HSS Perfect Drilling Double Cutting Step Drill Bits
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Product Highlights
- Full Customization Options: Offers full, minor, and flexible customization including design and sample-based options.
- Wide Material Compatibility: Suitable for drilling steel, brass, copper, aluminum, wood, and plastic.
- Durable Carbon Steel Material: Made from hardened and tempered carbon steel with chrome or sand coating.
- Multiple Certification Standards: Certified with RoHS, CE, GS, DIN, and ISO standards.
- Versatile Size Range: Available in sizes 4-30mm, 5-35mm, 6-38mm, and 20-34mm with 7-15 steps.
- Optimized Cutting Parameters: Detailed speed and feed rates provided for various materials like stainless steel and titanium.
- Multiple Coating Types: Offers mirror nickel, black nickel, manganese phosphate, and electrophoresis coatings.
- Flexible Delivery Options: Supports sea freight, air, train, and express shipping methods.
Product Attributes
- Customization
- Available
- Color
- Silver
- Folded
- Unfolded
- Model NO.
- UNT-06
- Certification
- RoHS, CE, GS
- Material
- Carbon Steel
- Customized
- Customized
- Compatible Brand
- Metabo, DeWalt, Hitachi, MAKITA, BOSCH
- Length(mm)
- 4-34
- Surface Treatment
- Chrome
- Application
- Drilling Round Holes in Steel, Brass, Copper etc
- Delivery
- Sea Freight, Air, Train, Express
- Step No.
- 7-15
- Transport Package
- Cartons+ Pallets
- Specification
- 15mm-45mm
- Trademark
- UN
- Origin
- China
- HS Code
- 8467991000
- Production Capacity
- 25000mpcs/Year
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of HSS Perfect Drilling Double Cutting Step Drill Bits
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HSS Perfect Drilling Double Cutting Step Drill Bits -
HSS Perfect Drilling Double Cutting Step Drill Bits -
HSS Perfect Drilling Double Cutting Step Drill Bits -
HSS Perfect Drilling Double Cutting Step Drill Bits -
HSS Perfect Drilling Double Cutting Step Drill Bits -
HSS Perfect Drilling Double Cutting Step Drill Bits -
HSS Perfect Drilling Double Cutting Step Drill Bits
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Product Description
| Size | 4-30/5-35/6-38/20-34/etc |
| Length | 90mm |
| Shank | 6mm-13mm |
| Material | Hardened and Tampered Carbon Steel |
| Surface Treatment | Sand Coating, Chrome |
| Cutting Edge | Round |
| Packaging | PVC Pouch, Plastic Tube, Plastic Hanger |
| Application | Drilling Round Holes in Steel, Brass, Copper, Aluminum, Wood and Plastic |
| Customization | Acceptable |
| Brand | Union, OEM |
| Standard | DIN, ISO |
| Origin | China |
Drill bits are cutting tools used to create cylindrical holes in materials such as wood, metal, concrete, and masonry. They are an essential tool for construction, manufacturing, DIY projects, and more.
Drill bits including HSS twist drill bit, with straight shank and hex shank, wood drill bits, and construction drill bits for different working application sites.
Drill bits come in sizes ranging from small 1mm bits to large 50mm bits and above. The material, coating, and design affect their performance and applications. Understanding drill bit types and using the correct one is key to efficient drilling. Regular maintenance and replacement of worn bits are also important. Overall, drill bits are indispensable tools that provide the openings and holes required in all kinds of DIY, construction, and manufacturing work.
| Recommended Cutting Parameter Table for Processing Various Materials Using High-Speed Steel Plate Drills | |||
| Material | Cutting speed m/min | Feed rate mm/r | Coolant ml/min |
| Low-carbon steel | 18-25 | 0.08-0.13 | ≥40 |
| Medium-carbon steel | 15-23 | 0.08-0.13 | ≥40 |
| High-carbon steel | 13-20 | 0.07-0.13 | ≥40 |
| Structural alloy steel | 14-22 | 0.07-0.13 | ≥40 |
| Tool steel | 11-16 | 0.07-0.13 | ≥60 |
| Stainless steel | 9-15 | 0.06-0.11 | ≥200 |
| Aluminium | 60-80 | 0.2-0.25 | ≥80 |
| Cast iron | 20-40 | 0.1-0.16 | No compressed air cooling required |
| Bronze | 21-30 | 0.12-0.18 | No compressed air cooling required |
| Brass | 35-50 | 0.15-0.21 | ≥40 |
| Titanium alloy | 4-10 | 0.07-0.13 | ≥200 |
| Manganese alloy | 10-18 | 0.05-0.1 | ≥400 |
| Superalloy | 8-20 | 0.05-0.1 | ≥400 |
| Recommended Cutting Parameter Table for Processing Various Materials Using Carbide Steel Plate Drills | |||
| Material | Cutting speed m/min | Feed rate mm/r | Coolant ml/min |
| Low-carbon steel | 38-50 | 0.07-0.12 | ≥40 |
| Medium-carbon steel | 35-45 | 0.07-0.12 | ≥40 |
| High-carbon steel | 35-45 | 0.07-0.12 | ≥40 |
| Structural alloy steel | 30-40 | 0.07-0.13 | ≥40 |
| Tool steel | 25-40 | 0.07-0.13 | ≥60 |
| Stainless steel | 12-21 | 0.08-0.12 | ≥200 |
| Aluminium | 80-120 | 0.15-0.2 | ≥80 |
| Cast iron | 55-75 | 0,1-0.15 | No compressed air cooling required |
| Bronze | 48-60 | 0.1-0.15 | No compressed air cooling required |
| Brass | 30-42 | 0.1-0.15 | ≥40 |
| Titanium alloy | 6-15 | 0.1-0.13 | ≥200 |
| Manganese alloy | 15-28 | 0.07-0.1 | ≥400 |
| Superalloy | 13-24 | 0.07-0.1 | ≥400 |
| Main Fastener Coating | |||
| Types | Application | Spray Test Hours | Characteristics |
| Mirror Nickel-plating | ALL Metal | 72Hours | Stable Excellent polishing performance Improve Wear resistance Wide range of applications |
