827EW9 Metal Drill Bit 9.7mm Buyer's Guide: Sizing, Types & Global Sourcing
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The 827EW9 metal drill bit 9.7mm is a 9.7 mm (0.3819 in) diameter twist drill used to bore clearance and pilot holes in steel, aluminium, plastic and wood. It suits hand drills and drill presses where a 10 mm-class chuck is available, and it is commonly specified for fastener clearance and cable-routing work.
Definition: A 9.7 mm metal drill bit is a cylindrical cutting tool with a 9.7 mm (0.3819 in) cutting diameter, typically 118° or 135° point angle, used in rotary or hammer-free drilling to produce holes in metal, plastic and wood. Shank style and coating determine chuck grip and service life.
Brands such as DEWALT and EAGLE TOOL US build bits in this size class with 3-flat shanks and serrated points for secure retention and clean starts. 3G Electric supplies these and equivalent 9.7 mm bits across Worldwide markets with export documentation support.
What Is a 827EW9 Metal Drill Bit 9.7mm Used For?
A 9.7 mm bit is a fractional-metric crossover size: 9.7 mm equals 0.3819 in, sitting just under 3/8 in (9.525 mm) and just over 25/64 in (9.922 mm). That makes it useful where a 3/8 in hole is slightly tight but a 10 mm hole is too loose.
Typical jobs include clearance holes for M10 fasteners, pilot holes before tapping, and cable or conduit pass-throughs in metal and plastic studs. In electrical installation, long-reach installer bits in this diameter range pull wire through multiple studs in one pass.
How Does a Twist Drill Bit Cut Metal?
The bit's helical flutes lift chips out of the hole while the point angle centres the cut. A 118° point suits general-purpose metal drilling; a 135° split point resists walking on harder or curved surfaces.
Cutting speed and feed matter more than brand for hole quality. Run slower on stainless and faster on aluminium, and use cutting fluid on steel to control heat and extend edge life.
Which Shank Type Should You Choose?
Shank style decides whether the bit slips. A 3-flat shank gives three ground flats that lock into a three-jaw chuck, reducing spin during high-torque cuts. A round shank is standard for drill presses and collet systems.
For portable drilling in metal and plastic, 3-flat shanks are the safer choice. For precision work in a machine chuck, round shanks index more accurately.
Spec Table: 9.7 mm-Class Metal Drill Bits
| Attribute | Typical Value | Notes |
|---|---|---|
| Cutting diameter | 9.7 mm (0.3819 in) | Between 3/8 in (9.525 mm) and 25/64 in (9.922 mm) |
| Point angle | 118° or 135° | 135° split point resists walking |
| Shank type | 3-flat or round | 3-flat reduces chuck slippage |
| Chuck capacity required | 10 mm (0.3937 in) minimum | Confirm drill chuck rating |
| Materials drilled | Metal, plastic, wood | Match speed and feed to material |
| Coating options | Bright, black oxide, TiN | Coating affects heat and wear life |
Types & Applications in Worldwide Markets
Global buyers typically source three families: general-purpose twist bits for metal and plastic, masonry bits for concrete and block, and long-reach installer bits for electrical work. Each family has different shank and point geometry.
In export markets, 50 Hz and 60 Hz power differences affect drill motor selection but not bit geometry — a 9.7 mm bit performs the same on either supply. What changes is documentation: customs classification, material declarations and packaging requirements vary by destination.
Selection Criteria
- Diameter and tolerance: confirm 9.7 mm (0.3819 in) meets your hole tolerance; step to 10 mm if clearance is tight.
- Shank type: choose 3-flat for portable drills, round for drill presses and collets.
- Point angle: 118° for general metal, 135° split point for hard or curved surfaces.
- Coating: black oxide or TiN for longer life in production drilling.
- Chuck capacity: verify a 10 mm (0.3937 in) minimum chuck opening.
- Duty cycle: high-volume work favours coated bits and coolant; occasional work suits bright-finish bits.
- Supply terms: confirm incoterms, lead time and export documentation for your market.
