ZHANGJIAGANG FLAME MACHINERY CO.,LTD.
| Shank | Triangle Shank / Hex shank,Three-flat shank |
| Payment Terms | L/C, T/T, D/P, Western Union, MoneyGram |
| Supply Ability | 10000PCS PER DAY |
| Delivery Time | 30-35 days |
| Packaging Details | Color paper box |
| Body material | bimetallic material |
| Use | Plastic Plywood Ceiling Thin Metal |
| Diameter | 33mm |
| Oem | Acceptable |
| Type | Hole Saw |
| Surface Finish | Color Painting |
| Material | HIGH SPEED STEEL,M42 |
| Cutting depth | 38mm |
| Name | hss bi metal hole saw |
| Brand Name | XRTOOLS |
| Certification | ISO9000 |
| Place of Origin | CHINA |
| Model Number | 33 |
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Product Specification
| Shank | Triangle Shank / Hex shank,Three-flat shank | Payment Terms | L/C, T/T, D/P, Western Union, MoneyGram |
| Supply Ability | 10000PCS PER DAY | Delivery Time | 30-35 days |
| Packaging Details | Color paper box | Body material | bimetallic material |
| Use | Plastic Plywood Ceiling Thin Metal | Diameter | 33mm |
| Oem | Acceptable | Type | Hole Saw |
| Surface Finish | Color Painting | Material | HIGH SPEED STEEL,M42 |
| Cutting depth | 38mm | Name | hss bi metal hole saw |
| Brand Name | XRTOOLS | Certification | ISO9000 |
| Place of Origin | CHINA | Model Number | 33 |
| High Light | m42 bi metal hole saws ，m42 cobalt hole saw kit ，hss bi metal hole saws | ||
When standard bi-metal saws hit their limit, our 33mm M42 Cobalt Series is just getting started. Featuring a certified 8% Cobalt edge, this hole saw is engineered for high-friction environments where heat would normally destroy the tool's cutting edge.
Specifically optimized for 1-1/4" conduit installations and industrial pipe routing, this 33mm cutter provides a cleaner, faster, and more controlled boring experience in everything from 304 Stainless Steel to abrasive fiber-cement boards.
| Dimension | The M42 Cobalt Standard | Performance Benefit |
| Material Science | HSS M42 (8% Co Content) | 3X Life Cycle: Maintains sharp teeth even at 1200°F (650°C). |
| Geometric Accuracy | Fully Ground Variable Teeth (4/6 TPI) | Zero Chatter: Prevents harmonic resonance for a perfectly round 33mm hole. |
| Mechanical Bond | Vacuum Electron-Beam Welding | Anti-Stripping: The HSS edge is fused to the body for extreme torque loads. |
| Efficiency | Dual-Angle Side Ejection Windows | Fast Plug Removal: Prevents "slug" jamming and facilitates cooling. |
| Depth Capacity | Heavy-Duty 38mm (1-1/2") Throat | Deep Boring: Cuts through subfloors and heavy-gauge plate in one pass. |
Red-Hardness Technology: Most M3 saws "anneal" (soften) as soon as they hit a metal stud. Our M42 Cobalt formula creates a secondary hardness that resists heat-softening. For the 33mm diameter, which moves at a higher peripheral speed, this heat resistance is the difference between one hole and fifty holes.
Non-Harmonic Tooth Spacing: Standard saws often "grab" or bounce, leaving jagged edges. Our 4/6 TPI Variable Pitch uses alternating tooth heights and gullet depths to cancel out vibration. This is critical for 33mm holes where a snug, professional fit is required for gaskets and glands.
Industrial Heat-Shield Coating: The surface is treated with a friction-reducing industrial coating. This prevents the "buildup" of material (like aluminum or wood resin) on the tooth face, ensuring the saw continues to cut instead of rubbing.
Industrial Electrical: Creating entry points for 1-1/4" conduit in galvanized steel control boxes.
Commercial Kitchen Installation: Precision holes in 304/316 Stainless Steel countertops and sinks.
Structural Engineering: Drilling through high-tensile metal studs and aluminum frameworks.
Cabinetry & Joinery: Perfect for large cable grommet paths in high-density MDF and hardwood.
Q: Why is 33mm better than 32mm for my installation?
A: In many industrial applications, a 33mm hole provides the perfect "clearance fit" for 32mm (1-1/4") pipes or conduit, allowing for easy insertion without compromising structural integrity.
Q: Can I use this for dry cutting in thick iron?
A: M42 can handle high heat, but for 33mm holes in iron or steel, we recommend a low RPM (110-125 RPM) and a drop of cutting oil. This ensures the best finish and maximum tool life.
Q: Will the teeth break if I hit a nail in wood?
A: No. The Electron-Beam Welding ensures the HSS teeth are flexible enough to absorb the impact of a nail rather than snapping off.
Company Details
Business Type:
Manufacturer,Exporter,Trading Company
Year Established:
2018
Total Annual:
500-600
Employee Number:
135~150
Ecer Certification：
Verified Supplier
Jiangsu Xing Rui Precision Tools Co., Ltd. is a leading manufacturer of high-quality cutting tools in China, established in 2008 and located in Danyang, Jiangsu Province—a major hub for cutting tool production with convenient transportation for global logistics. Main Products We speciali... Jiangsu Xing Rui Precision Tools Co., Ltd. is a leading manufacturer of high-quality cutting tools in China, established in 2008 and located in Danyang, Jiangsu Province—a major hub for cutting tool production with convenient transportation for global logistics. Main Products We speciali...
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