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 18
- Drill America #31 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 9112 $0.65
- Approved Vendor #31 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 9113 $5.27
- Approved Vendor #31 HSS Left Hand Jobber Length Drill Bit SKU 9114 $3.08
- Approved Vendor #31 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 9115 $3.61
- Approved Vendor #31 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 9116 $1.03
- Approved Vendor #31 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 9117 $1.20
- Approved Vendor #31 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 9118 $0.99
- Approved Vendor #31 HSS Split Point Stub Drill Bit, D/AST Series SKU 9119 $1.04
- Approved Vendor #31 HSS Split Point Stub Drill Bit, DWDST Series SKU 9120 $0.86
- Approved Vendor #31 HSS Taper Length Drill Bit SKU 9122 $8.59
- Approved Vendor #31 Solid Carbide Drill Bit SKU 9123 $19.03
- Approved Vendor #31 Tin Coated Jobber Length Drill Bit SKU 9124 $3.10
- Drill America #31 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9126 $7.46
- Drill America #31 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9128 $2.26
- Approved Vendor #32 Carbide Tipped Jobber Length Drill Bit SKU 9129 $33.60
- Approved Vendor #32 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 9130 $2.13
- Drill America #32 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 9131 $1.55
- Approved Vendor #32 Cobalt Long Threaded Shank Drill Bit SKU 9132 $5.48
- Approved Vendor #32 Cobalt Short Threaded Shank Drill Bit SKU 9133 $5.16
- Approved Vendor #32 Cobalt Split Point Stub Drill Bit SKU 9134 $2.11
- Approved Vendor #32 Cobalt Stubby Threaded Shank Drill Bit SKU 9135 $6.72
- Approved Vendor #32 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 9136 $3.50
- Drill America #32 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 9137 $0.99
- Approved Vendor #32 HSS Black Oxide 118° Standard Point Jobber Length Drill Bit SKU 9138 $2.46
- Approved Vendor #32 HSS Black Oxide 135° Split Point Jobber Length Drill Bit SKU 9139 $3.50
- Drill America #32 HSS Black Oxide Jobber Length Drill Bit, D/AN Series SKU 9140 $1.03
- Drill America #32 HSS Black Oxide Jobber Length Drill Bit, DWDN Series SKU 9141 $0.65
- Approved Vendor #32 HSS Cobalt 118° Standard Point Jobber Length Drill Bit SKU 9142 $5.19
- Approved Vendor #32 HSS Left Hand Jobber Length Drill Bit SKU 9143 $3.08
- Approved Vendor #32 HSS Polished 118° Standard Point Jobber Length Drill Bit SKU 9144 $3.61
- Approved Vendor #32 HSS Polished Jobber Length Drill Bit, D/AP Series SKU 9145 $1.03
- Approved Vendor #32 HSS Split Point Jobber Length Drill Bit, D/ASP Series SKU 9146 $1.20
- Approved Vendor #32 HSS Split Point Jobber Length Drill Bit, DWDSP Series SKU 9147 $0.99
- Approved Vendor #32 HSS Split Point Stub Drill Bit, D/AST Series SKU 9148 $1.00
- Approved Vendor #32 HSS Split Point Stub Drill Bit, DWDST Series SKU 9149 $0.83
- Approved Vendor #32 HSS Taper Length Drill Bit SKU 9151 $8.59
- Approved Vendor #32 Solid Carbide Drill Bit SKU 9152 $19.22
- Approved Vendor #32 Tin Coated Jobber Length Drill Bit SKU 9153 $3.10
- Drill America #32 x 12" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9156 $7.46
- Drill America #32 x 6" HSS Aircraft Extension Drill Bit, DWDA/C SKU 9158 $2.26
- Approved Vendor #33 Cobalt Jobber Length Drill Bit, D/ACO Series SKU 9159 $2.06
- Drill America #33 Cobalt Jobber Length Drill Bit, DWDCO Series SKU 9160 $1.49
- Approved Vendor #33 Cobalt Long Threaded Shank Drill Bit SKU 9161 $5.48
- Approved Vendor #33 Cobalt Short Threaded Shank Drill Bit SKU 9162 $5.55
- Approved Vendor #33 Cobalt Split Point Stub Drill Bit SKU 9163 $2.02
- Approved Vendor #33 Cobalt Stubby Threaded Shank Drill Bit SKU 9164 $6.26
- Approved Vendor #33 HSS Black & Gold 135° Split Point Jobber Length Drill Bit SKU 9165 $3.50
- Drill America #33 HSS Black & Gold KFD Split Point Jobber Length Drill Bit Killer Force Drill Bit SKU 9166 $0.99