Integrated Bi-Metal Hole Saw with Welded Hex Shank & Ejection Spring
SKU: NT-HLS-106
Est. 1998 · Unit 9F-H, East Building, Haijing Center, NO.144(M) Huangpu AVE, Guangzhou, China
One-piece integrated bi-metal hole saw featuring a permanently welded 1/4" or 3/8" hex shank, spring-loaded pilot bit, and zero arbor assembly hassle for fast cordless drilling.
| Design Type | 1-Piece Integrated Welded Shank |
|---|---|
| Shank | 1/4" or 3/8" Quick-Change Hex Shank |
| Tooth Material | HSS Bi-Metal with 4/6 TPI |
| Diameter Range | 16mm (5/8") – 76mm (5/8" – 3") |
| Ejection Mechanism | Spring-Loaded Pilot Drill Core Ejector |
| size | model | shank |
|---|---|---|
| 20mm (25/32") | NT-HLS-106-020 | 1/4" Hex |
| 25mm (1") | NT-HLS-106-025 | 1/4" Hex |
| 32mm (1-1/4") | NT-HLS-106-032 | 3/8" Hex |
| 50mm (2") | NT-HLS-106-050 | 3/8" Hex |
High-speed electrical box knockouts and lighting retrofits, Sheet metal enclosure penetrations in ventilation systems, On-site plumbing installation and maintenance
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 | model | shank | RFQ Requisition | |
|---|---|---|---|---|
| 20mm (25/32") | NT-HLS-106-020 | 1/4" Hex | ||
| 25mm (1") | NT-HLS-106-025 | 1/4" Hex | ||
| 32mm (1-1/4") | NT-HLS-106-032 | 3/8" Hex | ||
| 50mm (2") | NT-HLS-106-050 | 3/8" Hex |
High-speed electrical box knockouts and lighting retrofits, Sheet metal enclosure penetrations in ventilation systems, On-site plumbing installation and maintenance
One-piece integrated bi-metal hole saw featuring a permanently welded 1/4" or 3/8" hex shank, spring-loaded pilot bit, and zero arbor assembly hassle for fast cordless drilling.
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
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.
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.
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.
