HSS M42 (Co8%) Straight Shank Twist Drill Bits for Metal Stainless Steel Drilling, Stainless Steel and Harded Steel Din 338 HSS Twist Drill Bits, Roll Forged DIN338 Standard Bright and Black Steel HSS Straight Shank Drill Bit, Twist drill bit with universal standard geometry, roll forged bits For drilling, HSS DIN338 Drill Bits With Rolled & Polished, Roll Forged, Fully Ground, Reduced Shank, Milled Types DIN338 HSS Straight Shank Twist Drill Bits China Supplier Factory
HSS M42 (Co8%) Straight Shank Twist Drill Bits for Metal Stainless Steel Drilling Technical Specifications
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Material
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HSSM42, HSSM35, HSSM2(6542), HSS4341, HSS4241
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Process
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fully ground, edge ground/half ground, roll forged, milled
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Standard
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DIN338, DIN340, DIN1897, DIN1869
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Split Point
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118°and 135° tip both available
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Stamping
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laser marking and (letter) stamping.
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Shank
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Straight shank(Tri-Flats shank,Hex shank,Round shank,Morse taper shank)
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Available Packing
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single sleeve packing, sandwich packing, blister packing, square plastic
box packing( with hanger or without hanger), Bosch plastic box packing,
flat plastic box packing, 5/10 PVC bag packing, paper bag,
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Surface Color
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black flute & golden shank, black flute & white shank, bright finished,
black oxide,Tin-coated, amber(coffee) finished.
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Diameter Size
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0.5-20mm. 1/16″-1″, A-Z, 1# – 90#
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Total Length
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2.5-140mm
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Features
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1.HSS m42 drill bits are more expensive than other drill bits, but if you regularly drill through metal, they are a good investment since they tend to last longer.
2.No center punch is needed—the aggressive 135° Quick-Cut points are self-centering and penetrate quickly with less pressure. Will not “walk” or “wander”.
3.Precision ground point, flutes, body, clearance and drill diameter for the ultimate in accuracy and performance.
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HSS Twist Drill Bits
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| Manufacturing |
Surface Finish
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Sharpening
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White
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Black
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Black&White
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TIN Coated
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Amber
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Black&Gold
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118°
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135°
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| Roll Forged |
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√
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√
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√
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√
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| Rolled Polished |
√
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√
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√
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√
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√
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√
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√
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| Fully Ground |
√
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√
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√
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√
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√
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√
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√
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√
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| Milled |
√
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√
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√
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√
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√
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√
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| Standards |
DIN338, DIN340, DIN1897, DIN1869, DIN345, DIN341 |
| Jobber Length, Taper Length, Screw Machine Length, Aircraft Extension, Taper Shank(ANSI) |
| Material |
HSS4241, HSS4341, HSS9341, HSS6542(M2), HSS CO5%(M35), HSS CO8%(M42) |
| Shank |
Straight Shank, Taper Shank, Three Flats Shank, Hexagonal Shank, 1/2″ 3/8″ Reduced Shank |
| Helix Angle |
Type N, Type W, Type H |
| Rotating |
Right Hand, Left Hand |
| Flute |
Normal Parabolic |
HSS twist drill bit M42(8%Co) is the best drill bits in the word. It’s Rockwell hardness HRC65-67 degrees and must drilling metal <40 degrees, which is harder than M35 twist drill bits, more wear-resistant, smoother chip removal and more efficient.
The larger the diameter, the slower the required speed, generally suggestion 100-800R/MIN.For stainless steel, steel plate, cast iron, aluminum alloy drilling.
Notice: Don’t used to drill concrete, tile, wall, stone and other materials drilling. HSS twist drill bits are Used for 650W hand drill, table drill, milling machine.Lithium-ion drill has less power and is suitable for punching materials with low hardness. Punching more than 2mm add coolant to continue punching, is to extend the life of the drill bit.
Strong HSS Twist 8% Cobalt Metal M42 Stainless Steel Drill Bits
TiN (Titanium Nitride): Physical vapor deposition coating (2-4 microns). Benefits: (1) Surface hardness to HV 2300, (2) Significantly reduced friction, (3) Up to 5× longer life, (4) Higher heat resistance. Gold/bronze color is permanent (won’t fade unless worn). Premium option for production drilling.
High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance.
Precision ground point, flutes, body, clearance and drill diameter for the ultimate in accuracy and performance.
Ground flutes provide fast chip removal to maximize accuracy and efficiency along the full working surface of the bit
Twist drill with Morse taper shank suitable for a variety of materials and industrial applications. The tang at the end of the shank is used for ejecting the drill from the socket or sleeve. The drive and alignment is derived from the taper lock. Fully Groud Round Shank Black Oxide Coated M2 HSS 6542 Drill Bits
