ZHANGJIAGANG FLAME MACHINERY CO.,LTD.
| Hardness | HRC65-67 |
| Name | Cobalt Center Drill Bits |
| Material | M35 |
| Type | Twist bits |
| Surface | coffee |
| 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 |
| Size | 1/8 |
| Use | ceramic materials |
| Oem | Available |
| Process | Ti-coated,Black Oxide,Bright finished |
| POINT: | 118 Split Point |
| Brand Name | XRTOOLS |
| Model Number | 1/8 |
| Certification | ISO9000 |
| Place of Origin | JIANG SU |
View Detail Information
Explore similar products
DIN338 Straight Shank Fully ground drill bit Amber finished,M35 Twist Drill Bits
Black And Amber Finish HSS Drill Bit For Metal ，Fully Ground Hss Cobalt Drill
Coffee 9.0mm HSS Twist Drill Bit HRC65-67 ，M35 Hss Drill Bits For Steel
M35 High Speed Twist Drill Bit ，5mm-10mm Metal Drill Bit For Stainless Steel
Product Specification
| Hardness | HRC65-67 | Name | Cobalt Center Drill Bits |
| Material | M35 | Type | Twist bits |
| Surface | coffee | 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 | Size | 1/8 |
| Use | ceramic materials | Oem | Available |
| Process | Ti-coated,Black Oxide,Bright finished | POINT: | 118 Split Point |
| Brand Name | XRTOOLS | Model Number | 1/8 |
| Certification | ISO9000 | Place of Origin | JIANG SU |
| High Light | TiAlN Coated HSS Drill Bit ，M35 hss cutting tool ，Stainless Alloy hss center drill | ||
TiAlN Coated Center Drill Bit Set – M35 Cobalt HSS for Stainless, Alloy & Carbon Steel
XRTOOLS presents a professional-grade Center Drill Bit Set designed for industrial drilling precision, heat resistance, and long-term use in high-volume operations. Manufactured from M35 cobalt high-speed steel, these drills offer exceptional hardness and red-hot strength, while the TiAlN (Titanium Aluminum Nitride) coating improves wear resistance and supports dry machining.
Whether you're a wholesaler, tool supplier, or OEM partner, this set is optimized for bulk use, industrial performance, and private label flexibility.
Industrial M35 Cobalt Steel: 5% cobalt ensures thermal stability and longer edge retention under heavy-duty operations.
TiAlN Nano-Coating: Allows faster cutting speeds and improved wear resistance in stainless steel and alloy materials.
DIN333 Standard Geometry: Straight flute with accurate point angles (60° / 82° / 90°), suitable for all centering and spotting tasks.
Professional Tolerances: Minimizes walking or misalignment, especially on curved or hard surfaces.
Ready for CNC or Manual Use: Works with both conventional lathes and automated systems.
| Feature | Details |
|---|---|
| Material | M35 High-Speed Steel with 5% Cobalt (HSS-Co) |
| Coating | TiAlN (Titanium Aluminum Nitride) – heat resistant up to 800°C |
| Point Angles | 60°, 82°, 90° |
| Sizes Available | 1.0mm / 1.5mm / 2.0mm / 2.5mm / 3.15mm / 4.0mm / 5.0mm / 6.3mm |
| Flute Type | Straight Flute (DIN 333 A/B) |
| Shank Type | Round Straight Shank |
| Hardness | HRC 65–67 after vacuum heat treatment |
| Application | Spotting, Centering, Chamfering, Pilot Holes in metal |
| Industry / Field | Application Details |
|---|---|
| CNC Machining Workshops | Spot drilling and centering operations before deep-hole or tapping processes |
| Lathe and Turning Centers | Centering of rotating workpieces using tailstock drilling or live centers |
| Sheet Metal & Fabrication | Chamfered holes for rivets, fasteners, and thread taps on sheet or tubular steel |
| Tool and Die Manufacturing | Pilot drilling in hardened dies or jigs for accurate alignment before further machining |
| Automotive / Aerospace | Starting holes in alloy components subject to vibration, load, or thermal stress |
| Heavy Industry Maintenance | Repair and retrofit drilling where hole alignment is critical |
| DIY / Workshop Settings | Ensures hole accuracy for hobbyists, fabricators, and small-batch manufacturers |
Designed specifically for bulk orders and reseller channels, our packaging and customization options include:
Standard Wholesale Pack:
5–10 pieces per plastic tube or set box
50–100 pcs per inner box with foam support or slots
Master cartons of 500–1000 pcs for export
Labeling & Branding:
OEM logo laser-engraving
English/Russian bilingual labeling (with barcodes)
Custom size assortment sets (metric or inch)
MOQ Support:
Small MOQ accepted for new distributors
Flexible packaging schemes based on buyer region (Europe, CIS, USA)
Q1: Can I order this center drill set with my own brand and box design?
A: Yes. We support full OEM/ODM service including logo marking, color box design, and labeling in English, Russian, or bilingual formats.
Q2: Are these suitable for stainless steel?
A: Absolutely. The M35 cobalt and TiAlN coating combination makes them ideal for drilling into stainless steel, alloy steel, and carbon steel.
Q3: What's the usual MOQ for wholesale orders?
A: For standard products: 500 pcs. For OEM: starting from 1000 pcs. We also support smaller trial orders for new partners.
Q4: Do you offer inch sizes?
A: Yes. In addition to metric (1.0mm–6.3mm), we also provide inch-based center drills from 1/32" to 1/4".
Q5: How do you control quality?
A: All products go through full CNC grinding, hardness testing (HRC65–67), TiAlN coating inspection, and dimensional accuracy checks before packing.
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...
Get in touch with us
Leave a Message, we will call you back quickly!