High Speed Steel:
High speed steel construction provides ultimate durability, the cutting edge is hardened and honed for sharpness, chatter-free design with staggered cutting teeth ensure the precise countersinking and hole smooth clean.
Twist Design:
The split point tip and twist design increases cutting speed while easy self centering prevents walking. Say bye to all those chips and particles, with the twist design the drill bit can quickly clears them out, and leaves a clean, smooth hole.
Notice:
1. Please keep cool and gentle using, the working life of the twist drill bits can be largely prolonged by proper usage.
2. Not For Use On Concrete, Masonry, Stainless Steel.
3. Please check the detail information carefully before purchasing.
4. Please allow 1-2mm in size measurement chart for variance due to manual measurement.
5. Please excuse us from any possible typos and unintentional misinterpretations Your satisfaction is our utmost concern, please feel free to contact us for any questions and concerns.
- Bright finish: Classic 4241 High Speed Steel construction with Bright Finish for proven capability and durability.
- Strength & Hardness: Made with HSS 4241 steel, Rock wall Hardness Level HRC 61-62
- Package & Size: 10 Pieces in a plastic bag,or in plastic box
- Professional & DIY Use: For use on metal, wood & plastics. Not For Use On Concrete / Masonry / Stainless Steel. Perfect match for workshop or service vehicles.
- 118°Twist Design: Increases cutting speed with self-centering and prevents walking, clears chips and particles faster.
DIN338 HSS-4241 Roll Forged Black-oxided Twist Drill Bits
Type: | HSS twist drill bit |
Shank: | Straight Shank |
Surface Finish: | grey finished |
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 |

SIZE OF THE HSS DRILL BIT:
(SIZE) | TOTAL LENGTH | FLUTE LENGTH |
1.0 | 34 | 12 |
1.5 | 40 | 18 |
2 | 49 | 24 |
2.5 | 57 | 30 |
3 | 61 | 33 |
3.2 | 65 | 36 |
3.5 | 70 | 39 |
4 | 75 | 43 |
4.2 | 75 | 43 |
5 | 86 | 52 |
5.2 | 86 | 52 |
5.5 | 93 | 57 |
6 | 93 | 57 |
6.5 | 101 | 63 |
7 | 109 | 69 |
7.5 | 109 | 69 |
8 | 117 | 75 |
8.5 | 117 | 75 |
9 | 125 | 81 |
9.5 | 125 | 81 |
10 | 133 | 87 |
10.5 | 133 | 87 |
11 | 142 | 94 |
11.5 | 142 | 94 |
12 | 151 | 101 |
12.5 | 151 | 101 |
13 | 151 | 101 |
we also supply different kinds hss drill bit:
PACKING OF THE HSS DRILL BIT:
Plastic tube,Blister Packing,PVC bags with card,Metal Box and so on.
FACROY WAREHOUSE:




FAQ:
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.