405U49 Metal Drill Bit 2mm: The Complete Buyer's Guide for Worldwide Industrial Buyers
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The 405U49 Metal Drill Bit 2mm is a 2 mm (0.0787 in) diameter high-speed steel (HSS) twist drill for drilling pilot holes and small-diameter holes in steel, aluminium, brass and plastics. It is typically run in a drill press or hand drill at 1,500–3,000 RPM, and is most often bought as part of a multi-size set rather than as a single bit.
What is a 405U49 Metal Drill Bit 2mm?
A 405U49 Metal Drill Bit 2mm is a small-diameter, straight-shank twist drill ground from high-speed steel, sized at 2 mm (0.0787 in) to match a #47 or 5/64 in pilot requirement. It is the workhorse size for piloting #8 and M4 fasteners, drilling sheet metal up to roughly 3 mm (0.118 in) thick, and starting holes before stepping up to larger diameters.
Because 2 mm bits are thin and break easily, buyers in the Worldwide market usually source them in multi-size sets or 10–25 piece packs rather than individually. DEWALT and EAGLE TOOL US both supply 2 mm-class and adjacent sizes through 3G Electric's 34-product drill bit inventory.
Definition: A 405U49 Metal Drill Bit 2mm is a 2 mm (0.0787 in) diameter high-speed steel twist drill with a 118° or 135° point, used for pilot holes and small-diameter drilling in metal, plastic and wood. It is specified by diameter, point angle, coating and shank type.
How does a 2 mm metal drill bit work?
The bit's chisel point cuts on contact, the two flutes lift chips out of the hole, and the margin guides the bit straight. At 2 mm diameter, the web is thin, so runout and feed pressure matter more than on larger bits — excessive pressure snaps the bit rather than cutting.
For hand drilling, a 3-flat shank (as used across the DEWALT range) prevents the bit spinning in a keyless chuck. For drill-press work, a plain cylindrical shank is fine and cheaper.
Which 2 mm-class drill bit type suits your application?
- HSS twist bit (118° point): general-purpose metal, wood and plastic; the standard 2 mm bit.
- HSS with 135° split point: harder steels and stainless; reduces walking on smooth surfaces.
- TiN or black-oxide coated: longer life in production drilling; coating does not change diameter.
- 3-flat shank: hand-drill and impact-driver use where chuck slip is a problem.
- Installer / cable bit: long-reach bits for pulling wire through studs — a different job from a 2 mm pilot bit.
Spec table: 2 mm-class and adjacent drill bits
| Attribute | Typical 2 mm metal bit | DEWALT 3-flat shank set | EAGLE TOOL US installer bit |
|---|---|---|---|
| Diameter | 2 mm (0.0787 in) | 3/16 in to 1/2 in (4.8–12.7 mm) | 1/4 in (6.35 mm) |
| Overall length | 49 mm (1.93 in) | Set-dependent, 2–6 in | 18 in (457 mm) |
| Shank type | Straight cylindrical | 3-flat | 3-flat / hex |
| Point angle | 118° | 135° split point | Serrated point |
| Material | HSS (M2) | HSS | HSS |
| Primary use | Pilot holes, sheet metal | Metal, wood, plastic | Wire & cable pulls |
Note: the 2 mm column reflects standard industry values for a 405U49-class bit; confirm exact dimensions against the supplier datasheet before ordering.
Selection criteria: how to choose a 2 mm metal drill bit
- Diameter and tolerance: confirm 2 mm (0.0787 in) nominal and check whether you need H7 or general tolerance for the pilot.
- Point angle: 118° for general metal, 135° split point for stainless and hard alloys.
- Coating: bright finish for aluminium, TiN or black oxide for steel and production runs.
- Shank: 3-flat for hand drills and impact drivers; cylindrical for drill presses and collets.
- Pack size: 2 mm bits break often — buy 10–25 piece packs or a set that includes 2 mm.
- Duty cycle: continuous production drilling needs coated bits and coolant; occasional maintenance work does not.
- Export and standards: confirm DIN 338 or ANSI dimensions and that the supplier provides export documentation for Worldwide delivery.
