Custom Solid Carbide Twist Drill with Special Diameter for CNC Machining
Consistent Quality
Consistent geometry across repeat orders.
คำสั่งซื้อที่ยืดหยุ่น
Small batches and mixed sizes available.
OEM Support
Custom marking, labels and packaging.
แบบมาตรฐานและแบบตามสั่ง
Standard sizes and custom configurations.
Custom Special-Diameter Solid Carbide Twist Drill Overview
This custom solid carbide twist drill is developed for non-standard hole sizes, application-specific tolerances and stable CNC drilling where a standard drill is not the right fit. The complete tool configuration is reviewed as one system rather than changing only the cutting diameter. Cutting diameter, diameter tolerance, flute length, overall length, shank diameter, point and flute geometry, carbide substrate and coating can be matched to the required hole, workpiece material, hardness, CNC machine and holder conditions.
Special / Non-Standard
Drawing-Based
Solid Carbide
Drawing / Sample
Key Configuration
Special Diameter & Tolerance
Metric, inch and non-standard cutting diameters can be reviewed together with the required hole size and finishing process.
Custom Length & Shank
Flute length, overall length and shank diameter can be matched to drilling depth, chip evacuation, holder interface and machine clearance.
Application-Specific Geometry
Point angle, web thinning, helix, flute form, edge preparation, carbide and coating are reviewed for the confirmed workpiece and CNC conditions.
Key Product Advantages
Non-Standard Hole Matching
Special metric, inch and intermediate diameters can be produced for applications where a standard drill size does not match the required hole.
Reduced Secondary Machining
A dedicated special-diameter drill can support pre-reaming, tapping, forming, fit-hole and other processes where reducing boring or secondary finishing is valuable.
Complete Tool Configuration
Diameter, length, shank, point geometry, flute design and surface treatment are reviewed together rather than treating the cutting diameter as an isolated parameter.
Repeat Drawing-Based Supply
Approved dimensions, tolerance, geometry, coating and marking can be checked against the order specification for repeat CNC tooling requirements.
Workpiece Material Compatibility
Applications & Target Scope
- Non-standard metric or inch hole diameters
- Pre-drilling before reaming, tapping or forming
- Special clearance or interference-fit holes
- Replacement of discontinued drill sizes
- Applications intended to reduce boring or secondary finishing
- Drawing-based hole tolerance requirements for CNC production
Product & Cutting-Edge Details
Tool Nomenclature & Dimensions
This special-diameter solid carbide twist drill is manufactured from an approved drawing, current-tool drawing, sample or confirmed specification. The cutting diameter is only one part of the design; tolerance, flute length, overall length, shank, point geometry, flute geometry, carbide and coating should be reviewed together for the required CNC application.
Custom Specification Sheet
Provide the information below for technical review and quotation. A drawing or sample is recommended when the tool includes a special diameter, custom tolerance or holder-specific shank.
Special-Diameter CNC Drilling Guidance
- Confirm the Finished Hole: Define the special diameter, tolerance and whether the drilled hole is the final size or a pre-machining step.
- Match Length to Hole Depth: Use only the flute and overall length required for drilling depth, chip space and holder clearance.
- Confirm CNC Conditions: Machine, holder, runout, coolant and available clearance should be reviewed before finalizing the shank and geometry.
- Match Geometry to the Material: Point, flute, edge preparation, carbide and coating should be selected for the exact workpiece grade and hardness.
Recommended Starting Cutting Parameters
Starting cutting data should be selected only after the special diameter, workpiece grade, hardness, hole depth, geometry, coating, machine rigidity and coolant condition have been confirmed. Begin conservatively and verify entry stability, chip evacuation, hole size, burr formation and tool wear before increasing production parameters.
Solid Carbide Drill Cutting Data Guide
Use the general drill guide only as a starting reference after the special-diameter configuration has been confirmed.
Solid Carbide Drill Product Family Overview
Choose the drill series according to whether the application requires a special diameter, standard precision drilling, additional reach or a dedicated material-specific configuration.
Special-Diameter Twist Drill
Custom / Drawing-Based (Current)
Stub-Length Drill
Precision Short Holes
Jobber-Length Drill
General CNC Drilling
Long-Series Drill
Extended Reach / Deeper Holes
For related standard drill series, View the Solid Carbide Drill Catalog . For special-diameter tools, send the drawing or existing tool sample for technical review.
Custom-Diameter CNC Twist Drill Configuration
Non-standard cutting diameter, flute length, overall length, point form, shank dimensions, coating and tolerance can be manufactured according to the required CNC hole-making operation. All dimensions are finalized from the drawing and application data.
Drawing-Based Geometry & Edge Preparation
Point form, web thinning, flute profile, margins, steps or chamfers and cutting-edge preparation can be configured around the required hole feature.
