Jiangsu Xingrui Precision Tools Co., Ltd.
| Packing | bags+box+carton as your requirement |
| Packaging Details | Color paper box |
| Process | Edge Welded |
| Oem | Acceptable |
| Payment Terms | L/C, T/T, D/P, Western Union, MoneyGram |
| Type | Hole Saw |
| Name | hss bi metal hole saw |
| Delivery Time | 30-35 days |
| Supply Ability | 10000PCS PER DAY |
| Use | Plastic Plywood Ceiling Thin Metal |
| Material | M42 |
| Cutting depth | 38mm and 47mm |
| Body material | bimetallic material |
| Surface Finish | Color Painting |
| Brand Name | XRTOOLS |
| Place of Origin | CHINA |
| Model Number | 20 |
| Certification | ISO9000 |
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Product Specification
| Packing | bags+box+carton as your requirement | Packaging Details | Color paper box |
| Process | Edge Welded | Oem | Acceptable |
| Payment Terms | L/C, T/T, D/P, Western Union, MoneyGram | Type | Hole Saw |
| Name | hss bi metal hole saw | Delivery Time | 30-35 days |
| Supply Ability | 10000PCS PER DAY | Use | Plastic Plywood Ceiling Thin Metal |
| Material | M42 | Cutting depth | 38mm and 47mm |
| Body material | bimetallic material | Surface Finish | Color Painting |
| Brand Name | XRTOOLS | Place of Origin | CHINA |
| Model Number | 20 | Certification | ISO9000 |
| High Light | m42 bi metal hole saws ，m42 cobalt hole saw kit ，hss bi metal hole saws | ||
Engineered for industrial-grade performance, our 20mm M42 Cobalt Bi-Metal Hole Saw is the professional’s choice for precision boring. By integrating 8% Cobalt into the high-speed steel (HSS) teeth, this hole saw delivers exceptional "red-hardness," allowing it to cut through tough materials that would destroy standard bi-metal saws.
Whether you are drilling through thick 304 stainless steel sheets, aluminum, or structural steel, the M42 metallurgy ensures a cooler cut and a significantly longer tool life. The specialized variable pitch tooth design minimizes vibration and leaves a clean, burr-free finish.
| Feature | Specification Details | Industrial Advantage |
| Diameter | 20mm (approx. 25/32") | Perfect for M20 conduit and cable glands |
| Blade Material | HSS M42 (8% Cobalt) | Superior wear resistance in hard metals |
| Body Material | Alloy Spring Steel | High flexibility to prevent shattering |
| Teeth Design | 4/6 Variable Pitch TPI | Faster chip removal and smoother action |
| Cutting Depth | 38mm (1-1/2") | Deep enough for thick joists and panels |
| Arbor Required | Standard 1/2" or 3/8" Hex | Universal compatibility |
8% Cobalt (M42) Edge: * The Advantage: Cobalt creates a high resistance to heat and abrasion. This allows the 20mm saw to maintain its sharp edge even when the friction of metal-on-metal drilling generates extreme temperatures.
Variable Pitch Tooth Geometry:
The Advantage: The irregular spacing of the teeth (4/6 TPI) prevents the saw from finding a harmonic vibration frequency. This results in a much quieter, smoother cut and reduces the risk of the tool "grabbing" or stalling in the material.
Electron-Beam Laser Welding: * The Advantage: The HSS M42 cutting edge is permanently fused to the alloy steel body using vacuum electron-beam welding. This creates a flexible bond that allows the saw to absorb the shock of hitting a knot in wood or a hard spot in metal without the teeth stripping off.
Dual Side Slots (Ejection Slots):
The Advantage: Strategic slots on the side of the saw body facilitate rapid chip evacuation and provide easy access for a screwdriver to pop out the slug (core) after the cut is finished.
Electrical Installation: Perfect for creating entry points for M20 cable glands and conduit in metal junction boxes.
Stainless Steel Fabrication: Ideal for cutting holes in stainless steel countertops, sinks, and industrial control panels.
Plumbing: Drilling through copper, brass, and plastic pipes.
DIY & Construction: Creating clean holes in hardwood, plywood, and PVC for furniture or cable management.
Q: Can this 20mm saw cut through 3mm thick Stainless Steel?
A: Yes. Because of the M42 (8% Cobalt) content, it is designed for exactly this purpose. However, you must use a slow RPM and a high-quality cutting lubricant to prevent the material from work-hardening.
Q: What type of drill do I need?
A: A standard handheld power drill or a drill press is sufficient. For 20mm, a 10mm (3/8") chuck is the minimum size required for most standard arbors.
Q: How do I get the wood or metal core out of the saw?
A: Use the side ejection slots. Simply insert a flathead screwdriver into the slot and push the core out. The 20mm size is small, so the core can sometimes be snug—the slots make removal much faster.
Company Details
Business Type:
Manufacturer,Exporter,Trading Company
Year Established:
2008
Total Annual:
500-600
Employee Number:
30~50
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 YangZhou, Jiangsu Province—a major hub for cutting tool production with convenient transportation for global logistics. Main Products We special... Jiangsu Xing Rui Precision Tools Co., Ltd. is a leading manufacturer of high-quality cutting tools in China, established in 2008 and located in YangZhou, Jiangsu Province—a major hub for cutting tool production with convenient transportation for global logistics. Main Products We special...
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