Product selection ladder: drill bits in stock at 3G Electric
| Level | Product | Size | Shank | Best for |
|---|---|---|---|---|
| Entry — general metal/wood/plastic | DEWALT 3-Flat Shank Drill Bit Set, 7-Piece | 3/16 in to 1/2 in (4.8–12.7 mm) | 3-flat | Maintenance and general construction |
| Mid — masonry, small diameter | DEWALT 1/8 in 3-Flat Shank Masonry Drill Bit, 25-Pack | 1/8 in (3.2 mm), 3 in OAL | 3-flat | Concrete, brick, block |
| Mid — masonry, medium diameter | DEWALT 1/4 in 3-Flat Shank Masonry Drill Bit, 25-Pack | 1/4 in (6.35 mm), 6 in OAL | 3-flat | Anchors in brick and block |
| Heavy — masonry, large diameter | DEWALT 1/2 in 3-Flat Shank Masonry Drill Bit | 1/2 in (12.7 mm), 12 in OAL | 3-flat | Through-holes in concrete |
| Specialist — cable installation | EAGLE TOOL US 1/4 in Cable Installer Drill Bit, Serrated Point | 1/4 in (6.35 mm), 18 in OAL | 3-flat | Pulling wire through studs |
Step up the ladder when your hole diameter, material hardness or reach requirement exceeds the entry set. For 2 mm pilot work, the DEWALT 7-piece set covers the small end; for masonry or cable pulls, move to the dedicated masonry or installer bits.
Why source 2 mm drill bits from 3G Electric?
3G Electric stocks 34 drill bit and related products across DEWALT and EAGLE TOOL US lines, backed by 35+ years of industrial supply experience. We interpret your demand, confirm the right diameter, point angle and shank, and quote in USD with export documentation for Worldwide delivery. Our specialist depth in combustion, pumps and controls sits alongside a broad maintenance and tooling range — so a single enquiry can cover a mixed order.
Frequently asked questions
What is a 405U49 Metal Drill Bit 2mm used for?
A 405U49 Metal Drill Bit 2mm is used for pilot holes ahead of larger bits, small-diameter holes in sheet metal up to about 3 mm (0.118 in) thick, and precision work in aluminium, brass and plastics. It is the standard size for piloting #8 and M4 fasteners.
What RPM should I run a 2 mm metal drill bit at?
For mild steel, run a 2 mm HSS bit at roughly 1,500–3,000 RPM with light, steady feed and cutting fluid. Aluminium tolerates higher speed; stainless requires lower speed and more coolant to avoid work-hardening.
118° vs 135° point — which is better for a 2 mm bit?
118° is the general-purpose choice for mild steel, aluminium and plastics. 135° split point is better for stainless and hard alloys because it resists walking and cuts with less pressure — important on a thin 2 mm bit.
Where can I buy 2 mm metal drill bits in the Worldwide market?
3G Electric supplies 2 mm-class and adjacent drill bits worldwide with USD pricing, export documentation and incoterms-neutral shipping. Contact us with your diameter, point angle and pack quantity for a quote.
What is the lead time for drill bits shipped internationally?
In-stock items typically ship within days of order confirmation; international transit varies by destination and incoterm. 3G Electric provides export paperwork and can quote air or sea freight for Worldwide delivery.
Can I use a 2 mm metal bit on wood or plastic?
Yes. A 2 mm HSS twist bit drills wood and most plastics cleanly, though dedicated brad-point or plastic bits give cleaner entry and exit. Use lower RPM and light pressure to avoid melting or splintering.
Key takeaways
- The 405U49 Metal Drill Bit 2mm is a 2 mm (0.0787 in) HSS twist bit for pilot holes and small-diameter drilling.
- Match point angle (118° vs 135°), coating and shank type to your material and drill.
- Buy 2 mm bits in sets or 10–25 piece packs — they break easily at this diameter.
- 3G Electric stocks 34 drill bit products from DEWALT and EAGLE TOOL US with worldwide export support.
- Quote in USD, confirm DIN 338 or ANSI dimensions, and request export documentation for international orders.
Ready to order? Contact 3G Electric for quotes, sizing assistance and technical support on 2 mm metal drill bits and the full DEWALT and EAGLE TOOL US range. We interpret your demand, source the right bit and ship worldwide.
