5% Cobalt Drill Bit Set (1/16-3/8 Inch, 21PCS) for Stainless Steel, Hard Metal, Cast Iron, Plastic and Wood, M35 Hss Heavy Duty Twist Steel Drill Bits Index.
- 【Premium 5% Cobalt Steel with 68 HRC】 This Fully Ground Cobalt Drill Bits Set are Made with 5% Ture Cobalt. Although the Cost and Price are Slightly Higher, With a Useful Life,Heat,Wear and Chip Resistance up to 3 Times Longer than the Average Product.
- 【3X Efficiency + 3X Tool Life】This Cobalt HSS Drill Bits Set is Typically Capable of Running 3 Times Faster. Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes.
- 【Split Point Design with Unparalleled Precision】This Heavy Duty Work Drill Bits Kit is Suitable for Steel, Stainless Steel, Cold Rolled Steel, Hard Metals, Aluminum Alloy, Hard Wood, and Plastic, and Drilling Out Bolts Studs and Screws.
- 【Sturdy and Durable Metal Case】Different from the General Metal Case, This Drill Bits Case is Made of Q235 Cold Rolled Steel Plate, which Can be Opened and Closed Smoothly to Take the Drill Bits out at Any Time.
- 【21 Pieces Jobber Length Industrial Drill Bits Includes】:1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, 1/4, 17/64, 9/32, 19/64, 5/16, 21/64, 11/32, 23/64, 3/8 [DIA 1/64 Inch Increments]
Estimated shipping
Select a product to estimate shipping.Why Choose Premium STROTON Cobalt Drill Bits?
Researches have shown that compared with HSS without cobalt, HSS with cobalt has higher temperature resistance, red hardness, wear resistance and heat treatment response.
Red hardness, which means that the drill bits hardened steel can maintain hard at 860-880°C .
68 HRC,it means that the drill bits has 3X cutting ability and 3X durability.
This drill bits set is made of True Premium Cobalt (80,000 dollars per ton).
This drill bits set definitely have more cobalt in them than the "Cobalt" bits that HF sells--which are just Cobalt coated or only a tiny amount of cobalt tipped.
Compared with ordinary high speed steel, 5% cobalt provides better heat and wear resistance,and Hold up Better.
Split Point design tip starts drilling immediately with less force and eliminates "walking" across the work surface.
Ideal for Stainless steel,Mild Steel,Iron,Hardmetal,Aluminum,Copper,Plastic and Hardwood.
The drill bit can be used for mechanical maintenance, such as drilling out bolts and screws.
Non-vertical use may cause the drill bit to break.
Using a drill press with sufficient power will make drilling easier.
Too high speed may burn the bit tip.
Drill diameter≤3/16,RPM(1000~700)
3/16-3/8,RPM(700~350)
3/8-1/2,RPM(350~200)
Add stainless steel tapping oil or engine oil to prevent the stainless steel from overheating.
It also works adding some vinegar,soy sauce or water.
The drilling shall be started slowly by applying force slowly and gently until the drill bit starts chipping.
Product details
Specifications
| Main Specification | |
|---|---|
| Surface Recommendation | Steel, Metal, Stainless |
| Cutting Diameter | 1/8, 3/16, 1/4, 5/16, 5/64, 7/64, 5/32, 1/16, 3/32, 9/64, 7/32, 11/32, 11/64, 13/64, 15/64, 17/64, 9/32, 19/64, 21/64, 23/64, 3/8 inches See more |
| Material | Cobalt Steel, High Speed Steel (Hss), Cobalt |
| Manufacturer | STROTON Ltd |
| Unit Count | 1 Count |
| Point Style | Split Point |
| Shank Type | (1/16-11/64: Round Shank) (3/16-3/8: 3-Flat Shank) |
| Tool Flute Type | Spiral |
| Brand | STROTON |
| UPC | 673498823361 |
| Cutting Angle String | 135 Degrees |
| Number of Pieces | 21 |
| Finish Type | Uncoated |
| Item Weight | 16 Ounces |
| Product information | |
|---|---|
| Number of Packs | 1 |
| Set Name | STROTON 5% Cobalt Drill Bit Set |
| Technical Details | |
|---|---|
| Material Type | High Speed Steel (HSS), Cobalt Steel, Cobalt |
| Part Number | M35 Co5 1/16"-3/8" (21PCS) |
| Number of Flutes | 2 |
| Style | |
|---|---|
| Finish Types | Uncoated |
| Others | |
|---|---|
| Product Type | Jobber Drill Bits |
| Minimum Bore Diameter | 0.38 inches |
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