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 13
- Approved Vendor #23 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 8754 $4.27
- Drill America #23 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 8755 $1.38
- Drill America #23 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 8756 $0.74
- Approved Vendor #23 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 8757 $7.12
- Approved Vendor #23 HSS Left Hand Jobber Length Drill Bit SKU 8758 $3.58
- Approved Vendor #23 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 8759 $5.04
- Approved Vendor #23 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 8760 $1.38
- Approved Vendor #23 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 8761 $1.57
- Approved Vendor #23 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 8762 $1.13
- Approved Vendor #23 HSS Split Point Stub Drill Bit, D/AST Series SKU 8763 $1.38
- Approved Vendor #23 HSS Split Point Stub Drill Bit, DWDST Series SKU 8764 $1.14
- Approved Vendor #23 HSS Taper Length Drill Bit SKU 8766 $8.76
- Approved Vendor #23 Solid Carbide Drill Bit SKU 8767 $23.03
- Approved Vendor #23 Tin Coated Jobber Length Drill Bit SKU 8768 $4.85
- Drill America #23 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8770 $7.46
- Drill America #23 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8772 $2.77
- Approved Vendor #24 Carbide Tipped Jobber Length Drill Bit SKU 8773 $34.23
- Approved Vendor #24 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 8774 $2.87
- Drill America #24 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 8775 $2.07
- Approved Vendor #24 Cobalt Long Threaded Shank Drill Bit SKU 8776 $6.33
- Approved Vendor #24 Cobalt Short Threaded Shank Drill Bit SKU 8777 $4.67
- Approved Vendor #24 Cobalt Split Point Stub Drill Bit SKU 8778 $2.64
- Approved Vendor #24 Cobalt Stubby Threaded Shank Drill Bit SKU 8779 $6.62
- Approved Vendor #24 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 8780 $4.78
- Drill America #24 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 8781 $1.30
- Approved Vendor #24 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 8782 $3.11
- Approved Vendor #24 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 8783 $4.27
- Drill America #24 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 8784 $1.38
- Drill America #24 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 8785 $0.74
- Approved Vendor #24 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 8786 $7.12
- Approved Vendor #24 HSS Left Hand Jobber Length Drill Bit SKU 8787 $3.58
- Approved Vendor #24 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 8788 $5.04
- Approved Vendor #24 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 8789 $1.38
- Approved Vendor #24 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 8790 $1.57
- Approved Vendor #24 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 8791 $1.13
- Approved Vendor #24 HSS Split Point Stub Drill Bit, D/AST Series SKU 8792 $1.38
- Approved Vendor #24 HSS Split Point Stub Drill Bit, DWDST Series SKU 8793 $1.14
- Approved Vendor #24 HSS Taper Length Drill Bit SKU 8795 $8.76
- Approved Vendor #24 Solid Carbide Drill Bit SKU 8796 $21.81
- Approved Vendor #24 Tin Coated Jobber Length Drill Bit SKU 8797 $4.85
- Drill America #24 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8800 $7.46
- Drill America #24 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 8802 $2.77
- Approved Vendor #25 Carbide Tipped Jobber Length Drill Bit SKU 8803 $34.23
- Approved Vendor #25 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 8804 $2.59
- Drill America #25 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 8805 $1.89
- Approved Vendor #25 Cobalt Long Threaded Shank Drill Bit SKU 8806 $6.33
- Approved Vendor #25 Cobalt Short Threaded Shank Drill Bit SKU 8807 $5.65
- Approved Vendor #25 Cobalt Split Point Stub Drill Bit SKU 8808 $2.48