01 — Essential Specifications
Choose with confidence
Essential specifications
The facts that matter most when choosing the right product in this family.
02 -- Materials, Applications & Machines
Working compatibility
Materials, applications & machines
Quickly confirm what the tool can cut, the work it is designed to perform, and the equipment it is intended to run on.
Compatible materials
Recommended workpiece materials
- Aluminum
- Mild steel
- Steel
Recommended applications
Typical jobs and operations
- Aluminum alloys, Mild steel, Low to medium steel alloys Aircraft assembly and structural drilling Maintenance and service access holes Deep or obstructed hole drilling Structural fabrication where extra reach is required
- Holemaking
Compatible machines
Equipment and operating methods
- Portable drill
- Drill press
03 -- Complete Technical Specifications
Technical data
Complete technical specifications
Open only the groups you need to confirm construction, dimensions, and operating requirements.
Construction & identification
Tool typeDrill Bits
Tool subtypeAircraft Extension Drill Bits
Detailed styleSplit-Point HSS
Manufacturer seriesCS12X
Series familyCS12X
Measurement systemWire/Letter/Number
Tool materialHigh-speed steel
Manufacturer part numberCS12X-29
Dimensions & fit
Size#29
Drill / wire / letter designation#29
Cutting diameter29
Flute / cutting length1-3/4
Overall length12
Pack quantity1
Cutting geometry
Point geometry135 Degree Split Point
04 -- Why Choose this series
Series advantage
Why choose the CS12X series
CS12X
Long-Reach 135° Self-Centering Split Point Design. This feature drastically reduces walking at the drill start while providing deep reach with minimal deflection — a major advantage in aircraft and structural applications where precision matters.
Features supporting this advantage
- Long-Reach 135° Self-Centering Split Point Design. This feature drastically reduces walking at the drill start while providing deep reach with minimal deflection — a major advantage in aircraft and structural applications where precision matters.
- High-speed steel
- 135 Degree Split Point
05 -- Compatibility & What's Included
Compatibility & contents
Confirm the fit before ordering
The systems, models, and components below come directly from the product’s normalized fit data.
What’s included
Components supplied with this product
- Flute length Is the same as jobber drill length
06 -- Use Notes & Technical Description
Before you use it
Use notes & technical description
Important fit, operating, and care guidance to review before putting the tool to work.
View the complete technical description
Champion CS12X-29 #29 12" HSS Aircraft Extension Drill Bit — 135° Split Point
The Champion CS12X-29 is a 12-inch HSS aircraft extension drill bit made for long-reach drilling where a standard-length drill cannot reach the hole. This individual drill is the exact Number #29 wire-gauge size and is a dependable number #29 aircraft extension drill bit for aircraft assembly, structural fabrication, maintenance and obstructed-hole applications.
The CS12X features a 135° self-centering split point to reduce walking and improve hole-start accuracy. Its black oxide treated high-speed steel construction helps improve heat resistance and tool life, while the spring-tempered shank helps resist permanent bending when drilling holes that are not perfectly aligned.
Technical Specifications
- Exact size: Number #29 wire-gauge size
- Manufacturer part number: CS12X-29
- Drill type: Aircraft extension drill
- Material: Black oxide treated high-speed steel (HSS)
- Point: 135° self-centering split point
- Flute length: 1-3/4"
- Overall length: 12"
- Shank: Spring-tempered extension shank
Applications
Use this Champion CS12X Number #29 wire-gauge size extension drill for aircraft assembly fixtures, aluminum, low-to-medium steel alloys, deep holes, service-access holes, maintenance, structural drilling and fabrication where extra reach is required. The flute length is the same as a standard jobber drill for controlled chip evacuation.
How ordering works
A clear process from order to delivery
Whether you need one replacement tool or a recurring supply order, every step is designed for clear communication, accurate fulfillment and dependable delivery.
1
Order submitted securely
Your products, quantities and order details enter our system for verification.
Secure submission
2
Confirmation sent
You receive a clear summary of the items and quantities, ready to review or share.
Details confirmed
3
Picking and packing
Our team prepares the correct products and quantities for safe, accurate transportation.
Carefully prepared
4
Tracking provided
As soon as the carrier label is created, the tracking information is sent to you.
Trackable shipment
5
Delivery to your location
Your order travels to the selected address with clear visibility into its progress.
Dependable delivery
Business purchasing
Built for the way businesses buy
For distributors, wholesalers, machine shops and contractors: apply for Net 30 terms, email a PDF purchase order or request tailored business pricing.
Canada & United States
Purchasing in CAD
Net 30 terms available after credit approval
PDF purchase orders accepted directly by email
Targeted pricing based on products, quantities and repeat needs
Credit decisions are usually completed in 2–3 business days. No minimum order is required to apply.