Drill Bits
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Expected delivery: Wed, Nov 18
This section covers twist drill bits for metal, wood and plastic, along with step drills, masonry bits and drill bit sets. Lengths include stub (screw machine), jobber, taper and extra-long. Materials range from general-purpose high-speed steel (HSS) to cobalt for stainless and tough alloys and solid carbide for production machining. Sizes come in fractional, letter, number (wire gauge) and metric series, with black oxide, bright, gold oxide and titanium nitride finishes.
What to check before you order
- Workpiece material. HSS suits mild steel, aluminum and wood. Cobalt holds up in stainless. Carbide-tipped masonry bits are for concrete and block in a hammer drill.
- Point style. A 135 degree split point self-centers and cuts harder metals. A 118 degree point is common for general work.
- Length. Stub length bits are stiffer and wander less. Use jobber length for general work and taper or extra-long only when you need reach.
- Shank. Check the chuck. Reduced shank bits fit a 1/2" chuck on larger sizes, and SDS shanks fit rotary hammers.
- Tap drill sizes. Number and letter sizes exist mainly to drill tap holes. Keep a chart near the drill press.
Common questions
What is a jobber length drill bit?
It is the standard general-purpose length, long enough for most hand drill and drill press work while still fairly rigid.
Learn more in our drill bit materials guide, browse Alfa Tool bits, or see taps and dies and all cutting tools.
Drill Bits: page 14
- Approved Vendor #25 Cobalt Stubby Threaded Shank Drill Bit SKU 8809 $6.62
- Approved Vendor #25 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 8813 $4.17
- Drill America #25 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 8815 $0.72
- Approved Vendor #25 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 8819 $1.24
- Approved Vendor #25 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 8821 $1.09
- Approved Vendor #25 HSS Split Point Stub Drill Bit, D/AST Series SKU 8822 $1.24
- Approved Vendor #25 HSS Split Point Stub Drill Bit, DWDST Series SKU 8823 $1.04
- Approved Vendor #25 HSS Taper Length Drill Bit SKU 8825 $8.76
- Approved Vendor #25 Solid Carbide Drill Bit SKU 8826 $21.73
- Approved Vendor #25 Tin Coated Jobber Length Drill Bit SKU 8827 $4.76
- DeWalt #25 Wire Cobalt Jobber Length Drill SKU 115-DD4225B12 $2.44
- DeWalt #25 Wire Cobalt Screw Machine Length Drill SKU 115-DD4325B12 $2.24
- Approved Vendor #25 x 12" Cobalt Aircraft Extension Drill Bit SKU 8828 $12.47
- Drill America #25 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8829 $7.46
- Drill America #25 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8831 $2.77
- Approved Vendor #26 Carbide Tipped Jobber Length Drill Bit SKU 8832 $34.23
- Approved Vendor #26 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 8833 $2.57
- Drill America #26 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 8834 $1.88
- Approved Vendor #26 Cobalt Long Threaded Shank Drill Bit SKU 8835 $5.75
- Approved Vendor #26 Cobalt Split Point Stub Drill Bit SKU 8837 $2.48
- Approved Vendor #26 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 8839 $4.20
- Approved Vendor #26 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 8841 $3.03
- Drill America #26 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 8843 $1.24
- Drill America #26 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 8844 $0.72
- Approved Vendor #26 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 8845 $6.54
- Approved Vendor #26 HSS Left Hand Jobber Length Drill Bit SKU 8846 $3.45
- Approved Vendor #26 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 8847 $4.60
- Approved Vendor #26 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 8849 $1.42
- Approved Vendor #26 HSS Split Point Stub Drill Bit, D/AST Series SKU 8851 $1.24
- Approved Vendor #26 HSS Split Point Stub Drill Bit, DWDST Series SKU 8852 $1.04
- Approved Vendor #26 HSS Taper Length Drill Bit SKU 8854 $8.76
- Approved Vendor #26 Solid Carbide Drill Bit SKU 8855 $22.29
- Approved Vendor #26 Tin Coated Jobber Length Drill Bit SKU 8856 $4.76
- DeWalt #26 Wire Cobalt Jobber Length Drill SKU 115-DD4226B12 $2.44
- Drill America #26 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8858 $7.46
- Approved Vendor #27 Carbide Tipped Jobber Length Drill Bit SKU 8861 $34.23
- Approved Vendor #27 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 8862 $2.57
- Drill America #27 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 8863 $1.88
- Approved Vendor #27 Cobalt Long Threaded Shank Drill Bit SKU 8864 $4.07
- Approved Vendor #27 Cobalt Short Threaded Shank Drill Bit SKU 8865 $4.25
- Approved Vendor #27 Cobalt Split Point Stub Drill Bit SKU 8866 $2.48
- Approved Vendor #27 Cobalt Stubby Threaded Shank Drill Bit SKU 8867 $4.30
- Approved Vendor #27 Cobalt Very Stubby Threaded Shank Drill Bit SKU 8868 $4.57
- Approved Vendor #27 Extra Long Cobalt Threaded Shank Drill Bit SKU 8869 $5.36
- Approved Vendor #27 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 8870 $4.20
- Drill America #27 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 8871 $1.10
- Approved Vendor #27 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 8872 $3.03
- Approved Vendor #27 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 8873 $4.17