Good quality High efficiency ~ left hand drill bits & HF drill bit

Ref Price:
Loading Port:
Shanghai
Payment Terms:
TT OR LC
Min Order Qty:
100 pc
Supply Capability:
100000 pc/month

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:

Specifications

1. Offers a complete line of Metal Twist Drill Bits, such as straight shank, taper shank, etc;

2. Process: fully ground;

 

Dimensions

1. Drill diameter - The values indicated in the relevant dimensional standards apply in respect of the diameter of twist drills.

Test point: On the lands at the corners

Testing equipment: micrometer

 

2. Tapering of diameter - The diameter of twist drills usually reduces from the drill tip towards the shank in the area of the flutes.

Test values: The taper on diameter amounts to 0.02 to 0.08mm over a length of 100mm.

Test point: At the outside diameter on the land.

Testing equipment: micrometer and indicating measuring instruments.

 

3. Parallel shank - Tolerance for shank diameter f11, Tolerance for roundness and parallelism 0.02mm for the shank length.

 

4. Length - The tolerance of length for the total length corresponds for the degree of accuracy "very coarse" according to DIN standards. The flute lengths given in the relevant dimensional stands are minimum dimensions.

 

5. Point angle

Test value: σ=118°; σ=135°

Test point: At the cutting edges

Testing equipment: Universal bevel protractor indicating measuring instruments.

 

Materials and hardness

Materials - M2, M35, M42, 9341, 4341, 4241, etc

Hardness - HSS HRC63-66; HSSCo HRC64-68

Test point: On outside diameter on the land or adjacent relieved land.

Test equipment: Hardness Tester.

 

Marking

Twist drills with diameter 3mm and upwards shall be marked with:

1.Diameter;

2.Material: (HSS, HSSCo);

3.Additional and/or differing marking by agreement.

 

Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:The bathroom hardware should be stainless steel or Aluminum Alloy it?
The bathroom is wet products acid solution in more places or made of stainless steel, stainless steel products, good is more resistant to corrosion, Aluminum Alloy as long as it is light weight, to prevent corrosion or worse than stainless steel.
Q:What do you do at a hardware store?
Hardware industry refers to the gold, silver, copper, iron, tin five metal materials, hardware is the mother of the industry; the basis of national defense, hardware products are usually divided into two major categories of hardware and hardware. Big hardware includes steel plate, steel, flat iron, steel bar, universal channel iron, I-iron and various types of hardware, building hardware, tin, lock nails, wire, steel wire, steel wire cutting, home hardware, tools etc.. On the nature and use of hardware, it should be divided into iron and steel materials, non-ferrous metal materials, machinery parts, transmission equipment, auxiliary tools, working tools, construction hardware, household hardware and other eight categories
Q:How many kinds of hardware are there in this industry?
Locks, handles, doors and windows, hardware, family decoration, hardware, plumbing hardwareArchitectural decoration, hardware, tools, kitchen hardware,Home appliances, mechanical parts, furniture hardware fittings
Q:What kinds of hardware fittings can be divided into?
Hardware accessories can be classified according to standard and non-standard parts. This classification is general, but the general classification is like this, and there are different hardware used in different industries, there are different categories.
Q:Does hardware affect the tightness of doors and windows?
The tightness of doors and windows mainly refers to the resistance to wind pressure, air tightness and water tightness.
Q:What's the hardware in the wardrobe industry?
Hinge screw handle drawer rail foot stainless steel stainless steel tube for fixing door hinge screws are used to handle the fixed hinge rail for mounting feet for stainless steel drawer cabinets or cabinets increased overhead of stainless steel pipe used for hanging trousers it installed in the cupboard
Q:How to buy some ardware
Professionals said that, on the market of aluminum magnesium alloy and alumina two main Aluminum Alloy common materials, the price difference of nearly 1/3, due to alumina and aluminum and magnesium alloy surface looks almost, it is quite difficult for consumers to distinguish, but still can be judged from the handle, water etc.. Aluminum magnesium alloy material is relatively heavy, the surface is smooth, water stains are not easy to trace, good toughness. And the surface of alumina material is rough, easy to black or trace of water stains. At the same time, if there is a slight scratch on the surface, the aluminum magnesium alloy material can be easily wiped away, while the alumina is difficult to remove. In addition, the door handle will also vary greatly because of the distance and the type of the door.
Q:What kind of hardware do you have?
Hardware refers to five metals. Hardware word first appeared in the "Wu Yue" - "spring and Autumn" four Lu: "Chen Wen Yue often make ou Yezi sword making five pieces...... a reed, hardware Ying, sun jing. According to the "Han Shihuo Zhi" on the 'gold, knife, turtles, shellfish "note: Kim," five gold, yellow, gold, silver, white, red, green, copper, lead, iron, black. "Modern Chinese dictionary explains:" hardware refers to gold, silver, copper, iron, tin, generally referred to as metal. Today's hardware is commonly used as a metal or copper, iron and other products collectively. The further application of metal has played an important role in the development of human civilization, society and history. Metal products appear in every corner of economic life, political life and military activities. Such as Zhejiang, Yongkang, since ancient times has been known as "hundred workers of the township", hardware, handicraft industry is a long history. Since the Southern Song Dynasty had to make a living in Yongkang, go out to travel extensively, coppersmith blacksmith, history of early "metal craftsmen go Quartet, Fu County from Kang". History into modern industrial society, metal hardware industry is the rapid development of hardware industry, which has played an important role in the development of national economy, hardware has become an indispensable link in the industrial manufacturing industry.
Q:Want to know the function and choice of cabinet hardware parts
Cabinet hardware accessories are divided into functional and decorative hardware kitchen cabinets in two types, wet, smoky environment, selection of hardware fittings should be able to withstand the test, not easy to rust, corrosion, damage.
Q:What do you learn before you sell hardware?
What do you learn before you sell hardware? Good after-sales serviceIn fact, doing business can attract repeat customers, in addition to good quality, that is, there is good after-sales service. Good customer service service determines whether customers whether your shop can go long, single, small single are to be the same warmth. Customer satisfaction with your service, he will unknowingly for you to advertise your shop. Let customers independently achieve a word of mouth publicity effect, this is the fastest way to success.What do you learn before you sell hardware? Do the above steps and you can start a hardware store!

1. Manufacturer Overview

Location
Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information  
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range