Accurate Holes, Every Time
Through-hole & Blind-hole Drilling
Expert CNC drilling for metals and plastics — including deep-hole drilling, countersinking, tapping, and high-speed multi-axis drilling.
What is CNC Drilling?
CNC drilling is a machining process where computer-controlled drills create precise, repeatable holes. It covers everything from through-holes and blind-holes to countersinking, tapping, and deep drilling — ensuring accuracy and consistency across metals and plastics.
Hole Types
Through, blind, counterbore, countersink, and tapped threads.
Consistency
Tight positional accuracy and burr-controlled finishes.
Range
Suitable for prototypes, small batches, and large-scale production.
Materials
Aluminum, stainless, mild steel, brass, copper, Delrin, nylon, PTFE.
Learn more in our CNC Machining and CNC Milling sections, or see all Capabilities.
Why Choose TheSupplier for CNC Drilling?
Buyers worldwide rely on TheSupplier for precision CNC drilling. Our vetted supplier network, strict QA, and deep capacity ensure on-time delivery and competitive cost for every order — from one-off prototypes to mass production.
High Accuracy
Burr-free drilling with tight positional tolerances.
Fast Turnaround
Rapid lead times powered by 20k+ vetted suppliers.
Multi-Material
Aluminum, stainless, brass, copper, plastics, and more.
Competitive Pricing
Idle capacity & bulk leverage deliver better cost savings.
Global Delivery
Air and sea shipping with full customs documentation.
Quality Assurance
ISO-aligned inspections and CMM reports available.
Ready to experience reliable CNC drilling? Upload your drawings now →
CNC Drilling Capabilities
Our CNC drilling services cover a wide range of hole-making requirements—from standard through-holes to advanced deep drilling and tapping. Every job is executed with precision, consistency, and speed.
Through Holes
Accurate drilled holes with clean entry and exit, suitable for fastening and assemblies.
Blind Holes
Controlled depth drilling with flat or chamfered bottoms, ideal for tapped features.
Deep-Hole Drilling
Up to 25×D depending on material and tool, with coolant-assisted accuracy.
Countersinking
Chamfered openings for flush fasteners or surface finishing requirements.
Tapping
Thread creation (M2–M24 typical) with high repeatability and gauge-checked quality.
Multi-Axis Drilling
5-axis setups for angled holes, compound geometries, and complex parts.
Not sure which option fits your part? Share your drawing →
Real CNC Drilling Work — Multiple Components
A single view of multiple CNC drilled parts — showcasing through-holes, blind-holes, countersinking, and tapping delivered by TheSupplier. One collage proves the depth of our capability.
Want your project featured here? Upload your drawing →
Supported Materials for CNC Drilling
We drill across a wide range of metals and engineering plastics — optimized feeds, speeds, and tooling for every material.
Industries We Serve
From automotive to aerospace, TheSupplier delivers CNC drilling parts across diverse industries — meeting strict standards for quality, cost, and lead time.
Automotive
Engine parts, brackets, housings, chassis drilling.
Aerospace
Lightweight alloys, precision holes for structures & interiors.
Industrial
Machinery bases, jigs, fixtures, heavy equipment drilling.
Oil & Gas
Flanges, valves, and high-pressure drilled components.
Medical
Stainless & titanium drilled parts for medical devices.
Electronics
Precision holes in enclosures, heat sinks, and connectors.
Processes We Offer
Beyond CNC drilling, TheSupplier provides a complete suite of machining and fabrication services — enabling us to handle prototypes and production across all complexity levels.
Ready to Drill Your Next Part?
Fast quotes, precise hole-making, and reliable delivery from prototype to production.
CNC Drilling Guides & Resources
Hole quality, H7 bores, when to ream, and buying tips to avoid tolerance stack-up on assemblies.
CNC Machining Tolerances Explained
What ±0.01 mm really means for hole true position, bores, and fits.
Read guide →How to Choose the Right CNC Machining Service
When drilling + reaming beats boring; supplier signals that protect hole quality.
Read guide →CNC Milling Surface Finish Guide
Finish impacts bore size after anodize/plating—how to plan compensations.
Read guide →CNC Drilling — FAQs
Quick answers to the most common questions buyers ask us.