Product Comparison Ladder
| Product | Type | Size | Shank | Best For |
|---|---|---|---|---|
| DEWALT 3-Flat Shank Drill Bit Set (7-Piece) | Metal/wood/plastic set | 1/2 in, 1/4 in, 3/8 in, 3/16 in, 5/16 in | 3-flat | General construction and maintenance |
| EAGLE TOOL US Cable Installer Drill Bit, 1/4 in | Installer bit | 1/4 in dia, 18 in OAL | Serrated point | Pulling wire through studs |
| EAGLE TOOL US Cable Installer Drill Bit, 1/2 in | Installer bit | 1/2 in dia, 18 in OAL | Serrated point | Low-voltage wiring and conduit |
| DEWALT 3-Flat Shank Masonry Drill Bit 25-Pack, 1/4 in | Masonry bit | 1/4 in dia, 6 in OAL, 4 in depth | 3-flat | Brick, block and concrete |
| DEWALT 3-Flat Shank Masonry Drill Bit, 1/2 in | Masonry bit | 1/2 in dia, 12 in OAL, 10 in depth | 3-flat | Deep anchor and through-holes |
Step up the ladder when your material hardness, hole depth or duty cycle increases. A general-purpose set covers mixed metal, wood and plastic; installer bits add reach for electrical work; masonry bits handle concrete and block. For heavy production drilling, move to coated bits and coolant-fed setups.
Why Source from 3G Electric
3G Electric stocks 34+ products across drilling, electrical, power transmission and related categories, backed by 35+ years of industrial supply experience. We interpret your demand, confirm the right bit for your material and chuck, and quote with export documentation for Worldwide delivery.
Our specialist depth in combustion, pumps and controls sits alongside broad multi-category supply — so a single enquiry can cover drill bits, fasteners and the equipment they support. We are a distributor and supplier, not an authorised dealer for any brand.
According to DEWALT product literature for the DW5207 3-Flat Shank Drill Bit Set: "The 3-flat shank design provides secure retention in the chuck, reducing slippage during drilling."
Frequently Asked Questions
What is a 827EW9 metal drill bit 9.7mm used for?
A 9.7 mm (0.3819 in) bit drills clearance and pilot holes in metal, plastic and wood. It suits M10 fastener clearance, tapping pilots and cable pass-throughs. Use a 10 mm (0.3937 in) minimum chuck and match speed to material.
How do I choose between 3-flat and round shank bits?
Choose 3-flat shanks for portable hand drills to reduce chuck slippage under torque. Choose round shanks for drill presses and collet systems where concentricity matters more than grip. Both cut identically when properly secured.
What chuck size do I need for a 9.7 mm drill bit?
You need a chuck that opens to at least 10 mm (0.3937 in). Most 3/8 in and 1/2 in chucks qualify. Confirm your drill's rated chuck capacity before ordering, especially on compact cordless models.
Where can I buy 827EW9 metal drill bits in Worldwide?
3G Electric supplies 9.7 mm-class and equivalent drill bits across Worldwide markets with export documentation, incoterms-neutral terms and technical sizing support. Contact us for a quote, lead time and shipping options to your destination.
Does 50 Hz or 60 Hz power affect drill bit choice?
No. Bit geometry is independent of supply frequency. Frequency affects the drill motor, not the bit. Specify your drill's voltage and frequency separately when ordering equipment alongside bits.
Key Takeaways
- 9.7 mm equals 0.3819 in — a crossover size between 3/8 in and 25/64 in.
- 3-flat shanks reduce slippage in portable drills; round shanks suit drill presses.
- Confirm a 10 mm (0.3937 in) minimum chuck capacity before ordering.
- Coating and point angle drive service life more than brand alone.
- 3G Electric supports Worldwide sourcing with export documentation and technical help.
Ready to source? Contact 3G Electric for quotes, sizing assistance and technical support on 827EW9 metal drill bits and the full drilling range. We will confirm stock, lead time and export paperwork for your market.
