1. Description
STARRY HSS Drill bits are cutting tools used to create cylindrical holes,
almost always of circular cross-section. Bits are held in a tool
called a drill, which rotates them and provides torque and axial
force to create the hole. Specialized bits are also available for
non-cylindrical-shaped holes.
2. Produce Process:
3. Detail Specification:
| HSS Drill Bits |
| Manufacturing | Surface Finish | Sharpening |
| White | Black | B&W | Tin Coated | Amber | Black&Gold | 118° | 135°S.P. | Turto Max | 118°S.P | Web Thinning |
| Rolled Forged | | √ | √ | | | | √ | √ | | √ | |
| Rolled Polished | √ | √ | √ | √ | √ | | √ | √ | | √ | |
| Fully Ground | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | |
| Milled | √ | √ | √ | √ | | √ | √ | | | | √ |
| Standards | DIN338,DIN1897,DIN340,DIN1869,DIN345,DIN333 |
| Jobber length,ScrewMachine Length,Taper length,Aircraft Extension |
| Material | HSS4241,HSS4341,HSS6542(M2),HSS CO5%(M35),HSS CO8%(M42) |
| Shank | Straight shank(Parallel shank), Reduced Shank, hex shank,1/4″Quick
change shank,3Flats shank,1/2"shank,3/8"shank |
| Helix Angle | Type N,Type W,Type H |
| Rotating | Right Hand,Left Hand |
| Flute | Normal,parabolic |
| d1 | l1 | l2 |
0.5 | 22 | 6 |
| 1 | 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 |
| 4.5 | 80 | 47 |
| 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 |
4. Hardness & Surface:
| Material | Hardness(HRC) |
| HSS-4241 | 60-62 |
| HSS-4341 | 62-63 |
| HSS-9341 | 63-66 |
| HSS-M2 | 63-66 |
| HSS-M35 | 64-67 |
5. Application:
STARRY Drill bit can drilling holes on
aluminium,plastic,wood,copper,iron,stainless steel.
6. Packing:
1. 5/10 pieces packind in PVC bag, then in white paper box, then in
carton. ( default bullk packing)
2.Plastic tube,Blister Packing,PVC bags with card,Metal Box and so
on.
7. Shipping Details:
- Samples or small order will be delivered by
courier,DHL,FEDEX,TNT,etc
- Normal order will be delivered by sea.
8. Factory:
XRTOOLS are professional in HSS cutting tools about 15 years old,we
accumulated abundant experience of manufacture, and have more
ability of investigation and exploitation,as well as leading test
equipment,So now some of world famous tool traders punchase from
us.hope we can working together in near future.
9. 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.
