Features
- Durable construction for extended life
- Bi‑metal 8 TPI teeth suitable for sheet metal cutting
- Compatible with high‑torque impact drivers and standard drills
- Depth stop for controlling drilling depth
- Automatic plug ejection via pilot bit spring
- 1/4 inch hex shank
- Integrated one‑piece design without separate arbor or pilot bit
Specifications
| Teeth | Bi‑metal, 8 TPI |
| Shank | 1/4 inch hex |
| Working Length In | 0.375 |
| Pack Quantity | 1 |
| Design | One‑piece integrated hole saw (no separate arbor or pilot bit) |
| Compatibility | Drills and high‑torque impact drivers |
| Pilot Bit | Spring‑loaded pilot for plug ejection |
| Models | [{"model" => "HTW1", "diameter_in" => "1"}, {"model" => "HTW78", "diameter_in" => "0.875"}, {"model" => "HTW118", "diameter_in" => "1.125"}, {"model" => "HTW114", "diameter_in" => "1.25"}, {"model" => "HTW138", "diameter_in" => "1.375"}, {"model" => "HTW112", "diameter_in" => "1.5"}] |
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Hole saw intended for cutting sheet metal and similar materials. It has an integrated, one-piece construction with bi-metal teeth and a 1/4" hex shank so it can be used with drills and high-torque impact drivers. The design includes a depth stop and a spring-loaded pilot arrangement that aids in automatic plug ejection.
Project Ideas
Business
Mobile Cable Grommet Retrofits
Offer on‑site cable pass‑through installs in metal desks, cabinets, and AV racks. Cut clean 7/8–1.5 inch holes sized for standard grommets; the depth stop protects contents while the spring‑ejecting pilot accelerates repeat cuts.
Electrical Enclosure Knockout Service
Add or resize conduit knockouts in steel enclosures and junction boxes. The HTW78–HTW112 diameters align with common EMT and cord‑grip sizes, and the one‑piece design fits directly into impact drivers for overhead or ladder work.
HVAC/Duct Sensor & Tap Installs
Provide quick, clean penetrations in sheet‑metal ductwork for probes, sensors, and small taps. Bi‑metal 8 TPI teeth handle galvanized steel, while the depth stop prevents blade dive that could damage internal components.
Auto/Upfit Pass‑Throughs
Specialize in clean holes for wiring, cameras, lights, or antenna mounts in metal body panels and utility vehicle upfits. The compact hex‑shank hole saw works with high‑torque drivers for precise cuts in tight spaces; finish with grommets for a pro look.
Custom Perforated Panels Shop
Produce bespoke perforated metal panels for vents, decor, and retail displays. Use a drilling jig to batch consistent arrays, capitalize on automatic plug ejection to maintain throughput, and monetize both panels and painted disk offcuts as design elements.
Creative
Starlight Sheet-Metal Lanterns
Drill constellation and geometric patterns into thin steel or aluminum cans and tubes using multiple diameters (HTW78–HTW112). The depth stop keeps you from gouging a workbench, and the spring-loaded pilot kicks out clean disks you can glue inside as ‘stars’ for layered light effects.
Mid‑Century Wall Art Panels
Create repeating circular arrays in sheet metal to form retro wall art or room dividers. Arrange the ejected plugs into color‑painted mosaics or mobiles; the one‑piece design and impact‑driver compatibility make fast, accurate series drilling simple.
Wind Chimes and Rain Chains
Punch disks from scrap flashing, then use smaller cuts to make centered hanging holes for assembling chimes or rain chains. Bi‑metal teeth leave consistent edges; a quick deburr and you have tunable metal tones and weather‑resistant pieces.
Retro Speaker Grilles
Pattern 1–1.5 inch holes across thin sheet to craft custom speaker or radiator grilles with a classic look. The depth stop prevents over‑punching into frames, and the automatic plug ejection speeds production of uniform perforations.
Cable‑Pass Tin Sign Organizers
Upcycle vintage tin signs into wall‑mounted cable organizers by cutting 1–1.5 inch pass‑throughs and adding rubber grommets. The 1/4 inch hex shank works in a compact impact driver so you can mount and drill in tight spaces.