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

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Shanghai
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TT OR LC
Min Order Qty:
100 pc
Supply Capability:
100000 pc/month

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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.

 

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Q:What are the hardware parts of the door?
Handle, hinge, fasteners (bolts, nuts), lock, door stopper, seal, such as cat's eye
Q:What are door hardware included?
Layering (copper, aluminum, PVC)Any of various metal and non-metallic fittings installed on the door of a building. Play a supporting role when the door is open and closed. The surface is usually plated or coated, and has the characteristics of firmness, durability, flexibility, economy, beauty and so on.
Q:Does hardware affect the tightness of doors and windows?
Let me put it briefly.The main window is divided into windows, windows and wood windows and other types of.It is made of glass, section bar, hardware, sealing strip and so on. The sealing of doors and windows is made up of all parts, including the quality of the glass, the quality of the profiles, the quality of the sealant (mainly), the quality of the hardware, the quality of the doors and windows.The tightness is mainly related to the sealing strip they use. For example, the common casement window adopts three yuan ethylene propylene sealant strip, while the sliding window adopts the sealed top.
Q:Do their own cabinets, cabinets hardware where can I buy?
Larger building materials city has a professional hardware office, where the hardware is still relatively complete, you can go and have a look.
Q:What's drawing design in a hardware factory?
Mapping is the first to return the drawings and to use software to measure them. Three-dimensional map, popular is the use of people with visual difference and optical refraction principle in a plane so that people can directly see a three-dimensional painting, painting things can be protruded from the outside of the screen, which can also be hidden, to give people a strong visual impact. This is mainly the use of light, to reflect the actual situation, the contrast of light and shade, and 3D picture is the real simulation of the human eye to see the world principle, using optics refraction produced, it can make sense to see the eyes of objects on the left, and the three-dimensional relationship.
Q:What does "hardware delivery" mean?
Electricity, as the name suggests, is the carrier used in AC power transmission process, switch, or isolation current to conduct electricity such as knife, cable, wire, and AC power distribution equipment, accessories and so on."Hardware" refers to the gold, silver, copper, iron, tin five metal materials, said, "hardware is the mother of the industry"; the basis of national defense, hardware products, usually only divided into large hardware and hardware two categories. 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, iron and steel materials, non ferrous metal materials, machinery parts, transmission equipment, auxiliary tools, working tools, construction hardware, household hardware and other eight categories are to be considered
Q:Please tell people where can to buy genuine hardware accessories?
TX should choose to go to large stores to buy, quality and service to protect some.
Q:What are the detailed classifications of hardware tools?
Hardware category: Decoration / lamps / hardware / security / bathroomSpecific categories: lock bit hardware tools hardware cutter blade sawing machine hardware lock scissors glasses box hardware cloth hardware fixture terminal electric tool stamping column pneumatic wrench screwdriver kit hook scaffolding hinge combination tools hand tools casters stainless steel products opener brush screwdriver Paddleball hardware products Hardware Hardware ball mill grinding machine electronic hardware rack hydraulic components of garden tools and precision metal film sawing machine polishing wheel rasp tapping machine drilling machine gun knife pliers hydraulic cylinder hydraulic cylinder barbecue net fluorescent lamp tweezers brush roller screwdriver blade grinding machine reamer electric knife ring seal black wire cloth broom strand paint brush vise rivet gun construction tools Aluminum Alloy ladder storage It is hot melt adhesive gun pneumatic nail tool industrial casters hole hot-air gun hydraulic tools wine bottle opener pliers glass sand rubber spring diamond bit sports leisure goods titanium claws fruit knife automatic spray gun hydraulic tongs hydraulic pickaxe folding ladder joint waterproof casing blowing dust gun glue gun electric winch hook rubber scraper diamond pick aluminum hydraulic hose ladder construction and drilling machine vibration mill butter cigar scissors fork spade skull lace shear shear manual hardware hydraulic wrench alloy tube brake casters no fan power construction fastener pipe machine caster casters bearing domestic window brush knife ladder window scraping high-temperature casters snow brush mower blade diamond thin-wall drill pressure spray nozzle of light metal casters damping caster shovel rechargeable electric clipper transport tool accessories
Q:How many kinds of hardware are there in this industry?
Hardware can actually be divided into tools and hardware two categories;The tools below can be subdivided:Manual tool (brush, scissors, pliers, screwdriver, wrench, hammer, file, tap die, pump, etc.) (saw blade, a chainsaw, etc.)Pneumatic tools (pneumatic wrench, pneumatic scissors, drilling, etc.)Electric tools (electric polishing machine, electric drill, electric hammer, electric wrench, electric scissors, air guns and etc.)Auto repair toolsConstruction equipment and toolsGaugeGardening tools and equipmentDiamond toolsAbrasives, abrasive (grinding wheel, grinding head, grinding block, sand paper, Whetstone, polishing wheel, grinding agent, polishing paste, etc.);Hardware subdivided into:Hardware fittings (hook, steel ball, pulley, nozzle, universal wheel, rigging, etc.)Construction hardware (locks, fittings, doors and windows, hardware, etc.)Mechanical hardware (bearings, dies, springs, valves, cutting tools and clamps, pneumatic components, etc.)Daily hardware (knife, scissors, etc.)
Q:What is a hardware cooker?
Hardware cookware refers to a cooker made of metal products (including metals and other materials).

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