Product Categories
(Total 12 Products for 5pc Drill Bit Set)
5PC HSS Roll-Forged Twist Drill Bit
Twist drill is a tool used to drill round holes of workpiece by rotating cutting of its relative fixed axis. Because of its capacity chip groove into spiral shape and shape like hemp and named. Spiral grooves have 2, 3 or more grooves, but 2 grooves are the most common. Twist drill specifications? What about twist bit...
5PCS Tin-coated Step Drill Bit Set
We are the professional manufacturer of hardware tool accessories, specialized in drill bits, hole saw, cutting discs and various tool sets. Besides, we also supply kinds of hand tools, include measuring tapes, caulking guns, cable ties,etc. We have our professional technicians, advanced production machines and an...
5PCS/Set HSS Roll-Forged Twist Drill Bit (GMD-006)
The cutting Angle of the standard ordinary twist drill is 118, the bevel Angle of the cross edge is 40° ~ 60°, and the back Angle is 8° ~ 20°. Due to structural reasons, the rake Angle is large at the outer edge and gradually decreases to the middle, and the transverse edge is negative rake Angle (up to about -55°),...
Ground Twist Drill Bit Set 25PCS Set
Electric hammers are used to make holes in hard materials such as concrete, brick and stone. Electric hammer is a kind of electric drill, mainly used for drilling concrete, floor, brick wall and stone. Professional in the wall, concrete, stone above the drilling, and multi-functional electric hammer, adjust to the...
Twist drill is a tool used to drill round holes of workpiece by rotating cutting of its relative fixed axis. Twist drill is simple handle + spiral shape; Because of its capacity chip groove into spiral shape and shape like hemp and named. Spiral grooves have 2, 3 or more grooves, but 2 grooves are the most common....
25PCS HSS Fully Ground Twist Drill Bit Set
What are the advantages of standard twist drills? (1) There is a spiral groove on the drill bit and it forms a front without grinding; (2) The edge of the drill has a good guiding effect and the axis is not easy to skew; (3) When cutting, the double-edge is symmetrical, the force is balanced, and it is not easy to...
25PC HSS Cobalt Fully Ground Drill Bit Set
In order to improve the cutting performance of twist drill, the cutting part can be ground into various shapes according to the properties of processed materials (such as group drill). Twist drill shank form has straight shank and cone shank two kinds, processing the former clip in the drill chuck, the latter inserted...
5PCS Drill Bits Set 6mm Metal Cobalt
The difference between drilling a wood bit and an iron bit: 1. Different materials: (1) drilling metal is generally black drill, drill material is generally high speed steel, in general metal materials (alloy steel, non-alloy steel, cast iron, cast steel, non-ferrous metals) drilling, with the use of metalworking...
Standard twist drill Angle Twist the basic Angle that twist drills includes vertex Angle, horizontal edge bevel Angle, before horn and hind horn 4 parts. 1. The apex Angle The Angle between two cutting edges of twist drill is called vertex Angle. Angle is generally 118°, drilling soft materials can be smaller,...
HSS Drill Bit Sets Twist Drill Bit Tool
1 pcs each size, different sizes of the most popular twist drill bits
Extremely high hardness, in the drilling work has excellent processing performance, all grinding sharp ligament sticky milling work hole smooth no burr;Sharp twisted drill bits will make the drilling easier and more effortless, extra long cutting...
5PC HSS Tin-Coated Step Drill Bit Set
Step drill bit is machined from high carbon steel with carbide tipped cutting edge.
For use on rotary and percussion drills.
For drilling in concrete, reinforced concrete, brick, block and masonry, etc.
Surface treatment are available: Galvanized finish, Nickel Plated, Chrome coated, Black finish, Sandblasted finish....
75PCS Screw Driver Bit Set Drill Bit set
Carbide bits are harder than HSS, the material they are made of is harder, and the price is higher, but they have the fatal disadvantage of being too hard, so they break easily. General tool steel also belongs to alloy steel, most of which are iron carbon alloy. High speed steel is also divided into ordinary high...
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