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 27
- Approved Vendor #47 HSS Left Hand Jobber Length Drill Bit SKU 9773 $3.08
- Approved Vendor #47 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 9774 $3.82
- Approved Vendor #47 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 9775 $1.10
- Approved Vendor #47 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 9776 $1.20
- Approved Vendor #47 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 9777 $0.99
- Approved Vendor #47 HSS Split Point Stub Drill Bit, D/AST Series SKU 9778 $0.98
- Approved Vendor #47 HSS Split Point Stub Drill Bit, DWDST Series SKU 9779 $0.80
- Approved Vendor #47 HSS Taper Length Drill Bit SKU 9781 $4.74
- Approved Vendor #47 Solid Carbide Drill Bit SKU 9782 $14.72
- Drill America #47 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9784 $10.63
- Drill America #47 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9786 $3.30
- Approved Vendor #48 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 9787 $1.80
- Drill America #48 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 9788 $1.33
- Approved Vendor #48 Cobalt Long Threaded Shank Drill Bit SKU 9789 $5.08
- Approved Vendor #48 Cobalt Short Threaded Shank Drill Bit SKU 9790 $4.77
- Approved Vendor #48 Cobalt Split Point Stub Drill Bit SKU 9791 $1.89
- Approved Vendor #48 Cobalt Stubby Threaded Shank Drill Bit SKU 9792 $5.91
- Approved Vendor #48 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 9793 $3.40
- Drill America #48 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 9794 $0.96
- Approved Vendor #48 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 9795 $2.74
- Approved Vendor #48 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 9796 $3.50
- Drill America #48 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 9797 $1.10
- Drill America #48 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 9798 $0.74
- Approved Vendor #48 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 9799 $4.51
- Approved Vendor #48 HSS Left Hand Jobber Length Drill Bit SKU 9800 $3.08
- Approved Vendor #48 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 9801 $3.82
- Approved Vendor #48 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 9802 $1.10
- Approved Vendor #48 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 9803 $1.20
- Approved Vendor #48 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 9804 $0.99
- Approved Vendor #48 HSS Split Point Stub Drill Bit, D/AST Series SKU 9805 $0.98
- Approved Vendor #48 HSS Split Point Stub Drill Bit, DWDST Series SKU 9806 $0.80
- Approved Vendor #48 HSS Taper Length Drill Bit SKU 9808 $3.72
- Approved Vendor #48 Solid Carbide Drill Bit SKU 9809 $14.15
- Drill America #48 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9812 $10.63
- Drill America #48 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9814 $3.30
- Approved Vendor #49 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 9815 $1.80
- Drill America #49 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 9816 $1.33
- Approved Vendor #49 Cobalt Long Threaded Shank Drill Bit SKU 9817 $5.08
- Approved Vendor #49 Cobalt Short Threaded Shank Drill Bit SKU 9818 $5.34
- Approved Vendor #49 Cobalt Split Point Stub Drill Bit SKU 9819 $1.89
- Approved Vendor #49 Cobalt Stubby Threaded Shank Drill Bit SKU 9820 $5.91
- Approved Vendor #49 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 9821 $3.40
- Drill America #49 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 9822 $0.96
- Approved Vendor #49 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 9823 $2.74
- Approved Vendor #49 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 9824 $3.50
- Drill America #49 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 9825 $1.10
- Drill America #49 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 9826 $0.74
- Approved Vendor #49 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 9827 $4.51