| Matt Nickel-plating | ALL Metal | 72Hours | |
| Black Nickel-plating | ALL Metal | 48Hours | High absorption rate of solar energy Used in solar collector panels. |
| Manganese Phosphate | ALL Metal | 72Hours | Enhanced resistance |
| Sand Blast | ALL Metal | - | Remove paint, rust, and residue scratches or casting marks |
| Electrophoresis | ALL Metal | 1000Hours | Maintain metallic luster Anti-corrosion properties |
| Color Electroplating | ALL Metal | 96Hours | Improve mental strength Prevent metal oxidation |
| Steel Material Chemical Composition | ||||||||
| Types | C | Si | V | Cr | Mn | Ni | Mo | Characteristic |
| CR-MO | 0.18-0.23 | 0.15-0.35 | - | 0.40-0.60 | 0.90-1.20 | - | 0.13-0.20 | 41xx-series SAE steel grades Excellent strength-to-weight ratio Stronger and harder Not easily welded |
| CRV | 0.5 | 0.3 | 0.18 | 0.80-1.10 | 0.70-0.90 | - | - | 6000-series SAE steel grades Suitable for hardening Resist abrasion, oxidation, and corrosion Improve material elasticity |
| S2 | 0.40-0.55 | 0.90-1.20 | <0.50 | - | 0.30-0.50 | <0.30 | 0.30-0.60 | One of seven types of shock-resisting steels under the AISI Classification High strength High toughness Wear resistance High hardness Resistance to shock loading |
| 45# | 0.42-0.05 | 0.17-0.37 | - | ≤0.25 | 0.50-0.80 | ≤0.25 | - | Compared with A3, it has higher strength and resistance to deformation. |
| A3 | 0.95-1.05 | 0.10-0.50 | 0.15-0.50 | 4.75-5.50 | 0.40-1.00 | - | 0.90-1.40 | High-quality high carbon alloy tool steel |
About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASR2432432". Items marked "
" are certified.
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Company Profile
Established in the early 2000s, Union Hardware began as a manufacturer and distributor of fasteners and hardware tools. In 2023, we officially consolidated into a globally focused professional hardware exporter. Our expansive product range includes photovoltaic fasteners, stainless steel fasteners, highly corrosion-resistant carbon steel fasteners, and a wide selection of hand tools (Mechanic Tools, Fastening Tools, Measuring Tools, Storage Tools, Tool Sets, PTA Kits, etc. ). Our hardware solutions are trusted across the construction, machinery, automotive, and DIY sectors. With decades of expertise producing durable, reliable products, over 85% of our goods are exported internationally.
Strategically located in Hangzhou Xiaoshan Industrial Zone, we are part of a vibrant manufacturing hub that promotes clustering effects and supply chain efficiency. Our modern facilities and proximity to Shanghai Port allow for seamless production, inventory management, and timely delivery to global markets. Leveraging our hard-won reputation for integrity, dependability, and unparalleled quality, Union Hardware continues pioneering hardware distribution. We remain committed to delivering ideal products, services, and solutions at competitive costs for trade specialists and DIYers worldwide.
About Our Factory & Business Background
-
Business Type
- Trading Company
- Address
- Room 401-1, No.58, Xiangshan Road, Wenyan Street, Xiaoshan, Hangzhou, Zhejiang, China
-
Plant Area
- 100 square meters
-
Number of Employees
- 4
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays, one month, 1-3 months
Off Season Lead Time: within 15 workdays, one month, 1-3 months -
Nearest Port
- Shanghai Port, Ningbo Port
-
Minimum Order Quantity
- 1000 pcs
-
Supply Chain Partners
- 56
Our Production Capability & Technical Expertise
-
Main Products
- Bit Holders, Bits, Sockets, Torque Wrench, Ratchet, Hex Keys, Tool Set, Pta Sets, Bi-Metal Screws, Stainless Steel Fasteners
-
Customization Options
- Full Customization, Minor Customization, Flexible customization, Customization from Designs, Customization from Samples
-
ODM Service Available
- Yes
-
R&D Engineers
- 1 people
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2023-08-03
-
Export Year
- 1 year
-
Main Markets
- Europe, Africa, Domestic
-
Repeat Buyers Choice
- 50%~80%
-
Number of Foreign Trading Staff
- 2
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- No
Our Certifications, Standards & Industry Recognition
-
Cooperated with Fortune 500
- No
FAQ
- What is the minimum order quantity?
- The minimum order quantity is 1000 pieces.
- Can the product be customized?
- Yes, full customization, minor customization, and flexible customization from designs or samples are available.
- What materials can this drill bit be used on?
- It is designed for drilling round holes in steel, brass, copper, aluminum, wood, and plastic.
- What are the available payment terms?
- We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payments.
- What is the lead time for production?
- Lead time varies by season: within 15 workdays during off-peak, and 1-3 months during peak season.
- What certifications does the product have?
- The product holds RoHS, CE, GS, DIN, and ISO certifications.
- What is the material of the drill bit?
- The drill bit is made of hardened and tempered carbon steel.
- What shipping methods are available?
- We offer sea freight, air, train, and express delivery options.
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