M42 8% Cobalt Bi-Metal Variable-Pitch (4/6 TPI) Heavy-Duty Hole Saw
SKU: NT-HLS-101
Est. 1998 · Unit 9F-H, East Building, Haijing Center, NO.144(M) Huangpu AVE, Guangzhou, China
Industrial M42 bi-metal hole saw with 8% cobalt electron-beam welded tooth edge and 4/6 variable pitch geometry for fast cutting in stainless steel, cast iron, and wood.
| Tooth Material | M42 HSS (8% Cobalt) Electron-Beam Welded |
|---|---|
| Body Material | Alloy Spring Steel Backing |
| Tooth Geometry | 4/6 TPI Variable Pitch with Positive Rake |
| Cutting Depth | 38mm (1-1/2") & 44mm (1-3/4") |
| Thread Mount | 1/2"-20 (14–30mm (1-3/16")) & 5/8"-18 (32–210mm (8.27")) |
| size | depth | model | thread |
|---|---|---|---|
| 22mm (7/8") | 38mm (1-1/2") | NT-HLS-101-022 | 1/2"-20 |
| 35mm (1-3/8") | 38mm (1-1/2") | NT-HLS-101-035 | 5/8"-18 |
| 51mm (2") | 38mm (1-1/2") | NT-HLS-101-051 | 5/8"-18 |
| 76mm (3") | 38mm (1-1/2") | NT-HLS-101-076 | 5/8"-18 |
| 102mm (4") | 38mm (1-1/2") | NT-HLS-101-102 | 5/8"-18 |
Stainless steel sheet 304/316, structural carbon steel, and pipework, Cast iron, brass, bronze, aluminum, and sheet metal fabrication, Wood, plastic composites, PVC pipes, and fiberglass panels
Process-by-requirement custom OEM/ODM manufacturing confirmed against buyer drawings prior to production.
Select individual or multiple dimensional models below to append directly to your B2B RFQ requisition.
| size | depth | model | thread | RFQ Requisition | |
|---|---|---|---|---|---|
| 22mm (7/8") | 38mm (1-1/2") | NT-HLS-101-022 | 1/2"-20 | ||
| 35mm (1-3/8") | 38mm (1-1/2") | NT-HLS-101-035 | 5/8"-18 | ||
| 51mm (2") | 38mm (1-1/2") | NT-HLS-101-051 | 5/8"-18 | ||
| 76mm (3") | 38mm (1-1/2") | NT-HLS-101-076 | 5/8"-18 | ||
| 102mm (4") | 38mm (1-1/2") | NT-HLS-101-102 | 5/8"-18 |
Stainless steel sheet 304/316, structural carbon steel, and pipework, Cast iron, brass, bronze, aluminum, and sheet metal fabrication, Wood, plastic composites, PVC pipes, and fiberglass panels
Industrial M42 bi-metal hole saw with 8% cobalt electron-beam welded tooth edge and 4/6 variable pitch geometry for fast cutting in stainless steel, cast iron, and wood.
Manufacturing processes and technical parameters are tailored according to customer requirements. Tell us your target material, dimensions, drawings, and order quantity, and we configure the construction, bond/alloy grade, and finishing to match.
We support flexible FOB and CIF delivery at any port in China (including Guangzhou, Shenzhen, Ningbo, Shanghai, Qingdao, Tianjin, and Xiamen) with 100% pre-shipment inspection before dispatch.
Yes. Custom laser marking, color finishes, private-label retail or industrial packaging, and barcode labeling are agreed with you before production.
Cross-Referenced Tooling
Complete 9-piece contractor set containing 6 essential M42 bi-metal hole saws (19mm–57mm / 3/4"–2-1/4"), two quick-lock arbors, and thread adapter in a heavy blow-mold case.
Specialized shallow-depth sheet metal hole saw with safety flange stop collar to prevent over-penetration into electrical wiring and internal components behind metal panels.
Heavy-duty hole saw arbor mandrels featuring hardened alloy steel drive pins, 1/2"-20 & 5/8"-18 threads, and premium HSS center pilot drills for slip-free power transmission.
Extended-life knotted wire cup brush equipped with a metal bridle band that controls wire flare; remove the bridle ring once wire wears down to expose a fresh cutting zone.
