Hss Cobalt Drill Bit Set 1/8 in. x 6 in. Aircraft Extension Extra Long Deep Hole Drilling
Descriptions of HSS Drill Bits For Metal:
- Quality high speed steel ensures the bits super hard, sharp and cutting effectively with impressive cutting performance in metal, plastic, and wood etc with long tool life
- All drill dimensional & tolerances conform to ASME/ANSI B94.11M or USCTI - United States Cutting Tool Institute drill standards
- Fully ground process ensures excellent chips moving, and 135 deg chisel angle with split point provide accuracy start for quick penetration without Walking and less Logging
- Precision treatment makes drills durable toughness, withstands heavy duty operation, resists corrosion and lubricates the drill bits better for cutting smoothly
- Aircraft extension drill bits are used for drilling deep holes or drilling holes in the places hard to reach. 6 inch and 12 inch overall length bits are available
Specifications of HSS Drill Bits:
1. Material and Hardness of High Speed Steel:
| DESCRIPTION OF HSS | C | W | Mo | Cr | V | Co | Si | Mn | P | S |
| % | % | % | % | % | % | % | % | % | % | |
| W2MoCr4V(F4341) | 0.95-1.05 | 1.7-2.4 | 0.8-1.2 | 3.8-4.4 | 0.8-1.2 | 1.0-1.4 | 0.2-0.4 | <=0.03 | <=0.03 | |
| W4Mo3Cr4V(4341) | 0.88-0.98 | 3.5-4.5 | 2.5-3.5 | 3.8-4.4 | 1.2-1.8 | 0.5-1.2 | 0.2-0.4 | <=0.03 | <=0.03 | |
| W9Mo3Cr4V(9341) | 0.77-0.87 | 8.5-9.5 | 2.7-3.3 | 3.8-4.4 | 1.3-1.7 | - | 0.2-0.4 | 0.2-0.4 | <=0.03 | <=0.03 |
| W6Mo5Cr4V2(M2) | 0.8-0.9 | 5.5-6.75 | 4.5-5.5 | 3.8-4.4 | 1.75-2.2 | - | 0.2-0.4 | 0.2-0.4 | <=0.03 | <=0.03 |
| W6Mo5Cr4V2Co5(M35) | 0.9-0.95 | 5.5-6.5 | 4.5-5.5 | 3.8-4.4 | 1.75-2.2 | 4.5-5.5 | 0.2-0.4 | 0.2-0.4 | <=0.03 | <=0.03 |
| W2Mo9Cr4V2Co8(M42) | 1.05-1.15 | 1.15-1.85 | 9.0-10.0 | 3.5-4.25 | 0.95-1.25 | 7.75-8.75 | 0.15-0.65 | 0.15-0.4 | <=0.02 | <=0.025 |
Features of HSS Extra Long Drill Bits:
1.Extra Long Length
Ranging from 8" to 24" long, Extra Long Drill Bits are for applications where extra length is required for reach.
2.118 Degree Conventional Point
Standard 135 degree conventional point tip for designed to perform in a broad range of materials in the iron and steel families.
3.High Speed Steel Drills
High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance.
Application of Titanium Drill Bits:
Drilling holes on aluminium,plastic,wood,copper,iron,stainless steel.
Package of HSS Drill Bits for Steel:
1. Normal Package:5/10 pcs in a plastic bag,then inner box and out carton.
2. Other package:Blister card,Plastic tube,PVC pouch,according to your requirments.
3. HSS Drill bits set are available.
