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1/2″ High Speed Steel 13.5-35mm Diameter HSS Equal Shank Twist Drill Bits Technical Specifications
Product name: 1/2 equal shank twist drill
Size：12mm-35mm
Material:4241 HSS
Features: high hardness, wear resistance, accurate positioning, good chip removal, high efficiency
Use: For opening holes in stainless steel, chrome steel, quadrilateral tubes and other materials
12-17 mm shank diameter is 10mm, 18-35mm shank diameter is 12.7mm
Package Included:1x HSS Twist Drill Bit
1.High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance.
2.Universal 118° point shape for drilling a wide selection of materials.
3.Precision ground point, flutes, body, clearance and drill diameter for the ultimate in accuracy and performance.
4.Ground flutes provide fast chip removal to maximize accuracy and efficiency along the full working surface of the bit.
What is a Reduced Shank Drill Bit Used For?
Reduced shank drill bits are primarily used when the required hole size exceeds the chuck capacity of the drill machine. They provide a practical solution for drilling large holes in metal, plastic, and other industrial materials5 without requiring specialized equipment.
Their flexibility makes them popular across manufacturing, maintenance, fabrication, and construction industries.
Which Materials and Industries Commonly Use Reduced Shank Drill Bits?
Reduced shank drill bits are suitable for a wide range of materials because they are available in different HSS and cobalt grades.
Common materials include:
Carbon steel
Stainless steel
Cast iron
Aluminum
Copper
Brass
Plastic
Industries that frequently use reduced shank drill bits include:
Metal fabrication
Industrial maintenance
Construction
Automotive repair
Manufacturing plants
Steel structure production
Because one drill bit can fit standard machines while producing larger holes, these products remain highly practical for workshops that need flexibility.
What Features Should Procurement Managers Evaluate Before Bulk Purchasing Reduced Shank Drills?
Not all reduced shank drill bits offer the same performance. Material quality, heat treatment, and manufacturing accuracy6 all influence tool life and drilling efficiency7.
Before placing bulk orders, buyers should evaluate:
Material grade (HSS, M2, M35, M42)
Hardness consistency
Point angle accuracy
Concentricity
Surface finish
Shank tolerance
These quality indicators help reduce customer complaints and improve repeat orders. HSS Drill Bit Reduced Shank for Precision Drilling
Reduced Shank Drill Bits Size Chart
