Hss Drills
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 3 1 8 TAPER SHANK DRILL SKF BRAND 3125 5 MT HSS  US $719.99
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 Hercules 2 1 2” Dia Morse Taper 5 Shank HSS Drill US $550.00
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 new PTD 3 TS Taper Shank HSS 2FL Drill black Oxi 20300 US $529.09
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 BRAND NEW GUHRING TAPER SHANK DRILL 2 15 16 5MT HSS US $469.25
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 SKF DORMER 1 55 64 HSS Morse Taper Shank Drill A360 ENGLAND US $465.91
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 Precision Twist 115pc HSS Jobber Drill Set MSRP $799 US $461.99
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 new PTD 1 13 16 R40 HSS Screw Machine Length black oxide Twist Drill 40652 US $237.90
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 HSS Taper Shank Drills 3 1 16 5MT MT Puller 1 6 Set US $236.00
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 HSS Taper Shank Drills 305MT MoreNEW US $236.00
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 NEW POWER HOUSE 2 8 HSSH6 PLUGTAP DRILL 498806 US $202.02
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 New R STOCK AG 1” MT 3 Coolant Feeding HSS Drill US $200.00
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 2 5MT HSS Tapered Shank Drill Bit US $200.00
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 IT HSS PARALLEL SHANK TWIST DRILL LONG SERIES 1 11 16 US $199.99
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 PRECISION 113 Pc 1 16 1 2 A Z 1 60 HSS Drill Set 2K US $199.95
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 NEW 2 Annular Cutter Set of 6 for Magnetic Drill HSS US $199.00
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 new PTD 2 3 32 Taper Shank HSS 2FL Drill black 20206 US $197.98
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 Nachi 5 16 L6517U HSS Co 2Flute UG Power Drills US $196.19
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 PTD Precision Twist Drill 2 1 8 HSS Taper Shank Drill 20208 US $196.08
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![CHICAGO LATHROBE Screw Machine Length Drill 2 HSS Oxide 5 5 8 x 8 1 2 482]](http://www.osxmart.com/images/e/280832034416_0.jpg)
 Dong Woo Reamer Drill Blanks 01695 Wire 18 HSS R$243 US $182.52
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 NEW MORSE CO HSS CORE DRILL TAPER SHANK 4MT 150 US $179.99
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 NEW MELCUT CORE DRILL 1 7 32 MORSE TAPER 2 HSS LK US $179.99
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 1 17 32 5MT Taper Shank Drill HSS 9 3 8 Flute 16 3 8 OAL USA NEW CL4 US $179.95
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What is the difference between diamond drill bits, hss drill bits, cobalt drill bits, etc?
I went to a store looking for some basic twist drill bits (someone told me to get them), and there are all these types, and I'm totally confused now.
The material you use depends on the surface you are drilling. The price increases as the bits' material gets harder and more heat resistant.
The cheapest is Low Carbon Steel drill bits. Those are only for softwood, and they dull fast nevertheless. Slightly better option is High Carbon Steel. HSS, which stands for High Speed Steel drill bits are a significant improvement and can be used on hardwood and metals. They are the ones most commonly used in household projects.
Titanium Coated Drill Bits are more expensive and are significantly harder, since the coating is a hard ceramic material.
Then there are Carbide Tipped Drill Bits. These are extremely hard, and don’t heat as fast, but on the con side they are brittle and could chip.
Cobalt bits are most commonly used for stainless steel.
Diamond Drill Bits are in a league of their own. They contain diamond particles which makes them the hardest. Unlike other material, diamond drill bits grind as opposed to cutting through. They are used on glass, ceramics, stones, etc…
There are many charts online that outline material’s specifics. Here is one example: http://drill-bits.blogspot.com/2008/04/drill-bits-material-from-carbon-steel.html
Hope this helps.
Good luck.
OSG's Webcast: New Generation HSS Drills for All Purposes including SUS
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