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| Customization: | Available |
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| Customized: | Customized |
| Standard: | GB/T |
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Product Description
1)Stainless Steel
2)Mold Steel
3)Copper Alloy
4)Aluminum Alloy
5)Cast Iron
6)PVC
1)Razor-Sharp Cutting Edge - High hardness for smooth, fast drilling with minimal wear.
2)Anti-Slip Design - Fully ground blade opening ensures precise positioning and reduces slippage.
3)Optimized Chip Removal - Fine-tooth spiral design for effortless debris clearance.
4)Polished Finish - Smooth surface treatment enhances durability and aesthetics.
5)Lightweight & Ergonomic - Easy to handle, reducing operator fatigue.
1) Durable & Efficient
Crafted from premium high-speed steel (HSS) with a serrated design, our twist drill ensures exceptional durability and fast, clean drilling - even in tough materials like stainless steel, hardened alloys, and plastics.
2) Wide Material Compatibility
Designed for versatility, this drill delivers reliable performance across a range of materials, including metals, alloys, composite materials, and engineering plastics, making it a must-have for both industrial and workshop use.
3) Professional-Grade Results
Whether for industrial production lines or precision DIY projects, this drill bit offers superior cutting efficiency, reduced heat generation, and extended tool life, ensuring flawless, professional-grade drilling every time.
High-precision CNC grinding ensures optimal serrated flute geometry and precise point angle control, delivering stable, high-speed drilling with efficient chip evacuation.
High-temperature vacuum heat treatment enhances core hardness and cutting edge toughness, prolonging tool life under demanding conditions.
Ultra-precision surface polishing minimizes friction, reduces heat buildup, and prevents workpiece surface damage during continuous drilling.
EAF + LF + VD + RS ESR technology produces ultra-clean HSS with extremely low impurity levels, improving drill toughness, wear resistance, and reducing the risk of chipping or breakage during high-load applications.
Integrated Quenching, Cryogenic Treatment, and Tempering process achieves an optimal balance of hardness (up to HRC 67) and flexibility, enabling reliable performance in drilling hardened steels, stainless steels, and alloy materials without micro-cracks.
Rapid Solidification ESR refining enhances the uniformity of abrasive particles along the cutting edge, significantly boosting wear resistance, thermal stability, and edge integrity - especially critical in deep-hole and high-speed drilling.
Multiple HSS grades available (M2, M35, M42) to suit different material applications such as stainless steel, titanium alloys, and heat-resistant steels.
Flexible flute length, helix angle, point angle, and serration pattern customization to optimize cutting performance for specific materials and hole depths.
Optional premium coatings (TiN, TiAlN, TiCN) for enhanced wear resistance, heat tolerance, and cutting speed in demanding applications.
Focused on flute precision and chip evacuation performance to handle high chip volumes in deep or high-speed drilling.
Customizable point angle and helix angle for optimized cutting across different metals and alloys.
Broad selection of HSS grades and high-performance coatings tailored to industrial drilling applications.
Q1: What is a serrated twist drill and how is it different from a standard twist drill?
A: A serrated twist drill features specially designed serrated cutting edges along the flute, which reduce cutting resistance, improve chip evacuation, and minimize heat buildup during drilling. Compared to standard twist drills, it delivers faster cutting, smoother chip removal, and longer tool life, especially when machining stainless steel, titanium alloys, and other tough materials.
Q2: What materials and coatings are available for your serrated twist drills?
A:
Material options:
High-speed steel (HSS/M2/M35)
Cobalt high-speed steel (HSS-Co)
Powder metallurgy high-speed steel (PM-HSS)
Coating options:
TiN (general purpose)
TiAlN (high-temperature resistance for hard materials)
TiCN (high hardness and superior wear resistance)
Uncoated and custom coating options are also available upon request.
Q3: What causes rapid wear or breakage during drilling, and how can it be avoided?
A:
Common causes:
Excessive feed rate
Insufficient cooling or lack of cutting fluid
Using standard drills for hard materials instead of cobalt or coated variants
Recommendations:
Select the right drill type and coating based on material hardness and drilling depth, and always apply adequate cutting fluid to extend tool life and prevent breakage.
Q4: How can I tell when a serrated twist drill needs to be replaced?
A:
Increased burrs on the hole edge
Abnormal or rough cutting noise
Hole diameter deviation exceeding 0.1mm
Visible chipping or wear on the serrated cutting edge
Tip: Regularly inspect the cutting edge under magnification and replace drills promptly to maintain machining accuracy.
Q5: Can the helix angle and cutting geometry of serrated twist drills be customized? What are the typical applications?
A:
Yes - both the helix angle and serration profile can be customized. Standard recommendations include:
30°-35° helix angle: Suitable for steel and cast iron
40°-45° high helix angle: Ideal for soft materials like aluminum and copper for improved chip evacuation
10°-20° low helix angle: Recommended for hardened steels and alloys to minimize vibration
We also offer custom cutting angles and serration designs based on your application needs for optimized drilling speed and surface finish.
Q6: Do you offer custom serrated twist drill designs? What options are available?
A: Yes - we support full customization, including:
Internal coolant hole drills (drawings required)
Step drills, multi-land drills, and special serration profiles
Custom helix angle, cutting angle, flute length, total length, diameter, and coating options
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