Screw Countersink Drill Bit for Metal Stainless Steel Screw Installation
Bullet Points
Premium Material: This countersink drill bit adopts high-speed steel and cobalt steel raw materials, with titanium coated surface, high temperature resistance and long service life, not easy to chip or deform during high-intensity processing.
High Precision Machining: Standard 90°/120° taper design with mirror-polished cutting edges, realizing accurate counterbore depth and flat screw mounting without protrusion, no secondary deburring required.
Smooth Chip Removal: Optimized spiral flute structure effectively discharges cutting chips, prevents tool clogging and burning, greatly improves processing efficiency and ensures smooth cutting.
Wide Compatibility: Universal chamfer drill bit fits M3 to M10 standard screws, compatible with metal, stainless steel, wood, plastic and other materials, suitable for industrial and household use.
Diversified Specifications: Multiple shank types and flute types are optional, supporting customized size and logo, meeting diverse processing and wholesale demands.
Applications
This professional counterbore drill bit is widely used in furniture manufacturing, hardware assembly, sheet metal processing, mechanical equipment maintenance, door and window installation and precision workpiece processing. It is an essential deburring and chamfering tool for flat screw installation in industrial production and daily maintenance.
Hot Q&A
Q1: What is a countersink drill bit used for?
A1：A countersink drill bit is mainly used for screw counterboring, hole chamfering and workpiece deburring. It can process standard tapered holes to make screws flush with the workpiece surface, avoiding protruding screws and sharp burrs, widely used in hardware assembly and woodworking processing.
Q2: What materials can this countersink drill bit process?
A2：Our chamfer drill bit is suitable for multiple materials, including stainless steel, iron, aluminum alloy, metal sheet, solid wood, plywood and plastic. HSS cobalt and titanium coated models are specially upgraded for hard metal processing with better wear resistance.
Q3: What is the difference between 90° and 120° countersink bit?
A3：90° countersink drill bit is the most universal type, suitable for most standard flat-head screws; 120° model is more suitable for large-angle countersinking and special screw installation. You can choose according to your actual processing needs.
Q4: Is the hex shank better than straight shank?
A4：Hex shank countersink bit has better anti-slip effect, suitable for electric drills and pneumatic tools with quick-change chucks; straight shank features higher coaxiality, more suitable for precision bench drill and industrial fixed processing.
Q5: Does this countersink drill bit easy to break or chip?
A5：Adopting high-hardness HSS and cobalt steel material with integral quenching process, ourcounterbore drill bit has strong toughness and anti-breaking performance. The mirror-polished blade reduces cutting resistance, effectively avoiding edge chipping during long-term continuous work.
