High-Speed Steel Titanium Coated HSS Spot Weld Drill Bit

Specifications:

SUBORUI Spot Weld Drill Bits are purpose-engineered to solve the core challenge of clean, precise spot weld removal in automotive body repair, sheet metal fabrication, and industrial maintenance.

Crafted from premium HSS CO (Cobalt) steel, fully ground to precision tolerances, and coated with industrial-grade titanium (TiN) for enhanced durability, these bits feature a Type N regular spiral flute and straight shank design. They are the trusted choice for global B2B partners including automotive repair shops, collision centers, sheet metal fabricators, hardware distributors, and industrial MRO service providers, delivering consistent, damage-free spot weld removal and long service life in high-demand applications.

Core Design & Material Advantages

Premium HSS CO Cobalt Base Material

Superior Heat & Wear Resistance: Cobalt-alloyed HSS maintains cutting edge sharpness at extreme drilling temperatures, outlasting standard HSS bits by 2x+ in spot weld applications
Enhanced Toughness: Resists chipping and breakage when drilling through hardened spot welds, reducing tool replacement costs
Optimal Cost-Performance: Delivers professional industrial performance at a competitive price, perfect for bulk workshop use

Spot Weld-Specific Cutting Geometry (Core Differentiator)

Centering Pilot Tip: The integrated pilot tip locks onto the center of the spot weld, eliminating drill wander and ensuring perfectly centered, clean cuts
Flat Bottom Cutting Edge: Creates a flat-bottomed hole that precisely removes the spot weld without damaging the underlying sheet metal
Type N Regular Spiral Flute: Optimized for fast, efficient chip evacuation when drilling through hardened welds, preventing clogging and overheating

Industrial Titanium (TiN) Coating

Extreme Surface Hardness: TiN coating boosts surface hardness to 85+ HRC, further extending tool life and reducing friction
Smoother Drilling: Low-friction coating enables faster penetration through spot welds and reduces heat buildup, protecting the cutting edge
Corrosion Resistance: Protects the bit from rust and oxidation, extending shelf and service life in workshop environments

Precision Fully Ground Manufacturing

Every bit undergoes full CNC grinding across the cutting edge, flute, and shank, ensuring:

Ultra-tight concentricity and minimal runout for perfectly centered, accurate spot weld removal
Smooth, polished flutes for efficient chip evacuation, even in high-speed drilling
Consistent batch-to-batch performance, critical for professional repair shops

Straight Round Shank Design

Universal Compatibility: Fully compatible with all standard drill chucks, cordless drills, and drill presses
Reinforced Shank Structure: Uniform shank design ensures stable clamping and zero slippage during high-torque drilling

D1(mm)	L1(mm)	Shank Dia(mm)
6.0	66	6.0
7.0	71	7.0
8.0	80	8.0
10.0	88	10.0
6.5	40	8.0
8.0	40	8.0
8.0	44	8.0
10.0	45	8.0