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3 China 
2 UK 
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Din338 Twist Drill Bits - China
price: contact company for price
DIN338 Twist Drill Bits HSS-R HSS-G HSS Cobalt
Short twist drills have a rank angle (sometimes referred to as angle of twist) of 27°, a point angle between 118° and 135° as well as a cylindrical shank.
Type N is suitable for standard chipping materials.
A distinction is made between roll forged and fully ground twist drills, depending on the production process.
When producing roll forged drills, the slugs are heated and formed into spiral coils.
Fully ground drills get their spiral coil cut while being fully hardened.
For a better distinction between the diff erent types of twist drills, the following finishes are assigned to the different drills: Standard DIN338
Form Type N
Material HSS-R/HSS-G/HSS-E
Tolerance H9/H8
HRC 61-66
Surface Bright/Black/Golden
Point Angle 118° for HSS Rolled Drill Bits 135° Split Point for HSS-G/HSSE from 3.0mm
Helix Angle 20-30°
Cutting Direction Right
Company Contact:
- Posted By: Hangzhou GSR-Threads Tools Co.,Ltd
- Phone: 0571-82688363
- Address: No. 381, Tianjiali, Tianfeng Village, Yiqiao Town, Xiaoshan, Hangzhou , Zhejiang , China
- Email:
- Website: https://www.gsrthreads.com/
Published date: January 13, 2021
- Business Description: Ms.
Yanli Zhang, the current founder of the company, was one of the suppliers of Mr.
Hartmut Blombach, another shareholder of the company, the owner of GSR in Germany.
After three days and nights of negotiation on one promotion order about taps and dies, the two sides have established a deep friendship.
And in the subsequent cooperation, they have created a deep trust between each other.
Our Products:
- Din5157 Bsp Hand Tap Set 2pcs Hss G
- Adjustable Tap Wrench Zinc Casted For Hand Tapping
- Hexagon Die Nut Din 382 Hss Metric
- Die Guide For External Thread Cutting
- Wire Thread Insert
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