Non-Standard Diameter & Length Options
Metric, fractional-inch and intermediate decimal diameters can be combined with drawing-defined flute, reach, shank and overall dimensions.
บริการ OEM และแบรนด์ส่วนตัว
OEM manufacturing and private-label supply options for CNC machining facilities, industrial distributors and drawing-based tooling customers.
Laser Etching
Custom laser marking for logos, tool codes, diameter specifications, coating identification and batch numbers.
Custom Packaging
Individual protective tubes, diameter labels, multi-pack boxes, custom inserts and private-label packaging options.
Commercial Terms
Flexible MOQ options for standard configurations, custom sizes, trial orders and scheduled repeat supply.
Technical Workflow
Inquiry
Submit the drawing, material, tolerances, machine setup and quantity.
Engineering
Non-standard dimensions, geometry, coating, coolant and inspection needs are reviewed.
Commercial
Quotation, MOQ, production schedule and delivery terms are confirmed.
Production
Drawing-based CNC grinding, edge preparation, coating and identification.
Quality Control
All agreed diameters, lengths, profiles, runout and cutting edges are inspected.
Inspection & Quality Control
Drill dimensions, cutting-edge geometry and visible surface condition are checked according to the confirmed product specification and application requirements.
Protective Packing for Shipment
Finished drills are protected individually before batch labeling and export-carton reinforcement.
Individual Tool Protection
Each drill is individually protected in a plastic tube to reduce contact damage during storage, handling and transportation.
Batch & Label Verification
Tools are grouped and labeled by specification to support order verification before carton packing.
Export Carton Protection
Batch packaging, cushioning materials and reinforced export cartons are selected according to the order quantity and shipping method.
Reference Lead Time
The following timeframes are general references. Availability and production scheduling are reviewed for each order.
Shipping Options
Shipping arrangements can be selected according to order size, delivery schedule and destination.
Product FAQs
Product-specific information about special-diameter solid carbide twist drills, custom dimensions, CNC machining requirements, material matching and quotation details.
What is a special-diameter solid carbide twist drill?
A special-diameter drill is produced for a cutting size that is not covered by the required standard series or when a specific finished-hole size needs a dedicated tool. Intermediate, non-standard and drawing-based diameters can be reviewed according to the hole tolerance, workpiece material and CNC machining setup.
Can you manufacture intermediate and non-standard drill diameters?
Yes. Special cutting diameters can be reviewed from the required hole size or customer drawing. Please provide the target diameter, tolerance, hole depth and inspection requirement so the final cutting dimension and manufacturing feasibility can be confirmed before production.
Can the flute length, shank diameter and overall length also be customized?
Yes. Flute length, shank diameter, shank structure and overall length can be matched to the hole depth, holder interface, machine clearance and required tool rigidity. Standard-length, short-reach, long-reach and drawing-specific configurations can be reviewed together with the special cutting diameter.
Can the point geometry and coating be matched to different workpiece materials?
Yes. Point geometry, edge preparation, flute finish and coating can be reviewed according to the actual material grade, hardness, hole depth and required tool life. Steel, stainless steel, cast iron and non-ferrous materials may require different cutting and surface configurations.
What CNC machining conditions should be confirmed before ordering?
Please confirm the machine type, holder or collet, spindle range, measured runout, coolant method and available tool clearance. These conditions affect the practical drill length, shank design, cutting parameters and the stability of the special-diameter tool during production.
What information is required for a quotation?
Please provide the cutting diameter, finished-hole tolerance, hole depth, flute length, shank diameter, overall length, workpiece material and hardness, coolant condition, machine type and required quantity. A drawing is recommended when the tool includes a special diameter, non-standard shank or other custom dimensions.
Ordering & OEM FAQs
General information for custom samples, mixed specifications, OEM marking and repeat production.
Do you accept small trial orders?
Yes. Small trial quantities can be reviewed for dimensional verification, hole-quality testing and tool-life evaluation before larger repeat orders.
Can multiple special diameters be ordered together?
Yes. Different special diameters and custom length combinations can normally be included in one order when the carbide, coating and production requirements are compatible. Each specification should be identified by size, item code or drawing number.
Is OEM laser marking available?
Yes. Logo, item code, special diameter, batch number and other identification can be reviewed where the available shank area allows. Custom labels and private-brand packaging are also available for OEM programs.
What is the typical production lead time?
Lead time depends on the special diameter, tool length, point geometry, coating, tolerance requirement and order quantity. Final production timing is confirmed after the drawing or technical specification has been approved.
Downloads & Technical Resources
Access drill series information and general cutting-data references for special-diameter CNC drilling applications.
Need Sizes, Pricing or Custom Options?
Send us the required tool type, sizes, quantities, workpiece material and any OEM or custom requirements. We will confirm suitable specifications, availability, lead time and quotation details.
Drawings, size lists and reference photos are welcome.
