizes misalignment.
- Optimized Bit-Tip design — creates the ideal hole size for strong thread engagement and a durable hold.
- 1/4" Slotted Hex Washer Head — provides a flush, secure seating and improved load distribution in challenging metal surfaces.
- Structural & layered metal ready — ideal for HVAC fasteners, ductwork, metal framing, and other multi-layer metal assemblies.
- Self drilling and self tapping — reduces equipment needs, replacing rivets, nuts and bolts, spot welds, or adhesives.
- High-quality steel construction — precision cold-forged, heat-treated to maintain uniform dimensions and drill point contours for dependable performance.
- Tooling and depth control — compatible with a standard screw gun up to 2500 RPM and a drilling depth locator to prevent overdrilling.
- Convenient package — 100 screws per bag, ready to tackle larger HVAC and metal retrofit projects.
Why this matters: In metal-heavy installations, fasteners that self-drill and self-tap mean fewer steps, fewer tools, and fewer headaches. The BT233G delivers consistent thread engagement, reducing the risk of stripped holes and loose panels. It’s especially valuable when working with metal ductwork, ceiling grids, or layered metal assemblies where misalignment can derail a project.
Who should use it: HVAC technicians, metal framing installers, facility maintenance teams, and capable DIYers who regularly fasten metal to metal or to compatible layered materials. If you want reliable performance, fewer tools, and faster installations, the Malco BT233G is designed to deliver.
Practical tips:
- Set your depth locator to the desired fastener penetration to avoid overdriving.
- Match the Bit-Tip screw to the metal thickness you’re working with, using the point length as your guide for drilling and tapping capability.
- When fastening to composite or laminated surfaces, ensure the base metal is solid and clean for optimal bite.
Meet the Malco BT233G Bit-Tip Drill & Tap Screws — the one-pass fastening solution built for HVAC and structural metal work. Designed to drill its own hole and tap threads in a single action, these screws deliver precise hole size, optimal thread engagement, and a tight, secure fit without the hassle of separate drill bits, taps, or welds.
The Bit-Tip advantage lies in its engineered point geometry. By drilling and tapping in one motion, you reduce alignment issues and speed up installation on ductwork, metal framing, and layered metal assemblies. The BT233G is formulated for a broad range of applications, extending beyond metal to fasten plywood, soft wood, composition board, drywall, insulation, and laminates to metal components. This versatility makes it a go-to choice for HVAC installers, sheet metal fabricators, and maintenance pros tackling mixed-material projects.
- One-pass drilling, tapping, and fastening — eliminates multi-step workflows and minimizes misalignment.
- Optimized Bit-Tip design — creates the ideal hole size for strong thread engagement and a durable hold.
- 1/4" Slotted Hex Washer Head — provides a flush, secure seating and improved load distribution in challenging metal surfaces.
- Structural & layered metal ready — ideal for HVAC fasteners, ductwork, metal framing, and other multi-layer metal assemblies.
- Self drilling and self tapping — reduces equipment needs, replacing rivets, nuts and bolts, spot welds, or adhesives.
- High-quality steel construction — precision cold-forged, heat-treated to maintain uniform dimensions and drill point contours for dependable performance.
- Tooling and depth control — compatible with a standard screw gun up to 2500 RPM and a drilling depth locator to prevent overdrilling.
- Convenient package — 100 screws per bag, ready to tackle larger HVAC and metal retrofit projects.
Why this matters: In metal-heavy installations, fasteners that self-drill and self-tap mean fewer steps, fewer tools, and fewer headaches. The BT233G delivers consistent thread engagement, reducing the risk of stripped holes and loose panels. It’s especially valuable when working with metal ductwork, ceiling grids, or layered metal assemblies where misalignment can derail a project.
Who should use it: HVAC technicians, metal framing installers, facility maintenance teams, and capable DIYers who regularly fasten metal to metal or to compatible layered materials. If you want reliable performance, fewer tools, and faster installations, the Malco BT233G is designed to deliver.
Practical tips:
- Set your depth locator to the desired fastener penetration to avoid overdriving.
- Match the Bit-Tip screw to the metal thickness you’re working with, using the point length as your guide for drilling and tapping capability.
- When fastening to composite or laminated surfaces, ensure the base metal is solid and clean for optimal bite.
| Type |
Bulk |
|---|---|
| Length |
3/4 In. |
| Diameter |
8-18 |