Brand: behappy
Warranty Period: 3 Years
Support Customization: Oem, Odm
Species: Twist Drill Bit
Application: Metal Drilling
Surface Treatment: Other
Productivity: 2 Million PCS Per Month
Transportation: Ocean,Land,Air,Express
Supply Ability: 2 Million PCS Per Month
Payment Type: L/C
Angle function and characteristics of standard Twist Drill 1. Helix Angle β The spiral Angle is the Angle between the outermost spiral line on the spiral groove of the bit and the axis of the bit after it is unfolded into a straight line. As the lead of each point on the spiral groove is the same, so the spiral Angle at different diameters of the Drill Bit is different, the spiral Angle at the outer diameter is the largest, the closer to the center of the spiral Angle is smaller. When the screw Angle increases, the rake Angle increases, which is beneficial to shoulder arrangement, but the bit stiffness decreases. The screw Angle of standard twist drill is 18° ~38°. For the drill with smaller diameter, the screw Angle should be smaller to ensure the stiffness of the drill.
HSS Titanium Coated Twist Jobber Length
Model NO. GMK305
| Product Name | HSS Twist Drill Bits |
| Material | M42, M35, 6542(M2), 9341, 4341, 4241 |
| Diameter | 1-20mm |
| Standard | DIN338 |
| Color | Titanium Coated, bright finish, black oxide, rainbow, amber finish etc. |
| Package | Plastic box,opp bag,metal box,plastic tube |
| MOQ | 1pc for sample testing |
| 200pcs for mass production | |
| Delivery time | 15~45 days, according to order quantity |
| Application | Copper, iron, stainless steel, aluminum |
| Payment terms | T/T, D/P, L/C, Paypal, Western Union, ect. |
| Certificated | BSCI |
| Unit price | Contact us to get latest price (Larger quantity, more discount) |
Product Categories : Drill Bit > Twist Drill Bit
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