Product Details
Place of Origin: JIANG SU CHINA
Brand Name: Starry
Certification: ISO9000
Model Number: 7.5mm
Payment & Shipping Terms
Minimum Order Quantity: 300Pcs
Packaging Details: plastic box,pvc bags,Single piece with blister card package
Delivery Time: 30-45days
Payment Terms: T/T, L/C
Supply Ability: 3000000pcs per mouth
Product Name: |
Hss Cobalt Drill Bits Hss Drill Bits Metal |
Material: |
M35 |
Standard: |
DIN 338 |
Process: |
Fully Ground |
Hardness: |
HRC 61 - 66 |
Surface Finished: |
Amber |
Application: |
Copper, Carbon Steel, Cast Iron |
Product Name: |
Hss Cobalt Drill Bits Hss Drill Bits Metal |
Material: |
M35 |
Standard: |
DIN 338 |
Process: |
Fully Ground |
Hardness: |
HRC 61 - 66 |
Surface Finished: |
Amber |
Application: |
Copper, Carbon Steel, Cast Iron |
7.5mm Amber DIN 338 fully ground high Speed Steel Step Drill Bit
Description:
COBALT STEEL - Manufactured from M35 grade cobalt steel, with molybdenum and cobalt added to creates a hardened alloy,
measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, ideal for repeated drilling in metalworking
It is often used in power-saw blades and drill bits. It is superior to the older high-carbon steel tools used extensively through the 1940s in tha
t it can withstand higher temperatures without losing its temper (hardness). This property allows HSS to cut faster than high carbon steel, hence the name high-speed steel. At room temperature, in their generally recommended heat treatment, HSS grades generally display high hardness (above Rockwell hardness 60) and abrasion resistance (generally linked to tungsten and vanadium content often used in HSS) compared with common carbon and tool steels.
Detail:
|
Item Name: 7.5mm Amber DIN 338 fully ground high Speed Steel Step Drill Bit |
|
| Material | M35 |
| Shank | Hex Shank |
| Process | Full ground |
| Surface finished |
Amber |
| Hardness | 65-67 HRC |
| Color | cooper-colored |
| Size | 7.5mm |
|
Flute Type
|
|
| Total Length |
125mm
|
| Flute Length |
81mm
|
| Usage | steel, Drilling holes in metal |
| Customize | Accepted |
M35 Drill bits Size List :
| Size | Limit | Overall Len | Thread Len | Size Code |
| M1.6x0.35 | 6h | 40 | 8 | 1 |
| M1.7x0.35 | 7h | 40 | 8 | 2 |
| M1.8x0.35 | 8h | 40 | 8 | 3 |
| M2x0.4 | 6h | 45 | 9 | 4 |
| M2.2x0.45 | 6h | 50 | 9 | 5 |
| M2.6x0.45 | 6h | 50 | 9 | 7 |
HSS M35 Cobalt Parallel Shank Drill Bits Application
fit for standard drill chucks and regular round collet chucks Manufactured with all kinds of drill bit for metal,
such as HSS Twist Drill, HSS Center Drill Bit, HSS Step Drill Bits, Reduced Shank Drill Bit, Taper Shank Drill Bits, and etc.
Made into HSS Twist Drill Bits; HSS Step Drill Bit; Taper Shank Drill Bits; Reduced Shank Drill Bits; Bi-metal Hole Saw
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