| Customized: | Customized |
|---|---|
| Standard: | DIN |
| Length: | Taper-length |
| Type: | Twist Drill Bit |
| Material: | High Speed Steel |
| Usage: | Wood Drilling, Well Drilling, Metal Drilling, Masonry Drilling |
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier DIN338 HSS-4241 25pc Roll Forged Black-oxided Twist Drill Bits set
| Type: | HSS twist drill bit set |
| Shank: | Straight Shank |
| Surface Finish: | Black oxide |
| Standard: | DIN338 |
| Hss Material: | 4241 |
| Product Technic: | Roll Forged |
| Ponit Angle: | 118° / 135° or Split point |
| Payment Term: | TT,or Western union |
we can supply different kinds material for you:
| HRC | CHEMICAL COMPOSITION(%) | International | DIN | ||||
| C | W | Mo | Cr | V | |||
| 60-62 | 0.9-1.0 | 1.5-2.5 | 0.5-1.2 | 3.8-6.0 | 0.5-1.0 | T-4241 | / |
| 62-65 | 0.88-0.98 | 3.5-4.5 | 2.5-3.5 | 3.8-4.4 | 1.3-1.7 | 4341 | W4 |
| 63-66 | 0.77-0.87 | 8.5-9.5 | 2.7-3.3 | 3.8-4.4 | 1.3-1.7 | 9341 | W9 |
| 63-66 | 0.8-0.9 | 5.5-6.75 | 4.5-5.5 | 3.8-4.4 | 1.75-2.2 | 6542 | M2 |
| 64-67 | 0.9-0.95 | 5.5-6.5 | 4.5-5.5 | 3.8-4.4 | 1.75-2.2 | Co5% | M35 |
| 66-68 | 1.05-1.15 | 1.15-1.85 | 9.0-10.0 | 3.5-4.25 | 0.95-1.35 | Co8% | M42 |
| HSS GRADE | HRC(Rockwell Hardness) |
| Mo2Cr4Vsi--4241 | 60-62 |
| Mo3Cr4Vsi--4341 | 62-65 |
| Mo3Cr4V---9341 | 63-66 |
| Mo5Cr4V2-6542/M2 | 63-66 |
| Mo5Cr4V2Co5-M35 | 64-67 HSS Co5% |
Q1: Do you have your own brand?
A1: Yes, the brand name is STARRY Tools, we can provide OEM services to our customers as well.
Q2: What's your target market?
A2: We mainly focus on Europe and South America right now.
Q3: What is the biggest advantage compared to the rivals?
A3: We are one of the strongest HSS Cutting tools supplier in China.
Q4: What is your MOQ?
A4: 500 pcs
Q5: What about the payment and delivery time?
A5: Delivery time: All items are ready in stock and can be sent within one week.
Payment: T/T.
100% protection for product quality, on-time shipment and payment
Q6: Can I get some samples?
A6: Yes, we are honored to offer you samples for quality check at your freight cost.
Q7: How does your factory do regarding quality control?
A7: Quality is priority. We always attach great importance to quality control from the very beginning to the end of the production. Every product will be carefully tested before it's packed for shipment.
Suppliers with verified business licenses
Audited Supplier 
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