ZHANGJIAGANG FLAME MACHINERY CO.,LTD.
| Process | Fully Ground |
| Hardness | HRC65-67 |
| Type | Twist Drill Bit |
| Shank | Hex shank |
| Size | 4-32 |
| Point angle | 135° degrees |
| Material | HSS-M35 |
| Surface | oxid |
| Name | hss cobalt Step drill bit |
| Use | ceramic materials |
| Payment Terms | T/T, L/C, D/P |
| Supply Ability | 400,0000Pcs Per Mouth |
| Delivery Time | 30-45days |
| Packaging Details | Plastic box,Double Blister card |
| Brand Name | XRTOOLS |
| Model Number | 4-32 |
| Certification | ISO9000 |
| Place of Origin | JIANG SU |
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Product Specification
| Process | Fully Ground | Hardness | HRC65-67 |
| Type | Twist Drill Bit | Shank | Hex shank |
| Size | 4-32 | Point angle | 135° degrees |
| Material | HSS-M35 | Surface | oxid |
| Name | hss cobalt Step drill bit | Use | ceramic materials |
| Payment Terms | T/T, L/C, D/P | Supply Ability | 400,0000Pcs Per Mouth |
| Delivery Time | 30-45days | Packaging Details | Plastic box,Double Blister card |
| Brand Name | XRTOOLS | Model Number | 4-32 |
| Certification | ISO9000 | Place of Origin | JIANG SU |
| High Light | M35 Cobalt Spiral Flute Step Drill Bit 4-32mm | Stainless Steel Aluminum ，Multi-Diameter M35 HSS Step Drill Bit | Spiral Flute Chip Evacuation ，5% Cobalt Step Drill Bit | Sheet Metal Plastic Panel Drilling | ||
The XRTOOLS M35 Spiral Step Drill Bit is a premium, high-speed steel tool engineered for multi-diameter hole drilling across a wide range of materials. Crafted from 5% cobalt alloyed HSS (M35) and featuring a precision spiral flute design, this bit offers smoother chip evacuation, less vibration, and longer tool life.
Whether you're drilling stainless steel (304/316), sheet metal, plastic panels, or aluminum plates, this step bit ensures clean, concentric holes with minimal burr. It eliminates the need to switch between multiple drill sizes.
HVAC installers: Drill into ducts, galvanized sheet, control boxes
Electricians: Enlarge knockout holes for conduit fittings
Auto mechanics: Drill chassis holes for sensors or mounts
DIY & workshop: Plastic drilling for models, shelves, electrical work
| Feature | Specification |
|---|---|
| Material | M35 High-Speed Steel (5% cobalt) |
| Flute Design | Spiral / Helical |
| Step Configuration | Multi-step, laser-etched sizes |
| Coating | Optional TiAlN / Black Oxide / Uncoated |
| Step Range | 4–12 mm / 4–20 mm / 4–32 mm (or Imperial) |
| Shank Type | 3-Flat / Hex / Round |
| Tip Geometry | 118° Split Point |
| Compatibility | Hand drills, presses, cordless tools |
1. Spiral Flute → Faster chip removal, quieter operation
2. Cobalt M35 Core → Handles high heat & hard metals
3.No Bit Change Needed → Multiple diameters in one tool
4.Clean Entry → Reduces material deformation or burr
5.Durable Coating → TiAlN for extended service life
Available Packaging
Single drill bit in retail blister card or clear tube
3-piece combo kits (4–12 / 4–20 / 4–32 mm)
OEM bulk packaging for distributors (10/25 pcs per box)
Custom logo & barcode options for private label brands
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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